Urban waterlogging disaster emergency service demand evaluation method and system coupled with ecology-economy-society
Patent Information
- Application Number
- CN202611035180.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-13
- Publication Date
- 2026-11-03
AI Technical Summary
Existing emergency service demand assessment technologies typically approach the issue from a single dimension, neglecting ecological and economic needs, leading to resource misallocation and risk misjudgment.
A multi-dimensional assessment method is adopted, combining emergency service needs in ecological environment, economy and society dimensions. Through the acquisition, calculation and comprehensive evaluation of multi-source basic data, the level of comprehensive emergency service needs is determined.
It enables more accurate and comprehensive assessment of emergency service needs, avoids resource misallocation, improves the efficiency and accuracy of emergency response, and enhances preparedness for handling secondary economic and environmental risks.
Smart Images
Figure CN123032031A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of data processing and early warning technology, and in particular to a method and system for assessing emergency service needs for urban flooding disasters that couples ecology, economy, and society. Background Technology
[0002] Precise emergency response to urban flooding disasters relies heavily on rapid and accurate assessment of emergency service needs. Current emergency service demand assessment techniques typically focus on single physical or social indicators, using metrics such as floodwater depth and population statistics in affected areas as the primary basis for initiating response and allocating resources. However, they neglect the economic dimension of emergency service needs arising from flooding's impact on urban infrastructure, buildings, and other fixed assets, as well as the ecological dimension of emergency needs caused by sewage overflows, water pollution, and green space destruction. This leads to insufficient preparedness for handling secondary economic and environmental risks. Single-dimensional emergency service demand assessment methods are prone to misallocation of emergency resources and misjudgment or delay in assessing risk levels.
[0003] Therefore, there is an urgent need to establish a systematic, integrated, multi-dimensional assessment method that combines physical inundation with ecological, economic, and social impacts to improve the efficiency and accuracy of emergency services. Summary of the Invention
[0004] Based on the above analysis, the embodiments of the present invention aim to provide a method and system for assessing the emergency service needs of urban flooding disasters that couples the ecological, economic and social dimensions, in order to solve the problem that existing emergency service needs assessment technologies only approach the issue from a single dimension and ignore the needs of the ecological and economic dimensions, leading to resource misallocation and risk misjudgment.
[0005] On one hand, this invention discloses a method for assessing emergency service needs for urban flooding disasters that couples ecology, economy, and society, the method comprising: Acquire multi-source basic data on flooding disasters within the target city area; Based on multi-source basic data on regional flooding in the target city, an emergency service demand sequence was obtained in the ecological, economic, and social dimensions. Based on the emergency service demand sequences of the ecological environment, economic, and social dimensions, the emergency service demand levels of the ecological environment, economic, and social dimensions are determined respectively; by coupling the emergency service demand levels of the ecological environment, economic, and social dimensions, the comprehensive emergency service demand level of urban flooding disaster is obtained.
[0006] Based on the above solution, the present invention also makes the following improvements: Furthermore, the multi-source basic data includes primary indicators of waterlogging, indicators of ecosystem service damage, indicators of pollutant concentration, indicators of land value, and indicators of population density.
[0007] Furthermore, the obtained emergency service demand sequence across ecological, economic, and social dimensions is then executed as follows: Based on the primary indicators of urban flooding, the indicators of ecosystem service damage, and the indicators of pollutant concentration in the target urban area, a sequence of emergency service needs in the ecological and environmental dimension is obtained. Based on the primary indicators of urban flooding and land value in the target urban area, an emergency service demand sequence in the economic dimension is obtained; Based on the primary indicators of urban flooding and population density in the target urban area, a sequence of emergency service needs in the social dimension is obtained.
[0008] Furthermore, the obtained emergency service demand sequence in the ecological environment dimension is then executed as follows: Based on the primary indicators of urban flooding, ecosystem service damage, and pollutant concentration in the target urban area, the pollution loss and ecosystem service loss of each grid unit are calculated; based on the pollution loss and ecosystem service loss of each grid unit, the ecological environment loss of the corresponding grid unit is obtained. The ecological and environmental losses of all grid units are sorted to obtain a sequence of emergency service needs in the ecological and environmental dimension.
[0009] Furthermore, grid cells pollution losses Represented as: (1) in, Represents grid cells pollutants The average concentration of events, Indicates pollutants Permissible emission concentrations; Indicates the total number of types of pollutants; Represents grid cells The amount of water accumulated in the urban area, , , Representing grid cells respectively The extent and depth of flooding; This indicates the density of water. This indicates the price of ecological water required to dispose of pollutants; Grid cells ecosystem service loss Represented as: (2) in, , Representing grid cells respectively Carbon fixation loss parameters and oxygen release loss parameters; Indicates the carbon content in CO2. , These represent the carbon fixation loss conversion coefficient and the oxygen release loss conversion coefficient, respectively. Grid cells ecological and environmental losses Represented as: (3).
[0010] Furthermore, the obtained emergency service demand sequence in the economic dimension is then executed as follows: Based on the inundation depth and land use price of each grid cell in the target urban area, the economic loss of the corresponding grid cell is obtained; The economic losses of all grid units are sorted to obtain a sequence of emergency service needs in the economic dimension.
[0011] Furthermore, the obtained emergency service demand sequence from the social dimension is then executed as follows: The social loss of each grid cell is obtained based on the inundation depth and population of each grid cell in the target urban area. The social losses of all grid units are sorted to obtain a sequence of emergency service needs in the social dimension.
[0012] Furthermore, the determination of emergency service demand levels across ecological, economic, and social dimensions is followed by the execution of: The natural breakpoint method was used to process the emergency service demand sequences in the ecological environment, economic, and social dimensions, and the thresholds for classifying the emergency service demand levels in these dimensions were determined. By using the threshold values for classifying emergency service demand levels in the ecological environment, economic, and social dimensions, the emergency service demand level corresponding to each grid unit in the emergency service demand sequence in the ecological environment, economic, and social dimensions is determined. The highest level of emergency service demand in each grid unit of the emergency service demand sequence in the ecological environment, economic, and social dimensions is taken as the emergency service demand level in the ecological environment, economic, and social dimensions, respectively.
[0013] Furthermore, the comprehensive emergency service demand level for urban flooding disasters is obtained, and the following measures are implemented: A comprehensive assessment of the emergency service demand levels across ecological, economic, and social dimensions is conducted to determine the comprehensive emergency service demand level for urban flooding disasters.
[0014] On the other hand, the present invention also provides an urban flooding disaster emergency service demand assessment system that couples ecology, economy, and society, the system comprising: The multi-source basic data acquisition module is used to acquire multi-source basic data on flooding disasters within the target city area; The multidimensional emergency service demand sequence calculation module is used to obtain emergency service demand sequences in ecological environment, economic dimension and social dimension based on multi-source basic data of flood disaster in the target city area; The comprehensive emergency service demand level assessment module is used to determine the emergency service demand levels for the ecological environment, economic, and social dimensions based on the emergency service demand sequence. By coupling the emergency service demand levels for the ecological environment, economic, and social dimensions, the comprehensive emergency service demand level for urban flooding disasters is obtained.
[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: This invention provides a method and system for assessing emergency service needs for urban flooding disasters that integrates ecological, economic, and social dimensions. By integrating these three dimensions, it overcomes the limitations of traditional single-dimensional assessments. In the ecological dimension, it not only considers the direct pollutant diffusion losses caused by flooding but also innovatively introduces assessments of ecosystem service functions such as carbon sequestration and oxygen release, making the assessment of ecological and environmental impacts more comprehensive and in-depth. The economic dimension, based on the correlation analysis between land use prices and inundation depth, accurately reflects the differences in economic losses caused by flooding in different regions. The social dimension focuses on the coupling effect between population size and inundation depth, highlighting the concern for human safety. The system uses the natural discontinuity method to classify the emergency service demand sequence of each dimension into levels, and uses the highest level of each dimension as the demand level for that dimension, ultimately coupling them to form a comprehensive emergency service demand level. This process achieves effective fusion and scientific analysis of multi-source data. This method and system can provide more accurate and comprehensive decision support for emergency response to urban flooding disasters, help avoid the misallocation of emergency resources, improve the preparedness for handling secondary economic and environmental risks, thereby improving the efficiency and accuracy of overall emergency services, and providing strong technical support for the scientific response and risk management of urban flooding disasters.
[0016] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description
[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. Figure 1 A flowchart of the urban flooding disaster emergency service demand assessment method coupled with ecological, economic, and social factors provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the urban flooding disaster emergency service demand assessment system coupled with ecology, economy and society provided in Embodiment 2 of the present invention. Detailed Implementation
[0018] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.
[0019] Specific embodiment 1 of the present invention discloses a method for assessing emergency service needs for urban flooding disasters that couples ecology, economy, and society. The flowchart of the method is as follows: Figure 1 As shown, the specific implementation process is explained below.
[0020] Step S1: Obtain multi-source basic data on flooding disasters within the target city area.
[0021] In this embodiment, the multi-source basic data includes primary indicators of waterlogging, indicators of ecosystem service damage, indicators of pollutant concentration, indicators of land value, and indicators of population density.
[0022] (1) Primary indicators of waterlogging Primary indicators of urban flooding include the inundation range, inundation depth, and inundation time of each grid unit in the target urban area.
[0023] In the specific implementation process, the aforementioned primary indicators of urban flooding can be obtained based on the simulation results of urban hydrodynamic models. For example, by collecting urban land use data, high-precision digital elevation model (DEM) data, underground pipe network and manhole vector data, and relying on hydrological and hydrodynamic models such as the InfoWorks ICM platform, an urban flooding simulation model integrating one-dimensional pipe network and two-dimensional surface runoff can be constructed. Then, by inputting rainfall duration and rainfall amount at different return periods, the flooding process caused by rainfall at each return period can be simulated, and the simulation results can be output in a gridded form to obtain vector data of the inundation range, inundation depth and inundation time of each grid cell.
[0024] In this embodiment, the grid cell The inundation range, inundation depth, and inundation time are respectively expressed as: , , .
[0025] (2) Ecosystem service damage indicators Ecosystem service damage indicators include carbon fixation loss parameters and oxygen release loss parameters for each grid unit in the target urban area. These parameters can be obtained from literature or experiments; specific methods for measuring carbon fixation and oxygen release functions should be consulted.
[0026] In this embodiment, the grid cell The carbon fixation loss parameters and oxygen release loss parameters are expressed as follows: , .
[0027] (3) Pollutant concentration indicators The pollutant concentration indicators include the event-averaged concentration of each pollutant in each grid cell of the target urban area, and the permissible emission concentration of each pollutant in the target urban area.
[0028] In this embodiment, the grid cell pollutants The event average concentration (EMC) is expressed as pollutants The permissible emission concentration is expressed as .
[0029] (4) Land value indicators The land value index includes the land use price of each grid unit in the target urban area.
[0030] In this embodiment, the grid cell Land use price expressed as .
[0031] (5) Population density index The population density index includes the number of people in each grid cell within the target urban area.
[0032] In this embodiment, the grid cell The population size is expressed as .
[0033] Step S2: Based on multi-source basic data on flooding disasters within the target city area, obtain the emergency service demand sequence in the ecological environment, economic, and social dimensions.
[0034] Step S21: Based on the primary indicators of urban flooding, ecosystem service damage, and pollutant concentration in the target urban area, obtain the emergency service demand sequence in the ecological and environmental dimension.
[0035] Step S211: Calculate the pollution loss and ecosystem service loss of each grid unit based on the primary indicators of urban flooding, ecosystem service damage, and pollutant concentration in the target urban area; and obtain the ecological environment loss of the corresponding grid unit based on the pollution loss and ecosystem service loss of each grid unit.
[0036] Grid cells pollution losses Represented as: (1) in, Represents grid cells The amount of water accumulated in the urban area, ; This indicates the density of water. This indicates the price of ecological water required to dispose of pollutants; This indicates the total number of types of pollutants.
[0037] Grid cells ecosystem service loss Represented as: (2) in, Indicates the carbon content in CO2. , These represent the carbon fixation loss conversion coefficient and the oxygen release loss conversion coefficient, respectively.
[0038] Grid cells ecological and environmental losses Represented as: (3) Step S212: Sort the ecological and environmental losses of all grid units to obtain the emergency service demand sequence of the ecological and environmental dimension.
[0039] Step S22: Based on the primary indicators of urban flooding and land value in the target urban area, obtain the emergency service demand sequence in the economic dimension.
[0040] Step S221: Based on the inundation depth and land use price of each grid cell in the target urban area, obtain the economic loss of the corresponding grid cell.
[0041] Grid cells economic losses Represented as: (4) in, Represents grid cells At flood depth The loss rate was obtained by looking up a table.
[0042] In this embodiment, the primary waterlogging index reflects the severity of waterlogging disasters and related information, while the land value index reflects the differences in land value across different regions. Combining these two indicators allows for a more accurate determination of the direct economic losses suffered by the affected entity. After determining the direct economic losses of the affected entity, the economic losses of the corresponding grid units can be further determined. A grid unit is a spatial unit used to divide and manage a specific area, allowing for a more detailed and comprehensive assessment and statistical analysis of the economic losses across the entire disaster-stricken area. Therefore, through step S22, the specific amount of direct economic loss suffered by the affected entity can be determined based on these two key elements: the primary waterlogging index and the land value index.
[0043] Step S222: Sort the economic losses of all grid cells to obtain the emergency service demand sequence in the economic dimension.
[0044] Step S23: Based on the primary indicators of urban flooding and population density in the target urban area, obtain the emergency service demand sequence in the social dimension.
[0045] Step S231: Based on the inundation depth and population of each grid cell in the target urban area, obtain the social loss of the corresponding grid cell.
[0046] Grid cells social losses Represented as: (5) in, Represents grid cells The submergence state discrimination coefficient, , Representing grid cells respectively i The proportion of elderly and children in the population; , These are vulnerability weighting coefficients for the elderly and children, respectively, representing the high demand for emergency services among vulnerable groups. (6) in, This is the preset water depth safety threshold.
[0047] This step allows us to determine the number of people affected by flooding within each grid unit's flood-affected area.
[0048] Step S232: Sort the social losses of all grid units to obtain the emergency service demand sequence of the social dimension.
[0049] Step S3: Determine the emergency service demand levels for the ecological environment, economic, and social dimensions respectively, based on the emergency service demand sequence for each dimension; couple the emergency service demand levels for the ecological environment, economic, and social dimensions to obtain the comprehensive emergency service demand level for urban flooding disasters.
[0050] Step S31: Use the natural breakpoint method to process the emergency service demand sequences of the ecological environment dimension, economic dimension, and social dimension respectively, and determine the threshold for classifying the emergency service demand levels of the ecological environment dimension, economic dimension, and social dimension.
[0051] In the specific implementation process, the natural breakpoint method is used to classify the values of all grid units in the emergency service demand sequence of the ecological environment dimension, economic dimension, and social dimension, and to determine the threshold for classifying the emergency service demand levels of the ecological environment dimension, economic dimension, and social dimension.
[0052] For example, for the emergency service demand sequence in the ecological environment dimension, the ecological environment loss values of all grid units are divided into three levels: low, medium, and high using the natural breakpoint method. Each level corresponds to a specific numerical range, thus obtaining the threshold for classifying the emergency service demand levels in the ecological environment dimension. The threshold for classifying the emergency service demand levels in the economic and social dimensions is also determined using the same method to ensure that the level classification of each dimension can objectively reflect the actual differences in emergency service demand under that dimension.
[0053] Step S32: Using the threshold values for classifying emergency service demand levels in the ecological environment, economic, and social dimensions, determine the emergency service demand level corresponding to each grid unit in the emergency service demand sequence in the ecological environment, economic, and social dimensions.
[0054] Specifically, the ecological environment loss value of each grid unit in the emergency service demand sequence of the ecological environment dimension is compared with the division threshold of the ecological environment dimension. If the ecological environment loss value of a certain grid unit falls within the low-level threshold interval, the ecological environment emergency service demand level of the grid unit is low; if it falls within the medium-level threshold interval, the level is medium; if it falls within the high-level threshold interval, the level is high. Similarly, the economic loss value of each grid unit in the emergency service demand sequence of the economic dimension is compared with the division threshold of the economic dimension to determine the economic emergency service demand level of each grid unit; the social loss value of each grid unit in the emergency service demand sequence of the social dimension is compared with the division threshold of the social dimension to determine the social emergency service demand level of each grid unit. For example, assuming that the low, medium and high level division thresholds of the ecological environment dimension are [0, A), [A, B), [B, +∞) respectively, and the ecological environment loss value of a certain grid unit is C, if C<A, its ecological environment emergency service demand level is low; if A ≤ C<B, it is medium; if C ≥ B, it is high. The level determination processes of the economic and social dimensions are similar to this.
[0055] Step S33: Respectively take the highest level of the corresponding emergency service demand levels among all grid units in the emergency service demand sequences of the ecological environment dimension, the economic dimension and the social dimension as the emergency service demand levels of the ecological environment dimension, the economic dimension and the social dimension.
[0056] Specifically, in the emergency service demand sequence of the ecological environment dimension, the ecological environment emergency service demand levels of all grid units are traversed, and the level with the highest rank is selected as the emergency service demand level of the ecological environment dimension of the entire target urban area. For example, if among all grid units, there is at least one grid unit whose ecological environment emergency service demand level is high, the emergency service demand level of the ecological environment dimension of the target urban area is determined as high as a whole; if the highest ecological environment emergency service demand level of all grid units is medium, the overall level is medium; if the highest level is low, the overall level is low. The determination manners of the emergency service demand levels of the economic dimension and the social dimension are consistent with those of the ecological environment dimension, that is, the highest level of the economic emergency service demand levels of all grid units in the emergency service demand sequence of the economic dimension is taken as the emergency service demand level of the economic dimension, and the highest level of the social emergency service demand levels of all grid units in the emergency service demand sequence of the social dimension is taken as the emergency service demand level of the social dimension.
[0057] Step S34: Coupling the emergency service demand levels of the ecological environment dimension, the economic dimension and the social dimension to obtain the comprehensive emergency service demand level of urban waterlogging disasters.
[0058] Specifically, a comprehensive assessment of the emergency service demand levels in the ecological environment, economic, and social dimensions is conducted to determine the comprehensive emergency service demand level for urban flooding disasters.
[0059] For example, the highest level among the emergency service demand levels in the ecological environment, economic, and social dimensions can be directly selected as the comprehensive emergency service demand level for urban flooding disasters. In this case, the following judgment rules must be met: Judgment Rule 1: When the demand level in any dimension of ecological environment, economy or society is Level I, the comprehensive emergency service demand level is determined to be Level I; Judgment Rule 2: When no dimension is Level I, but there is a dimension with a demand level of Level II, then the comprehensive emergency service demand level is determined to be Level II; Judgment Rule 3: If no dimension is at level I or II, but there is a dimension with a demand level of level III, then the comprehensive emergency service demand level is determined to be level III. Judgment Rule 4: If no dimension is at level I, II, or III, but there is a dimension with a demand level of level IV, then the comprehensive emergency service demand level is determined to be level IV. Judgment Rule 5: For other situations that do not meet Rules 1 to 5, the comprehensive emergency service requirement is determined to be non-existent; The comprehensive emergency service demand levels are divided into Level I, Level II, Level III, Level IV and None, from highest to lowest.
[0060] Specific embodiment 2 of the present invention discloses an urban flooding disaster emergency service demand assessment system that couples ecology, economy, and society. A schematic diagram of the system is shown below. Figure 2 As shown, the system includes: The multi-source basic data acquisition module is used to acquire multi-source basic data on flooding disasters within the target city area; The multidimensional emergency service demand sequence calculation module is used to obtain emergency service demand sequences in ecological environment, economic dimension and social dimension based on multi-source basic data of flood disaster in the target city area; The comprehensive emergency service demand level assessment module is used to determine the emergency service demand levels for the ecological environment, economic, and social dimensions based on the emergency service demand sequence. By coupling the emergency service demand levels for the ecological environment, economic, and social dimensions, the comprehensive emergency service demand level for urban flooding disasters is obtained.
[0061] The specific implementation process of this invention can be found in the above method embodiments, and will not be repeated here.
[0062] Since this embodiment is based on the same principle as the above method embodiments, this system also has the corresponding technical effects of the above method embodiments.
[0063] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.
[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.
Claims
1. A method for assessing emergency service needs for urban flooding disasters that couples ecology, economy, and society, characterized in that, The method includes: Acquire multi-source basic data on flooding disasters within the target city area; Based on multi-source basic data on regional flooding in the target city, an emergency service demand sequence was obtained in the ecological, economic, and social dimensions. Based on the emergency service demand sequences of the ecological environment, economic, and social dimensions, the emergency service demand levels of the ecological environment, economic, and social dimensions are determined respectively; by coupling the emergency service demand levels of the ecological environment, economic, and social dimensions, the comprehensive emergency service demand level of urban flooding disaster is obtained.
2. The method for assessing the emergency service needs of urban flooding disasters that couples ecology, economy, and society as described in claim 1, is characterized in that... The multi-source basic data includes primary indicators of waterlogging, indicators of ecosystem service damage, indicators of pollutant concentration, indicators of land value, and indicators of population density.
3. The method for assessing the emergency service needs of urban flooding disasters that couples ecology, economy, and society as described in claim 2, is characterized in that... The obtained emergency service demand sequence in the ecological environment, economic, and social dimensions is then executed as follows: Based on the primary indicators of urban flooding, the indicators of ecosystem service damage, and the indicators of pollutant concentration in the target urban area, a sequence of emergency service needs in the ecological and environmental dimension is obtained. Based on the primary indicators of urban flooding and land value in the target urban area, an emergency service demand sequence in the economic dimension is obtained; Based on the primary indicators of urban flooding and population density in the target urban area, a sequence of emergency service needs in the social dimension is obtained.
4. The method for assessing the emergency service needs of urban flooding disasters that couples ecology, economy, and society, as described in claim 3, is characterized in that... The obtained emergency service demand sequence in the ecological environment dimension is then executed as follows: Based on the primary indicators of urban flooding, ecosystem service damage, and pollutant concentration in the target urban area, the pollution loss and ecosystem service loss of each grid unit are calculated; based on the pollution loss and ecosystem service loss of each grid unit, the ecological environment loss of the corresponding grid unit is obtained. The ecological and environmental losses of all grid units are sorted to obtain a sequence of emergency service needs in the ecological and environmental dimension.
5. The method for assessing the emergency service needs of urban flooding disasters that couples ecology, economy, and society as described in claim 4, is characterized in that... Grid cells pollution losses Represented as: (1) in, Represents grid cells pollutants The average concentration of events, Indicates pollutants Permissible emission concentrations; Indicates the total number of types of pollutants; Represents grid cells The amount of water accumulated in the urban area, , , Representing grid cells respectively The extent and depth of flooding; This indicates the density of water. This indicates the price of ecological water required to dispose of pollutants; Grid cells ecosystem service loss Represented as: (2) in, , Representing grid cells respectively Carbon fixation loss parameters and oxygen release loss parameters; Indicates the carbon content in CO2. , These represent the carbon fixation loss conversion coefficient and the oxygen release loss conversion coefficient, respectively. Grid cells ecological and environmental losses Represented as: (3)。 6. The method for assessing the emergency service needs of urban flooding disasters that couples ecology, economy, and society as described in claim 5, is characterized in that... The resulting emergency service demand sequence based on the economic dimension is then executed as follows: Based on the inundation depth and land use price of each grid cell in the target urban area, the economic loss of the corresponding grid cell is obtained; The economic losses of all grid units are sorted to obtain a sequence of emergency service needs in the economic dimension.
7. The method for assessing the emergency service needs of urban flooding disasters that couples ecology, economy, and society as described in claim 6, is characterized in that... The obtained emergency service demand sequence from the social dimension is then executed as follows: The social loss of each grid cell is obtained based on the inundation depth and population of each grid cell in the target urban area. The social losses of all grid units are sorted to obtain a sequence of emergency service needs in the social dimension.
8. The method for assessing the coupled ecological-economic-social needs of urban flooding disaster emergency services according to any one of claims 3-7, characterized in that, The determination of emergency service demand levels in the ecological, economic, and social dimensions shall be followed by the following: The natural breakpoint method was used to process the emergency service demand sequences in the ecological environment, economic, and social dimensions, and the thresholds for classifying the emergency service demand levels in these dimensions were determined. By using the threshold values for classifying emergency service demand levels in the ecological environment, economic, and social dimensions, the emergency service demand level corresponding to each grid unit in the emergency service demand sequence in the ecological environment, economic, and social dimensions is determined. The highest level of emergency service demand in each grid unit of the emergency service demand sequence in the ecological environment, economic, and social dimensions is taken as the emergency service demand level in the ecological environment, economic, and social dimensions, respectively.
9. The method for assessing the emergency service needs of urban flooding disasters that couples ecology, economy, and society as described in claim 8, is characterized in that... The comprehensive emergency service demand level for urban flooding disasters is obtained, and the following actions are taken: A comprehensive assessment of the emergency service demand levels across ecological, economic, and social dimensions is conducted to determine the comprehensive emergency service demand level for urban flooding disasters.
10. A system for assessing the emergency service needs of urban flooding disasters that couples ecology, economy, and society, characterized in that, The system includes: The multi-source basic data acquisition module is used to acquire multi-source basic data on flooding disasters within the target city area; The multidimensional emergency service demand sequence calculation module is used to obtain emergency service demand sequences in ecological environment, economic dimension and social dimension based on multi-source basic data of flood disaster in the target city area; The comprehensive emergency service demand level assessment module is used to determine the emergency service demand levels for the ecological environment, economic, and social dimensions based on the emergency service demand sequence. By coupling the emergency service demand levels for the ecological environment, economic, and social dimensions, the comprehensive emergency service demand level for urban flooding disasters is obtained.