Multifunctional river comprehensive analysis method, equipment, medium and product

Abstract

The invention relates to a multifunctional river comprehensive analysis method and device, a medium and a product, and the method comprises the steps: carrying out the river range extraction based on river thematic data, determining a river network, carrying out the submerged region recognition and historical flood mark extraction based on historical flood remote sensing data, and determining historical flood mark data; performing water level information extraction based on river thematic data, and determining a disaster forming water level and a historical highest flood level. Secondly, performing two-dimensional and three-dimensional integration on the basis of the river thematic data, the river network, the historical flood mark data, the disaster forming water level and the historical highest flood level to obtain a river display model; when a multifunctional river analysis instruction is detected, river comprehensive analysis is carried out based on the river display model and the multifunctional river analysis instruction, and a river comprehensive analysis result is obtained. The multi-dimensional river analysis method is provided in the river comprehensive analysis method, cross-domain and multi-scale comprehensive analysis is achieved, the integrity of the river analysis result is improved, and the dynamic nature of the river can be accurately reflected.

Description

Technical Field

[0001] The present application relates to the technical field of river ecological analysis, and in particular to a multifunctional river comprehensive analysis method, equipment, medium and product. Background Art

[0002] In the field of geography and hydrology, rivers are an important part of nature, and their state changes directly affect the surrounding ecological environment, human social and economic activities, and the occurrence and development of natural disasters. Traditional river analysis mainly relies on manual field surveys, historical literature review, and simple data analysis methods. These methods are not only time-consuming and laborious, but also difficult to fully and accurately reflect the complex dynamic changes of rivers.

[0003] In recent years, with the rapid development of modern information technologies such as remote sensing technology, geographic information systems, big data analysis, and artificial intelligence, new technical means and possibilities have been provided for river analysis. However, existing river analysis methods often focus on single-dimensional data collection and analysis, lacking cross-domain and multi-scale comprehensive analysis capabilities, resulting in incomplete and one-sided river analysis results, making it difficult to fully reflect the complexity and dynamics of rivers.

[0004] Therefore, how to solve the above technical defects is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] The purpose of this application is to provide a multifunctional river comprehensive analysis method, equipment, medium and product to solve at least one of the above technical problems.

[0006] The above invention objectives of the present application are achieved through the following technical solutions: In the first aspect, the present application provides a multifunctional river comprehensive analysis method, which adopts the following technical solutions: A versatile integrated river analysis approach that includes: Acquire river thematic data, extract river ranges based on the river thematic data, and determine a river network; Acquire historical flood remote sensing data, identify flooded areas and extract historical flood traces based on the historical flood remote sensing data, and determine historical flood trace data; Extract water level information based on the river thematic data to determine the disaster-causing water level and the highest historical flood level; Based on the river thematic data, the river network, the historical flood mark data, the disaster water level and the historical highest flood level, two-dimensional and three-dimensional integration is performed to obtain a river display model, wherein data of different dimensions are displayed in layers and classified in the river display model; When a multifunctional river analysis instruction is detected, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain a comprehensive river analysis result, wherein the multifunctional river analysis instruction includes: river flooding analysis instruction, river pollution source analysis instruction, historical evolution analysis instruction and land use structure analysis instruction.

[0007] By adopting the above technical scheme, the river range is extracted based on the river thematic data to determine the river network, and the flooded area is identified and the historical flood trace is extracted based on the historical flood remote sensing data to determine the historical flood trace data. At the same time, the water level information is extracted based on the river thematic data to determine the disaster water level and the historical highest flood level. Then, based on the river thematic data, river network, historical flood trace data, disaster water level and historical highest flood level, two-dimensional and three-dimensional integration is performed to obtain a river display model, in which data of different dimensions are displayed in layers and classified in the river display model. By switching or superimposing different layers, data and information of different dimensions can be intuitively displayed and analyzed. When the multifunctional river analysis instruction is detected, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the river comprehensive analysis results. In the river comprehensive analysis method, a multidimensional river analysis method corresponding to river flooding analysis, river pollution source analysis, historical evolution analysis and land use structure analysis is provided, which realizes a cross-domain and multi-scale comprehensive analysis, ensures that all important aspects of the river are fully considered and evaluated, and improves the integrity of the river analysis results, so as to accurately reflect the dynamics of the river.

[0008] In a preferred example, the present application may be further configured as follows: when the multifunctional river analysis instruction includes the river flooding analysis instruction, the river comprehensive analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the river comprehensive analysis result, including: Extracting a simulated water level based on the river flooding analysis instruction, performing a flood flooding simulation based on the simulated water level and the river display model, and determining a flood flooding range; Based on the flood inundation range and the river display model, loss calculation is performed to determine the inundation loss information, and the flood inundation range and the inundation loss information are integrated to obtain a comprehensive river analysis result.

[0009] In a preferred example, the present application may be further configured as follows: when the multifunctional river analysis instruction includes the river pollution source analysis instruction, the river comprehensive analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the river comprehensive analysis result, including: Extracting pollution source information based on the river pollution source analysis instruction, performing river pollution analysis based on the pollution source information and the river display model, and determining river pollution information; Perform pollution hazard calculation based on the river pollution information and the river display model to determine the pollution hazard information, and generate a pollution control instruction when the pollution hazard information reaches the pollution control standard; The river pollution information, the pollution hazard information and the pollution control instructions are integrated to obtain a comprehensive river analysis result.

[0010] In a preferred example, the present application may be further configured as follows: when the multifunctional river analysis instruction includes the historical evolution analysis instruction, the river comprehensive analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the river comprehensive analysis result, including: Extract multiple evolution nodes based on the historical evolution analysis instruction, slice the map based on each evolution node and the river display model, and obtain a slice map corresponding to each evolution node; Perform a dynamic carousel display based on each of the evolution nodes and the corresponding slice map to obtain a historical evolution effect diagram; A river condition analysis is performed based on the historical evolution renderings to determine the river evolution conditions, and a comprehensive river analysis result is obtained by combining the historical evolution renderings and the river evolution conditions.

[0011] In a preferred example, the present application may be further configured as follows: when the multifunctional river analysis instruction includes the land use structure analysis instruction, the river comprehensive analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the river comprehensive analysis result, including: Extracting the rivers to be analyzed based on the land use structure analysis instruction, dividing the range of the rivers to be analyzed, and determining the range of the control line; Based on the river display model and the range of the control line, classified area statistics are performed to determine land use data; Based on the land use data, a visual display is performed to obtain a land use structure chart, and the comprehensive analysis result of the river is obtained by integrating the scope of the control line, the land use data and the land use structure chart.

[0012] In a preferred example, the present application may be further configured as follows: after the two-dimensional and three-dimensional integration is performed based on the river thematic data, the river network, the historical flood mark data, the disaster water level and the historical highest flood level to obtain the river display model, the configuration further includes: When a feature extraction instruction carrying an area range is detected, feature screening is performed based on the feature extraction instruction and the river display model to determine river-related features corresponding to the area range, wherein the river-related features include at least one of: river range, historical flood marks, water conservancy facilities, river section, and flood level.

[0013] In a second aspect, the present application provides an electronic device, which adopts the following technical solution: at least one processor; Memory; At least one application, wherein the at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute the above-mentioned multifunctional river comprehensive analysis method.

[0014] In a third aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium stores a computer program, which, when executed in a computer, causes the computer to execute the multifunctional river comprehensive analysis method described above.

[0015] In a fourth aspect, the present application provides a computer program product, which adopts the following technical solution: A computer program product includes a computer program, and when the computer program is executed by a processor, the multifunctional river comprehensive analysis method is implemented.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: Based on the river thematic data, the river range is extracted to determine the river network, and based on the historical flood remote sensing data, the flooded area is identified and the historical flood trace is extracted to determine the historical flood trace data. At the same time, the water level information is extracted based on the river thematic data to determine the disaster water level and the highest historical flood level. Then, based on the river thematic data, river network, historical flood trace data, disaster water level and the highest historical flood level, two-dimensional and three-dimensional integration is performed to obtain a river display model, in which data of different dimensions are displayed in layers and classified. By switching or superimposing different layers, data and information of different dimensions can be intuitively displayed and analyzed. When the multifunctional river analysis instruction is detected, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the river comprehensive analysis results. In the river comprehensive analysis method, a multidimensional river analysis method corresponding to river flooding analysis, river pollution source analysis, historical evolution analysis and land use structure analysis is provided, realizing a cross-domain and multi-scale comprehensive analysis, ensuring that all important aspects of the river are fully considered and evaluated, and improving the integrity of the river analysis results, so as to accurately reflect the dynamics of the river.

[0017] Extract the simulated water level based on the river inundation analysis command, and perform flood inundation simulation based on the simulated water level and the river display model to determine the flood inundation range. Using the river display model to perform flood inundation simulation can more accurately and intuitively predict the flood inundation range. Then, based on the flood inundation range and the river display model, perform loss calculation to determine the inundation loss information, and combine the flood inundation range and inundation loss information to obtain the river comprehensive analysis results. Performing the loss calculation operation facilitates a more comprehensive understanding of the impact and consequences of flood disasters, and provides strong support for the formulation of effective flood control measures and emergency plans. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic flow chart of a multifunctional river comprehensive analysis method according to one embodiment of the present application; Figure 2 It is a structural schematic diagram of a multifunctional river comprehensive analysis device according to one embodiment of the present application; Figure 3 It is a structural schematic diagram of an electronic device according to one embodiment of the present application. DETAILED DESCRIPTION

[0019] The following combination Figures 1 to 3 This application is described in further detail.

[0020] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, a person skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by the patent law as long as they are within the scope of the present application.

[0021] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. It should be noted that in the optional embodiments of the present application, the object information and other related data involved, when the embodiments in the present application are applied to specific products or technologies, need to obtain the permission or consent of the object, and the collection, use and processing of the relevant data need to comply with the relevant laws, regulations and standards of the relevant countries and regions. In other words, if the data related to the object is involved in the embodiment of the present application, it needs to be obtained through the authorization and consent of the object, the authorization and consent of the relevant departments, and in accordance with the relevant laws, regulations and standards of the country and region. If personal information is involved in the embodiment, the acquisition of all personal information needs to obtain the consent of the individual. If sensitive information is involved, the separate consent of the information subject needs to be obtained, and the embodiment also needs to be implemented with the authorization and consent of the object.

[0022] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0023] The embodiments of the present application are further described in detail below in conjunction with the drawings in the specification.

[0024] The embodiment of the present application provides a multifunctional river comprehensive analysis method, which is executed by an electronic device, which can be a server or a terminal device, wherein the server can be an independent physical server, a server cluster or a distributed system composed of multiple physical servers, or a cloud server that provides cloud computing services. The terminal device can be a smart phone, a tablet computer, a laptop computer, a desktop computer, etc., but is not limited thereto. The terminal device and the server can be directly or indirectly connected via wired or wireless communication, and the embodiment of the present application does not limit this. Figure 1 As shown, the method includes step S101, step S102, step S103, step S104 and step S105, wherein: Step S101: Acquire river thematic data, extract river ranges based on the river thematic data, and determine the river network.

[0025] For the embodiment of the present application, the river thematic data can be obtained from an authoritative hydrological, geographical or environmental data source, providing detailed geographical information of the river and its surrounding environment, such as topography, landform, vegetation cover, etc., including but not limited to the following data of the river: geometric information, topography, hydrological characteristics, water quality information, land use, ecological environment and infrastructure, etc. Therefore, the river thematic data is spatially analyzed using geographic information system software, and the boundaries and ranges of the river are extracted according to factors such as topographic characteristics, water flow direction, and confluence capacity, and the extracted river range is accurately evaluated and corrected to ensure that it conforms to the actual situation. Furthermore, based on the extracted river range, the topological structure and network relationship of the river are further analyzed, that is, the layout and connection relationship of the river network are determined using a river network extraction algorithm, such as a geomorphological method based on contour lines and valley lines, a surface confluence method based on hydrological simulation, etc., to obtain a river network, wherein the river network includes but is not limited to: the direction, branches, and intersections of the river.

[0026] Step S102: Acquire historical flood remote sensing data, identify flooded areas and extract historical flood traces based on the historical flood remote sensing data, and determine historical flood trace data.

[0027] For the embodiment of the present application, historical flood data is crucial for assessing the flood risk and disaster impact of rivers. Through remote sensing data, it is possible to identify the flooded areas during historical floods and extract historical flood marks, which helps to understand the performance of rivers in different flood events. Therefore, the historical flood remote sensing data is obtained, and the historical flood remote sensing data can be obtained from remote sensing data platforms such as the Digital Earth Open Platform, the Resource and Environmental Science and Data Center of the Chinese Academy of Sciences, and the Geospatial Data Cloud. The remote sensing data provided by the above platforms can be of various types, such as visible light, infrared and microwave images, etc., which can meet the needs of flood monitoring. Then, calibration processing and image registration operations are performed based on the historical flood remote sensing data. The correction processing can eliminate the influence of factors such as atmospheric influence, terrain undulation and sensor error on the historical flood remote sensing data; the registration operation is used to register data obtained by different sensors at different times to ensure that they are in the same geographic coordinate system. Furthermore, image enhancement is performed on the historical flood remote sensing data after calibration processing and image registration operations to improve the readability and target recognition ability of the remote sensing image, and the differential image method is used to compare the image differences before and after the flood to identify the flooded area. At the same time, flood mark features related to historical floods, such as flood traces, flood water levels, etc., are identified in historical flood remote sensing data, and image processing software is used to extract data corresponding to the flood mark features and record them as historical flood mark data, where historical flood mark data include but are not limited to: flood events, locations, water level heights, etc.

[0028] Step S103: extracting water level information based on river thematic data to determine the disaster-causing water level and the highest historical flood level.

[0029] For the embodiments of the present application, water level information is one of the key factors in assessing river flood risks, and helps to understand the performance of rivers at different water levels. Therefore, statistical calculations are performed based on the disaster water levels of each year in the river-specific data to obtain the disaster water levels and the highest historical flood levels in the area, where the disaster water level refers to the water level that may cause catastrophic effects on the river's coastal areas when the water level reaches this standard.

[0030] Step S104: Based on the river thematic data, river network, historical flood mark data, disaster water level and historical highest flood level, two-dimensional and three-dimensional integration is performed to obtain a river display model, wherein data of different dimensions are displayed in layers and categories in the river display model.

[0031] For the embodiments of the present application, the river thematic data, river network, historical flood mark data, disaster water level and historical highest flood are integrated to form a unified data set to ensure the temporal and spatial consistency between different data, so as to facilitate subsequent analysis and display. Then, according to the nature of the data in the data set and the display requirements, the data is divided into different layers. For example, the river network is divided into one layer, the historical flood mark data is divided into another layer, and the disaster water level and historical highest flood level data are divided into independent layers. Furthermore, using geographic information system software, a two-dimensional river model is constructed based on the river thematic data and the river network data. In the two-dimensional river model, basic information such as the direction, branches, and intersections of the river are displayed. At the same time, based on three-dimensional terrain simulation technology, combined with river thematic data and river network data, a three-dimensional river model is constructed. In the three-dimensional river model, detailed information such as the river's terrain, landform, flow rate, and flow direction are displayed. Providing river models in two dimensions, two-dimensional and three-dimensional, helps to meet different display requirements. Then, using geographic information system software, the data of different layers are displayed in a graphical way, that is, different colors, symbols, lines, etc. are used to represent different data, and on the basis of the two-dimensional river model and the three-dimensional river model, the data of different dimensions are displayed in layers and classified to obtain a river display model, for example, the river network layer is displayed in the two-dimensional river model, and the river terrain, historical flood marks, disaster water level and historical highest flood level layers are displayed in the three-dimensional river model. By switching or superimposing different layers, data and information of different dimensions can be intuitively displayed and analyzed.

[0032] Step S105: When a multifunctional river analysis instruction is detected, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain a comprehensive river analysis result, wherein the multifunctional river analysis instruction includes: river flooding analysis instruction, river pollution source analysis instruction, historical evolution analysis instruction and land use structure analysis instruction.

[0033] For the embodiment of the present application, the river system has complex spatiotemporal characteristics, and the river analysis method of a single scale or a single dimension cannot realize cross-domain multifunctional analysis, resulting in incomplete and one-sided defects in the river analysis results. However, the multifunctional river comprehensive analysis method in the embodiment of the present application provides a multidimensional river analysis method corresponding to river inundation analysis, river pollution source analysis, historical evolution analysis and land use structure analysis, realizing cross-domain and multi-scale comprehensive analysis, ensuring that all important aspects of the river are fully considered and evaluated, and improving the integrity of the river analysis results so as to accurately reflect the dynamics of the river.

[0034] Therefore, when the multifunctional river analysis instruction is detected, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the comprehensive river analysis results, wherein the multifunctional river analysis instruction includes: river flooding analysis instruction, river pollution source analysis instruction, historical evolution analysis instruction and land use structure analysis instruction. For river flooding analysis, it is used to analyze the flooding of rivers under different water levels and flow conditions, which is helpful to assess flood risks, formulate flood prevention measures and plan river management; for river pollution source analysis, it is used to conduct multidimensional analysis based on pollution sources in rivers, which is helpful to understand the pollution status of rivers and formulate effective pollution control measures; for historical evolution analysis, it is used to study the changes in the morphology, flow, water quality and other characteristics of rivers over a period of time, which is helpful to reveal the laws and trends of river evolution and provide a scientific basis for river protection, management and planning; for land use structure analysis, it is used to analyze the types and distribution of land use along the river, which is helpful to formulate reasonable land use planning to protect the health and stability of river ecosystems.

[0035] It can be seen that in the embodiment of the present application, the river range is extracted based on the river thematic data to determine the river network, and the flooded area is identified and the historical flood mark is extracted based on the historical flood remote sensing data to determine the historical flood mark data. At the same time, the water level information is extracted based on the river thematic data to determine the disaster water level and the highest historical flood level. Then, two-dimensional and three-dimensional integration is performed based on the river thematic data, the river network, the historical flood mark data, the disaster water level and the highest historical flood level to obtain a river display model, and data of different dimensions are displayed in layers in the river display model. By switching or superimposing different layers, data and information of different dimensions can be intuitively displayed and analyzed. When a multifunctional river analysis instruction is detected, a river comprehensive analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain a river comprehensive analysis result. In the river comprehensive analysis method, a multidimensional river analysis method corresponding to river flooding analysis, river pollution source analysis, historical evolution analysis and land use structure analysis is provided, which realizes a cross-domain and multi-scale comprehensive analysis, ensures that all important aspects of the river are fully considered and evaluated, and improves the integrity of the river analysis results, so as to accurately reflect the dynamics of the river.

[0036] Furthermore, in order to more comprehensively understand the impact and consequences of flood disasters and provide strong support for the formulation of effective flood prevention measures and emergency plans, in the embodiment of the present application, when the multifunctional river analysis instruction includes a river inundation analysis instruction, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain a comprehensive river analysis result, including: Extract simulated water level based on river inundation analysis command, perform flood inundation simulation based on simulated water level and river display model, and determine flood inundation scope; The loss calculation is carried out based on the flood inundation range and river display model to determine the inundation loss information, and the flood inundation range and inundation loss information are integrated to obtain the comprehensive analysis results of the river.

[0037] For the embodiment of the present application, for river inundation analysis, it is used to analyze the inundation of rivers under different water levels and flow conditions, which is helpful to assess flood risks, formulate flood prevention measures and plan river management. Therefore, based on the river inundation analysis instruction, the simulated water level is extracted, and the simulated water level can be the water level height that needs to simulate the flood that is pre-input by the river supervisor through the display interface. Then, based on the simulated water level and the river display model, a flood inundation simulation is performed to determine the flood inundation range, that is, the flood inundation simulation is performed using the geographic information system software, the simulated water level and the river display model. During the simulation process, the geographic information system software should consider the flood inundation range caused by factors such as water flow direction, speed, and terrain undulations. According to the flood inundation simulation results, the flood inundation range is determined, and the flood inundation range includes: inundation area, inundation depth, etc. Using the river display model to perform flood inundation simulation can more accurately and intuitively predict the flood inundation range.

[0038] Then, based on the flood inundation range and river display model, the corresponding land type and property value of the inundated area are determined, and the loss calculation is performed based on the corresponding land type and property value of the inundated area to determine the inundation loss information, where the inundation loss information includes but is not limited to: loss type (for example, crop loss, house loss, risk of casualties, etc.), loss amount, etc. Different land types require different factors to be considered in the process of loss calculation. Users can select factors that affect loss calculation according to actual conditions. For example, for farmland, crop loss can be calculated based on inundation depth and duration; for residential areas, house loss and risk of casualties can be calculated based on inundation depth, house structure and population distribution. Finally, the comprehensive analysis results of the river are obtained by integrating the flood inundation range and inundation loss information. Performing loss calculation operations facilitates a more comprehensive understanding of the impact and consequences of flood disasters, and provides strong support for the formulation of effective flood control measures and emergency plans.

[0039] It can be seen that in the embodiment of the present application, the simulated water level is extracted based on the river flooding analysis instruction, and the flood flooding simulation is performed based on the simulated water level and the river display model to determine the flood flooding range. The flood flooding simulation using the river display model can more accurately and intuitively predict the flood flooding range. Then, based on the flood flooding range and the river display model, the loss calculation is performed to determine the flooding loss information, and the flood flooding range and flooding loss information are combined to obtain the river comprehensive analysis results. Executing the loss calculation operation facilitates a more comprehensive understanding of the impact and consequences of flood disasters, and provides strong support for the formulation of effective flood control measures and emergency plans.

[0040] Furthermore, in order to more accurately assess the severity and urgency of pollution, and to help quickly take control measures when pollution is serious, in the embodiment of the present application, when the multifunctional river analysis instruction includes a river pollution source analysis instruction, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain a comprehensive river analysis result, including: Extract pollution source information based on the river pollution source analysis instruction, perform river pollution analysis based on the pollution source information and the river display model, and determine the river pollution information; Calculate pollution hazards based on river pollution information and river display models, determine pollution hazard information, and generate pollution control instructions when the pollution hazard information reaches the pollution control standard; The river pollution information, pollution hazard information and pollution control instructions are integrated to obtain the comprehensive river analysis results.

[0041] For the embodiment of the present application, for the analysis of river pollution sources, it is used to conduct multidimensional analysis based on the pollution sources in the river, which is helpful to understand the pollution status of the river and formulate effective pollution control measures. Therefore, based on the river pollution source analysis instruction, the command analysis is performed to extract the pollution source information, wherein the pollution source information includes but is not limited to: the location of the pollution source, the emission, the type of pollutants and the concentration and other information. Then, the river pollution simulation is performed using the river display model and the input pollution source information. In the process of river pollution simulation, the influence of factors such as water flow direction, speed, terrain undulation, and pollutant diffusion on river pollution is considered. Furthermore, according to the simulation results of the river pollution simulation, the river pollution information is determined. The river pollution information includes but is not limited to: the distribution range, concentration, and exceeding of the pollutants. Preferably, the river pollution information is output in the form of a graphic so as to intuitively understand the distribution of river pollution. Performing river pollution analysis is convenient for providing river management personnel with more accurate and comprehensive data support.

[0042] Then, based on the distribution range of pollutants in the river pollution information and the river display model, the range is matched, and the land use and water source utilization corresponding to the polluted area are screened out in the river display model, where the land use includes: land use type (for example, agricultural land, forest land, construction land, etc.), area, distribution and other information; water source utilization includes: water source type (such as surface water, groundwater, etc.), water intake, water use method and other information. Then, based on the river pollution information, the land use and water source utilization corresponding to the polluted area are calculated to determine the pollution hazard information, where the pollution hazard information includes but is not limited to: the degree of harm to water resources (for example, the percentage of water quality decline, the amount of water reduction, etc.), the degree of harm to land resources (for example, the degree of soil pollution, the area of ​​land degradation, etc.). There are many ways to calculate pollution hazards, which are not limited in the embodiments of the present application. In one feasible method, appropriate evaluation indicators are selected according to the pollution type, land use type and water source utilization, and a pollution hazard assessment model is constructed based on the evaluation indicators. The pollution hazard assessment model can comprehensively consider factors such as the type and concentration of pollutants, the type of land use, and the mode of water source utilization, and calculate the degree of harm of pollution to water resources and land resources. Furthermore, the pollution hazard assessment model is used to calculate the pollution hazard based on the convection pollution information, land use and water source utilization, and determine the pollution hazard information. Performing the pollution hazard calculation operation quantifies the impact of pollution on the river ecosystem, more accurately assesses the severity and urgency of pollution, and helps river managers to quickly take control measures when pollution is serious.

[0043] After that, the electronic device pre-stores the pollution control standards, that is, it records the extent to which pollution of water resources and land resources requires pollution control. Therefore, based on the pollution hazard information and the pollution control standards, when the pollution hazard information reaches the pollution control standards, it indicates that the degree of pollution of land resources and water resources exceeds the allowable standards stipulated by the state or local government. Therefore, a pollution control instruction is generated. The pollution control instruction facilitates river management personnel to take timely control measures to reduce pollutant emissions, protect the ecological environment, and promote sustainable development. Finally, the river pollution information, pollution hazard information, and pollution control instructions are integrated to obtain the comprehensive analysis results of the river.

[0044] It can be seen that in the embodiment of the present application, pollution source information is extracted based on the river pollution source analysis instruction, and river pollution analysis is performed based on the pollution source information and the river display model to determine the river pollution information. Performing river pollution analysis is convenient for providing more accurate and comprehensive data support for river management personnel. Then, based on the river pollution information and the river display model, pollution hazard calculation is performed to determine the pollution hazard information. Performing the pollution hazard calculation operation quantifies the impact of pollution on the river ecosystem, more accurately assesses the severity and urgency of pollution, and helps river management personnel to quickly take control measures when pollution is serious. When the pollution hazard information reaches the pollution control standard, a pollution control instruction is generated. Finally, the river pollution information, pollution hazard information and pollution control instructions are integrated to obtain a comprehensive river analysis result.

[0045] Furthermore, in order to make the historical evolution process of the river intuitive and vivid, in the embodiment of the present application, when the multifunctional river analysis instruction includes the historical evolution analysis instruction, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the comprehensive river analysis results, including: Extract multiple evolution nodes based on historical evolution analysis instructions, slice the map based on each evolution node and river display model, and obtain the slice map corresponding to each evolution node; Based on each evolution node and the corresponding slice map, a dynamic carousel display is performed to obtain a historical evolution effect diagram; The river condition analysis is carried out based on the historical evolution renderings to determine the river evolution status, and the historical evolution renderings and river evolution status are combined to obtain the comprehensive river analysis results.

[0046] For the embodiment of the present application, for historical evolution analysis, it is used to study the changes in the morphology, flow, water quality and other characteristics of the river over a period of time in the past, which helps to reveal the laws and trends of river evolution and provide a scientific basis for the protection, management and planning of the river. The river manager will select or enter multiple evolution nodes on the display interface, that is, the evolution node is a certain time point at which the river status is expected to be displayed, and click to confirm to generate a historical evolution analysis instruction, which includes multiple evolution nodes. Therefore, when the electronic device receives the historical evolution analysis instruction, it performs instruction parsing based on the historical evolution analysis instruction and extracts multiple evolution nodes, and the evolution nodes can reflect the significant changes of the river in different historical periods. Furthermore, based on each evolution node and the river display model, the map is sliced ​​to obtain the slice map corresponding to each evolution node, that is, the river display model displays the river map of different time periods, and the slice map is used to characterize the land presentation of the river range at the time point of the evolution node.

[0047] Then, a dynamic display is performed based on each evolution node and the corresponding slice map to obtain a historical evolution effect diagram. The historical evolution effect diagram can automatically display the corresponding slice map in a carousel according to the time sequence of the evolution node, so that the historical evolution process of the river can be intuitively and vividly displayed. Visualization means help to better understand the evolution process and trend of the river. Then, using geographic information system software, the key parameters of the river, such as river width, water depth, flow rate, etc., are extracted from each slice map, and the river condition analysis is performed based on the key parameters corresponding to different evolution nodes, that is, the change trend of key parameters such as river width, water depth, and flow rate is analyzed. According to the change trend of river parameters, the river evolution status is determined. The corresponding relationship between the change trend of the river parameters and the river evolution status is pre-stored in the electronic device. For example, the increase in river width represents the strengthening of river erosion; the increase in water depth represents the strengthening of river sedimentation; the change in flow rate represents the change in river flow or the adjustment of the riverbed. By comparing the slice maps of different evolution nodes, the changes in river morphology, water level, water quality, etc. can be clearly observed, thereby providing a scientific basis for river management, protection and governance. Finally, the comprehensive analysis results of the river are obtained by combining the historical evolution effect diagram and the river evolution status.

[0048] It can be seen that in the embodiment of the present application, multiple evolution nodes are extracted based on the historical evolution analysis instruction, and the map is sliced ​​based on each evolution node and the river display model to obtain a slice map corresponding to each evolution node. Then, a carousel dynamic display is performed based on each evolution node and the corresponding slice map to obtain a historical evolution rendering. The historical evolution rendering allows the historical evolution process of the river to be displayed intuitively and vividly, and visualization methods help to better understand the evolution process and trend of the river. Furthermore, based on the historical evolution rendering, the river condition analysis is performed to determine the river evolution status. By comparing the slice maps of different evolution nodes, the changes in river morphology, water level, water quality, etc. can be clearly observed, thereby providing a scientific basis for river management, protection and governance. Finally, the historical evolution rendering and the river evolution status are combined to obtain a comprehensive analysis result of the river.

[0049] Furthermore, in order to comprehensively and accurately grasp the area of ​​different land use types around the river and provide a basis for the rational allocation of resources, in the embodiment of the present application, when the multifunctional river analysis instruction includes a land use structure analysis instruction, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain a comprehensive river analysis result, including: Extract the rivers to be analyzed based on the land use structure analysis command, divide the scope of the rivers to be analyzed, and determine the scope of the control line; Based on the river display model and the scope of the control line, the classified area statistics are carried out to determine the land use data; Based on the visualization of land use data, a land use structure chart is obtained, and the comprehensive analysis results of the river are obtained by combining the control line range, land use data and land use structure chart.

[0050] For the embodiment of the present application, for land use structure analysis, it is used to analyze the type and distribution of land use along the river, which helps to formulate a reasonable land use plan to protect the health and stability of the river ecosystem. Therefore, based on the land use structure analysis instruction, the river to be analyzed is extracted, and the identification information and analysis scope of the river are specified in the river to be analyzed. Then, the scope of the control line is determined based on the river to be analyzed, that is, the upstream and downstream boundaries, the left and right bank boundaries and the specific scope of the analysis area of ​​the river are determined first according to the identification information and analysis scope in the river to be analyzed, and on the basis of the specific scope, the geographical characteristics, hydrological conditions and land use of the river are combined to determine the scope of the control line. The control line is the plane contour line at the design flow after the river is regulated, which reflects the goal and direction of river regulation. Selecting the control line range as the object of land use structure analysis can more accurately evaluate the utilization status and potential of land resources around the river, and provide a scientific basis for optimizing the land use structure.

[0051] Then, based on the river display model and the scope of the control line, the scope is selected, and the spatial analysis function is used to classify the area statistics of the selected scope in the river display model to obtain the land area corresponding to each land use type, and the corresponding relationship between all land use types and land areas is integrated to determine the land use data. Performing classified area statistics helps to fully and accurately grasp the area of ​​different land use types around the river, providing a basis for the rational allocation of resources. After that, a visual display is performed based on the land use data to obtain a land use structure chart. The horizontal axis of the land use structure chart represents different land use types, and the vertical axis represents the land area. The visual display of the chart makes the land use data more intuitive and easy to understand. Finally, the comprehensive analysis results of the river are obtained by integrating the scope of the control line, land use data and land use structure chart.

[0052] It can be seen that in the embodiment of the present application, the river to be analyzed is extracted based on the land use structure analysis instruction, and the range is divided based on the river to be analyzed to determine the range of the control line. Then, classified area statistics are performed based on the river display model and the control line range to determine the land use data. Performing classified area statistics helps to fully and accurately grasp the area of ​​different land use types around the river, and provide a basis for the rational allocation of resources. Furthermore, a visual display is performed based on the land use data to obtain a land use structure chart. The visual display of the chart makes the land use data more intuitive and easy to understand, and the control line range, land use data and land use structure chart are integrated to obtain a comprehensive analysis result of the river.

[0053] Furthermore, in order to improve the convenience of operation and user experience, and enhance the user's sense of participation and satisfaction, in the embodiment of the present application, after the river display model is obtained by performing two-dimensional and three-dimensional integration based on river thematic data, river network, historical flood mark data, disaster water level and historical highest flood level, the following is also included: When a feature extraction instruction carrying a regional scope is detected, feature screening is performed based on the feature extraction instruction and the river display model to determine the river-related features corresponding to the regional scope, wherein the river-related features include at least one of: river scope, historical flood marks, water conservancy facilities, river section, and flood level.

[0054] For the embodiment of the present application, the river display model is used to comprehensively display the geographical, ecological, hydrological and other characteristics of the river. In the actual application process, the river manager may only be interested in the river characteristics in a specific river basin. Therefore, it is necessary to screen out the river characteristics of interest from a large number of river data to meet the specific needs of the river manager. Therefore, a user-interactive feature screening function is provided in the real-time example of the present application. The river manager can specify the area of ​​interest through a simple input class, and can quickly and accurately obtain the river-related characteristics within the area. The feature screening method improves the convenience of operation and user experience, and customized demand screening enhances the user's sense of participation and satisfaction.

[0055] Specifically, river managers can select or input the regional scope and required river features in the display interface, and click to confirm to generate a feature extraction instruction with the regional scope. Therefore, when a feature extraction instruction with the regional scope is detected, the corresponding target area is located in the river display model according to the regional scope in the feature extraction instruction, and the target area in the river display model is subjected to feature query screening according to the required river features in the feature extraction instruction to determine the river-related features corresponding to the regional scope, wherein the river-related features include at least one of the river scope, historical flood marks, water conservancy facilities, river section, and flood level. Finally, the extracted river-related features are formatted, converted, and aggregated to ensure that the output results meet the expectations and requirements of river managers.

[0056] It can be seen that in the embodiment of the present application, when a feature extraction instruction carrying a regional range is detected, feature screening is performed based on the feature extraction instruction and the river display model to determine the river-related features corresponding to the regional range. By simply inputting a class to specify the regional range of interest, the river-related features within the regional range can be quickly and accurately obtained. This feature screening method improves the convenience of operation and user experience, and customized demand screening enhances user participation and satisfaction.

[0057] The above-mentioned embodiment introduces a multifunctional river comprehensive analysis method from the perspective of method flow, and the following embodiment introduces a multifunctional river comprehensive analysis device from the perspective of virtual module or virtual unit. Please refer to the following embodiment for details.

[0058] The present application embodiment provides a multifunctional river comprehensive analysis device, such as Figure 2 As shown, the multifunctional river comprehensive analysis device may specifically include: A river range extraction module 210 is used to obtain river thematic data, extract river ranges based on the river thematic data, and determine a river network; The flood mark extraction module 220 is used to obtain historical flood remote sensing data, identify the flooded area and extract historical flood marks based on the historical flood remote sensing data, and determine the historical flood mark data; The water level information extraction module 230 is used to extract water level information based on river thematic data to determine the disaster-causing water level and the highest historical flood level; A two-dimensional and three-dimensional integration module 240 is used to perform two-dimensional and three-dimensional integration based on river thematic data, river network, historical flood trace data, disaster water level and historical highest flood level to obtain a river display model, wherein data of different dimensions are displayed in layers and categories in the river display model; The river comprehensive analysis module 250 is used to perform a river comprehensive analysis based on the river display model and the multifunctional river analysis instruction to obtain a river comprehensive analysis result when a multifunctional river analysis instruction is detected, wherein the multifunctional river analysis instruction includes: river flooding analysis instruction, river pollution source analysis instruction, historical evolution analysis instruction and land use structure analysis instruction.

[0059] For the embodiment of the present application, the river range is extracted based on the river thematic data to determine the river network, and the flooded area is identified and the historical flood trace is extracted based on the historical flood remote sensing data to determine the historical flood trace data. At the same time, the water level information is extracted based on the river thematic data to determine the disaster water level and the highest historical flood level. Then, two-dimensional and three-dimensional integration is performed based on the river thematic data, the river network, the historical flood trace data, the disaster water level and the highest historical flood level to obtain a river display model, in which data of different dimensions are displayed in layers and classified in the river display model. By switching or superimposing different layers, data and information of different dimensions can be intuitively displayed and analyzed. When a multifunctional river analysis instruction is detected, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain a comprehensive river analysis result. In the comprehensive river analysis method, a multidimensional river analysis method corresponding to river flooding analysis, river pollution source analysis, historical evolution analysis and land use structure analysis is provided, which realizes a cross-domain and multi-scale comprehensive analysis, ensures that all important aspects of the river are fully considered and evaluated, and improves the integrity of the river analysis results, so as to accurately reflect the dynamic nature of the river.

[0060] In a possible implementation of the embodiment of the present application, when the multifunctional river analysis instruction includes a river flooding analysis instruction, the river comprehensive analysis module 250 performs a river comprehensive analysis based on the river display model and the multifunctional river analysis instruction to obtain a river comprehensive analysis result, and is used to: Extract simulated water level based on river inundation analysis command, perform flood inundation simulation based on simulated water level and river display model, and determine flood inundation scope; The loss calculation is carried out based on the flood inundation range and river display model to determine the inundation loss information, and the flood inundation range and inundation loss information are integrated to obtain the comprehensive analysis results of the river.

[0061] In a possible implementation of the embodiment of the present application, when the multifunctional river analysis instruction includes a river pollution source analysis instruction, the river comprehensive analysis module 250 performs a river comprehensive analysis based on the river display model and the multifunctional river analysis instruction to obtain a river comprehensive analysis result, and is used to: Extract pollution source information based on the river pollution source analysis instruction, perform river pollution analysis based on the pollution source information and the river display model, and determine the river pollution information; Calculate pollution hazards based on river pollution information and river display models, determine pollution hazard information, and generate pollution control instructions when the pollution hazard information reaches the pollution control standard; The river pollution information, pollution hazard information and pollution control instructions are integrated to obtain the comprehensive river analysis results.

[0062] In a possible implementation of the embodiment of the present application, when the multifunctional river analysis instruction includes a historical evolution analysis instruction, the river comprehensive analysis module 250 performs a river comprehensive analysis based on the river display model and the multifunctional river analysis instruction to obtain a river comprehensive analysis result, and is used to: Extract multiple evolution nodes based on historical evolution analysis instructions, slice the map based on each evolution node and river display model, and obtain the slice map corresponding to each evolution node; Based on each evolution node and the corresponding slice map, a dynamic carousel display is performed to obtain a historical evolution effect diagram; The river condition analysis is carried out based on the historical evolution renderings to determine the river evolution status, and the historical evolution renderings and river evolution status are combined to obtain the comprehensive river analysis results.

[0063] In a possible implementation of the embodiment of the present application, when the multifunctional river analysis instruction includes a land use structure analysis instruction, the river comprehensive analysis module 250 performs a river comprehensive analysis based on the river display model and the multifunctional river analysis instruction to obtain a river comprehensive analysis result, and is used to: Extract the rivers to be analyzed based on the land use structure analysis command, divide the scope of the rivers to be analyzed, and determine the scope of the control line; Based on the river display model and the scope of the control line, the classified area statistics are carried out to determine the land use data; Based on the visualization of land use data, a land use structure chart is obtained, and the comprehensive analysis results of the river are obtained by combining the control line range, land use data and land use structure chart.

[0064] A possible implementation of the embodiment of the present application is a multifunctional river comprehensive analysis device, which further includes: The feature screening module is used to perform feature screening based on the feature extraction instruction and the river display model when a feature extraction instruction carrying an area range is detected, and determine the river-related features corresponding to the area range, wherein the river-related features include: river range, historical flood marks, water conservancy facilities, river section, and at least one of flood levels.

[0065] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the multifunctional river comprehensive analysis device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0066] An electronic device is provided in an embodiment of the present application, such as Figure 3 As shown, Figure 3The electronic device 300 shown includes: a processor 301 and a memory 303. The processor 301 and the memory 303 are connected, such as through a bus 302. Optionally, the electronic device 300 may also include a transceiver 304. It should be noted that in actual applications, the transceiver 304 is not limited to one, and the structure of the electronic device 300 does not constitute a limitation on the embodiments of the present application.

[0067] The processor 301 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor 301 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0068] The bus 302 may include a path to transmit information between the above components. The bus 302 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 302 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 3 Only one thick line is used in the diagram, but it does not mean that there is only one bus or only one type of bus.

[0069] The memory 303 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0070] The memory 303 is used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 301. The processor 301 is used to execute the application code stored in the memory 303 to implement the contents shown in the above method embodiment.

[0071] The electronic devices include, but are not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), and fixed terminals such as digital TVs, desktop computers, etc. It can also be a server, etc. Figure 3 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0072] An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer-readable storage medium is run on a computer, the computer can execute the corresponding content in the aforementioned method embodiment.

[0073] The embodiment of the present application provides a computer program product, which includes a computer program, which implements the method in any of the above embodiments when executed by a processor. Compared with the related art, the embodiment of the present application extracts the river range based on the river thematic data, determines the river network, and identifies the submerged area and extracts the historical flood marks based on the historical flood remote sensing data to determine the historical flood mark data. At the same time, the water level information is extracted based on the river thematic data to determine the disaster water level and the historical highest flood level. Then, two-dimensional and three-dimensional integration is performed based on the river thematic data, the river network, the historical flood mark data, the disaster water level and the historical highest flood level to obtain a river display model, and data of different dimensions in the river display model are displayed in layers and classified. By switching or superimposing different layers, data and information of different dimensions can be intuitively displayed and analyzed. When a multifunctional river analysis instruction is detected, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain a comprehensive river analysis result. The comprehensive river analysis method provides multidimensional river analysis methods corresponding to river inundation analysis, river pollution source analysis, historical evolution analysis and land use structure analysis, realizing cross-domain and multi-scale comprehensive analysis, ensuring that all important aspects of the river are fully considered and evaluated, and improving the integrity of the river analysis results so as to accurately reflect the dynamics of the river.

[0074] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0075] The above are only some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A multifunctional comprehensive river analysis method, characterized in that: include: Acquire river thematic data, extract river ranges based on the river thematic data, and determine a river network; Acquire historical flood remote sensing data, identify flooded areas and extract historical flood traces based on the historical flood remote sensing data, and determine historical flood trace data; Extract water level information based on the river thematic data to determine the disaster-causing water level and the highest historical flood level; Based on the river thematic data, the river network, the historical flood mark data, the disaster water level and the historical highest flood level, two-dimensional and three-dimensional integration is performed to obtain a river display model, wherein data of different dimensions are displayed in layers and classified in the river display model; When a multifunctional river analysis instruction is detected, a comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain a comprehensive river analysis result, wherein the multifunctional river analysis instruction includes: river flooding analysis instruction, river pollution source analysis instruction, historical evolution analysis instruction and land use structure analysis instruction.

2. The multifunctional river comprehensive analysis method according to claim 1 is characterized in that: When the multifunctional river analysis instruction includes the river flooding analysis instruction, the comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the comprehensive river analysis result, including: Extracting a simulated water level based on the river flooding analysis instruction, performing a flood flooding simulation based on the simulated water level and the river display model, and determining a flood flooding range; Based on the flood inundation range and the river display model, loss calculation is performed to determine the inundation loss information, and the flood inundation range and the inundation loss information are integrated to obtain a comprehensive river analysis result.

3. The multifunctional river comprehensive analysis method according to claim 1 is characterized in that: When the multifunctional river analysis instruction includes the river pollution source analysis instruction, the comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the comprehensive river analysis result, including: Extracting pollution source information based on the river pollution source analysis instruction, performing river pollution analysis based on the pollution source information and the river display model, and determining river pollution information; Perform pollution hazard calculation based on the river pollution information and the river display model to determine the pollution hazard information, and generate a pollution control instruction when the pollution hazard information reaches the pollution control standard; The river pollution information, the pollution hazard information and the pollution control instructions are integrated to obtain a comprehensive river analysis result.

4. The multifunctional river comprehensive analysis method according to claim 1 is characterized in that: When the multifunctional river analysis instruction includes the historical evolution analysis instruction, the comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the comprehensive river analysis result, including: Extract multiple evolution nodes based on the historical evolution analysis instruction, slice the map based on each evolution node and the river display model, and obtain a slice map corresponding to each evolution node; Perform a dynamic carousel display based on each of the evolution nodes and the corresponding slice map to obtain a historical evolution effect diagram; A river condition analysis is performed based on the historical evolution renderings to determine the river evolution conditions, and a comprehensive river analysis result is obtained by combining the historical evolution renderings and the river evolution conditions.

5. The multifunctional river comprehensive analysis method according to claim 1 is characterized in that: When the multifunctional river analysis instruction includes the land use structure analysis instruction, the comprehensive river analysis is performed based on the river display model and the multifunctional river analysis instruction to obtain the comprehensive river analysis result, including: Extracting the rivers to be analyzed based on the land use structure analysis instruction, dividing the range of the rivers to be analyzed, and determining the range of the control line; Based on the river display model and the range of the control line, classified area statistics are performed to determine land use data; Based on the land use data, a visual display is performed to obtain a land use structure chart, and the comprehensive analysis result of the river is obtained by integrating the scope of the control line, the land use data and the land use structure chart.

6. The multifunctional river comprehensive analysis method according to claim 1 is characterized in that: After the two-dimensional and three-dimensional integration is performed based on the river thematic data, the river network, the historical flood trace data, the disaster water level and the historical highest flood level to obtain the river display model, the method further includes: When a feature extraction instruction carrying an area range is detected, feature screening is performed based on the feature extraction instruction and the river display model to determine river-related features corresponding to the area range, wherein the river-related features include at least one of: river range, historical flood marks, water conservancy facilities, river section, and flood level.

7. An electronic device, characterized in that: include: at least one processor; Memory; At least one application, wherein the at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute the multifunctional river comprehensive analysis method as described in any one of claims 1 to 6.

8. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed in a computer, the computer is caused to execute the multifunctional river comprehensive analysis method as described in any one of claims 1 to 6.

9. A computer program product, characterized in that It comprises a computer program, wherein the computer program is executed by a processor to implement the multifunctional river comprehensive analysis method as described in any one of claims 1 to 6.

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