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61 results about "Landscape pattern" patented technology

Evaluation method for evolution characteristics and evolution driving factors of space-time pattern of park green land

The invention discloses a method for evaluating evolution characteristics and evolution driving factors of a space-time pattern of a park green land, and particularly relates to the technical field of crossing of smart cities and landscape ecology, and the method comprises the steps: obtaining multi-period remote sensing image data and planning maps, and constructing a multi-source database; interpreting the image based on a random forest supervised classification algorithm to generate a park green space distribution map, and optimizing the precision; adopting a landscape ecology theory to select a landscape pattern index to quantify space-time evolution characteristics; constructing a driving evaluation index system, and analyzing a driving mechanism by means of a multiple regression model and a space measurement model; and generating a three-level spatial pattern optimization strategy based on the result and outputting a visual decision map. According to the method, the spatial-temporal pattern evolution characteristics and driving factors of the urban park green land can be comprehensively analyzed, and a scientific basis and decision support are provided for planning, management and protection of the urban park green land.
Owner:ANHUI AGRICULTURAL UNIVERSITY +1

Land space optimization configuration method under terrain gradient constraint

The invention discloses a land space optimization configuration method under terrain gradient constraint. The method comprises the following steps: S1, collecting multi-source geographic data to construct a spatial database; s2, factors such as gradient and elevation are extracted, and terrain gradient partitions are divided; s3, constructing a three-dimensional conflict matrix based on suitability evaluation and landscape pattern analysis; s4, constructing a driving index system, and analyzing a driving path of the spatial conflict; s5, setting a multi-objective optimization function, and constructing game rules and spatial conversion constraint conditions of the three types of subjects; s6, integrating the C-FLUS model, the MAOOAM model and the R2D3 model, and constructing a coupling system to execute dynamic optimization; and S7, when the convergence condition is met, outputting an optimal configuration scheme and generating a compensation and control strategy. According to the method, efficient optimization and intelligent decision support of multi-target land configuration under the terrain differentiation condition are realized.
Owner:GANNAN NORMAL UNIV

Ecological security pattern risk assessment method based on finite element simulation

The invention discloses an ecological security pattern risk assessment method based on finite element simulation, and belongs to the technical field of ecological security pattern risk assessment, and the method comprises the following steps: S1, constructing an ecological security pattern; s2, discretizing the ecological corridor; s3, expressing the internal condition of the ecological corridor by using a landscape pattern index, and obtaining the material attribute of the three-dimensional model by converting the landscape pattern index; s4, extracting normalized vegetation indexes and traffic network density data in a preset range of the ecological corridor, and converting the data into external loads after processing; s5, constraint is applied to the three-dimensional model corresponding to the ecological source land and the three-dimensional model corresponding to the pedal stone; s6, constructing four scenes based on the three-dimensional model, and performing finite element simulation on the four scenes; and S7, making an ecological security pattern optimization strategy based on results of multi-scenario analysis and finite element simulation. And the risk assessment of the ecological space is carried out by using theoretical methods such as stress and deformation of three-dimensional mechanics, so that the method has relatively high innovativeness and practicability, and has unique protection value.
Owner:SICHUAN NORMAL UNIV

Method and system for evaluating nonlinear influence of greenbelt landscape pattern on rainfall flood regulation service

The invention discloses a method and a system for evaluating the nonlinear influence of a greenbelt landscape pattern on a rainfall flood regulation service. The method comprises the following steps: step 1, constructing a basic database; 2, processing data variables; 3, constructing a nonlinear model: taking a green land landscape pattern factor as a core explanation variable, taking a rainfall flood regulation service index as a response variable, introducing a natural environment factor and a social economic factor as control variables, training the random forest model, and constructing a rainfall flood regulation service prediction model; 4, key factors are identified, wherein the top-ranked factors are regarded as key factors playing a role in rainfall flood adjustment service; step 5, analyzing a key threshold: performing visual analysis on a nonlinear relationship between the key factor and the rainfall flood adjustment service by adopting a partial dependency graph algorithm; and by observing positive and negative influence trends and change rates of the key factors on the rainfall flood regulation service indexes in different value intervals, identifying potential key thresholds.
Owner:ZHEJIANG UNIV OF TECH

Landscape pattern classification method combining global-local multi-order deep and shallow layer features

The invention discloses a landscape pattern classification method combining global-local multi-order deep and shallow layer features, and relates to the technical field of photogrammetry data processing, and the method comprises the steps: firstly introducing a deep and shallow layer feature cross fusion module between an encoder and a decoder to relieve the semantic gap between different levels of features generated by a Swin Transform; three global-local attention modules are introduced into a decoder part to aggregate global context information and local detail information, and identification of intra-class feature consistency and inter-class feature difference is enhanced. According to the method, the advantages of the CNN and the Swin Transform in local and global information extraction are fully utilized, global context information and local fine-grained information are aggregated, the problems of spectral feature similarity and intra-class difference between ground feature classes in a complex landscape pattern scene are solved, and the method is of great significance to dynamic monitoring of an ecological system.
Owner:ANHUI UNIV

Ecological vulnerability evaluation method based on road domain landscape pattern optimization

The invention discloses an ecological vulnerability evaluation method based on road domain landscape pattern optimization, and the method comprises the steps: obtaining expressway road domain environment data as training data, and obtaining ecological environment data; calculating an ecological environment quality index of the ecological environment data, and obtaining landscape structure features in the target area; integrating the landscape pattern index into an ecological sensitive factor, and constructing an ecological vulnerability evaluation model by adopting an SRP structure; performing spatial autocorrelation analysis on space-time evolution of the ecological vulnerability of the road domain according to the ecological vulnerability evaluation index, establishing an ecological vulnerability multi-scene simulation model, performing overlay analysis on an ecological vulnerability evaluation result and a land utilization type, obtaining a specific restoration strategy, tracking space-time evolution characteristics of the ecological vulnerability, and performing road region ecological vulnerability evaluation. Ecological vulnerability influence factors are adjusted based on different scenes, future possible ecological vulnerability risks are simulated, specific restoration strategies are made according to different partition standards, and effective configuration and use efficiency of resources are ensured.
Owner:CCCC THIRD HIGHWAY ENG CO LTD

County scale cultivated land supplement resource potential tapping and effect evaluation method

The invention belongs to the field of cultivated land protection and spatial information technology application, and particularly relates to a county scale cultivated land supplement resource potential tapping and effect evaluation method. The method comprises the steps of data acquisition, comprehensive ranking of renovatable resources, cultivated land growth probability analysis based on a random forest algorithm, suitability evaluation based on multi-target correction, cultivated land supplement simulation and implementation effect evaluation. And a cellular automaton module of the plaque generation land utilization simulation model simulates cultivated land change, and carries out quantitative evaluation of a cultivated land simulation result in combination with a landscape pattern index. The invention aims to provide the scientific and objective county scale cultivated land reserve resource potential tapping and improvement effect evaluation method, the problems of data distortion, strong subjectivity, scale mismatching, insufficient effect evaluation and the like in the prior art are solved, and technical support is provided for cultivated land occupation and supplement balance work.
Owner:QINGDAO INST OF SURVEYING & MAPPING SURVEY

Resource supply, landscape pattern and interference condition-based habitat quality evaluation method

The invention discloses a habitat quality evaluation method based on resource supply, landscape pattern and interference conditions, and the method comprises the steps: constructing a multi-level habitat quality comprehensive evaluation index system based on the resource supply-landscape pattern-interference conditions, and the multi-level habitat quality comprehensive evaluation index system comprises seven evaluation indexes in three dimensions; carrying out representation data extraction and standardization processing on the seven evaluation indexes; based on the standardized data, determining the weights of the seven evaluation indexes by using an analytic hierarchy process; based on the standardized data, analyzing a distribution structure of seven evaluation indexes by using a K-Means clustering algorithm, and determining an optimal clustering number; and calculating the habitat quality index of each cluster based on the clustering number and the weight of each evaluation index, and obtaining an evaluation result of the habitat quality.
Owner:WUHAN UNIV

Landscape ecological safety dynamic evaluation method based on multi-attribute decision model

The invention discloses a landscape ecological safety dynamic evaluation method based on a multi-attribute decision model, and the method comprises the steps: obtaining the spatial feature scale of each land utilization type through employing a gap degree landscape scale analysis method, and taking the spatial feature scale as a feature grid scale for landscape pattern analysis; calculating landscape pattern characteristic indexes under each characteristic grid scale in different periods, and constructing a regional landscape ecological safety assessment model; obtaining a landscape ecological safety index of each characteristic grid scale in a continuous time range by adopting a Lagrange interpolation method, and predicting a landscape ecological safety index value of each characteristic grid scale in a future period; a multi-attribute decision CoCoSo model is adopted to calculate the weighted sum of landscape ecological safety and the sum of index weighted products, different aggregation functions are adopted to obtain a landscape ecological safety dynamic index, and finally a natural breakpoint method is adopted to perform hierarchical and partitioned management on the landscape ecological safety dynamic index of a research area. The method can provide technical support for protection and restoration of a regional landscape ecosystem.
Owner:SOUTHWEAT UNIV OF SCI & TECH +1

Multi-scale response analysis method for watershed runoff to landscape pattern

The invention relates to a multi-scale response analysis method of drainage basin runoff to a landscape pattern, ecological hydrological research is the basis of comprehensive management of a drainage basin, and the response relationship of the runoff to the landscape pattern is an important decision basis for integrated protection and systematic management of landscapes, forests, lakes, grasses and sand in the drainage basin. Taking the Poyang Lake basin as an example, the method comprises the following steps: establishing a basin SWAT model; determining parameter values of the Poyang Lake basin based on an SUFI-2 method and verifying the correctness of the parameter values; inputting parameters, and calculating the runoff volume of the Poyang Lake drainage basin through an SWAT model; constructing a landscape type division system of'landscape, water, forest field, lake, grass and sand 'based on land utilization / cover; selecting landscape indexes through collinearity diagnosis; the influence of landscape composition on the runoff is discussed by utilizing correlation analysis methods such as a scatter diagram, a Pearson's correlation coefficient and a geographically weighted regression model, and the response of the runoff to the landscape pattern is revealed in landscape and type scales. According to the method, the Poyang Lake basin is taken as a research object, runoff simulation and landscape pattern analysis are respectively carried out by utilizing an SWAT model and Fragstats software, and nonlinear characteristics of runoff response to landscape composition and landscape pattern are revealed.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI

Dynamic Evaluation Method of Landscape Ecological Security Based on Multi-Attribute Decision-Making Model

The present invention discloses a dynamic evaluation method for landscape ecological security based on a multi-attribute decision-making model, including: adopting the gap degree landscape scale analysis method to obtain the spatial characteristic scales of each land use type, and using them as the characteristic grid scales for landscape pattern analysis; calculating the landscape pattern characteristic indices at each characteristic grid scale in different periods to construct a regional landscape ecological security evaluation model; using the Lagrange interpolation method to obtain the landscape ecological security indices within the continuous time range of each characteristic grid scale, and predicting the landscape ecological security index values of each characteristic grid scale in the future period; adopting the multi-attribute decision-making CoCoSo model to calculate the weighted sum and the sum of the exponential weighted products of landscape ecological security, and using different aggregation functions to obtain the dynamic index of landscape ecological security. Finally, the natural breakpoint method is used to conduct hierarchical and zonal management on the dynamic index of landscape ecological security in the research area. The present invention can provide technical support for the protection and restoration of regional landscape ecosystems.
Owner:SOUTHWEAT UNIV OF SCI & TECH +1

Method and system for determining appropriate granularity of landscape pattern analysis

The invention provides a method and system for determining appropriate granularity for landscape pattern analysis, and the method comprises the steps: enabling high-resolution land cover or land utilization vector data of a target region to generate a first multi-granularity sequence with a coarse step length according to a maximum area value rule (Rule of Maximum Area, RMA), and determining a granularity upper threshold value and a scale domain according to three conservation criteria of landscape composition, area and pattern form; a second multi-granularity sequence in the scale domain is generated with a fine step length according to the RMA rule, and a landscape pattern index, sensitive to the scale effect, of the second multi-granularity sequence is calculated; the method comprises the following steps: performing mutation analysis by adopting a non-parametric rank test (Mann-Kendall and Pettitt test), and taking an effective mutation point with the highest frequency as an appropriate granularity; according to the method, information loss and nonparametric mutation inspection are quantified through three conservation criteria, the problems that a traditional method neglects landscape pattern form loss, granularity judgment is high in subjectivity, data distribution depends and the like are solved, and the objectivity of granularity decision and ecological application precision are improved.
Owner:SHANGHAI CONSTR LAND & LAND CONSOLIDATION AFFAIRS CENT

Ecological risk evaluation and prediction evaluation method based on multi-source evaluation framework

The invention provides an ecological risk evaluation and prediction evaluation method based on a multi-source evaluation framework, and relates to the technical field of ecological risk evaluation, and the method specifically comprises the steps: dividing a target region into grid units, and collecting landscape pattern and environmental social economic data; analyzing landscape data through a sliding window method, and calculating a landscape ecological risk value of each unit; constructing a regional ecological risk assessment index system based on social economic data, determining an index weight by adopting Bayesian BWM and CRITIC methods, and performing weighted calculation to obtain a regional ecological risk value; integrating the two types of risk values to form a spatial distribution diagram, and superposing to obtain a unit comprehensive ecological risk value; and performing risk grading by adopting a natural breakpoint method, generating a grading graph, predicting risk early warning time of each unit based on a historical trend, and realizing ecological risk dynamic evaluation and early warning.
Owner:NORTHEAST NORMAL UNIVERSITY

Basin landscape pattern change and water quality effect analysis method

InactiveCN120218390AResourcesWatershed managementEnvironmental resource management
The invention discloses a watershed landscape pattern change and water quality effect analysis method, which belongs to the technical field of landscape ecology, and comprises the following steps: step 1, data collection and preprocessing; step 2, landscape pattern analysis; 3, water quality analysis; 4, analyzing the correlation between the landscape pattern and the water quality; and 5, formulating a targeted drainage basin management strategy according to an analysis result. According to the method, a plurality of technical means such as a geographic information system (GIS), a remote sensing technology and statistical analysis are combined, the landscape pattern change and the water quality effect of the watershed can be comprehensively and systematically analyzed, and the comprehensive analysis method is beneficial to deeply understanding the complexity and the dynamic nature of the watershed ecosystem; and powerful support is provided for formulating a scientific and reasonable drainage basin management strategy.
Owner:INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS

Method for establishing non-material cultural heritage space-time database

The application discloses a method for establishing a non-material cultural heritage space-time database, characterized in that, a basic space-time database is first established to arrange time events of the non-material cultural heritage, then a transmission space-time database is established to analyze space information such as a spatial distribution dispersion degree of the non-material cultural heritage at a transmission destination, a spatial transmission distribution feature of the transmission destination and a spatial action feature of the transmission destination, and then a chronicle space-time database is jointly constructed through the space information and the time events. Thus, the relevant chronicle theme information is associated with basic geographic elements, the non-material cultural heritage landscape pattern described in the chronicle can be presented, and the space-time process of cultural transmission and diffusion can be excavated.
Owner:ZHONGGUI DEAN TRIANGLE CULTURE & TOURISM RES INST CO LTD

Landscape pattern and spatial statistics coupled ion adsorption type rare earth enrichment area prediction method

The invention relates to the technical field of regional rare earth prediction, in particular to a landscape pattern and spatial statistics coupled ion adsorption type rare earth enrichment region prediction method, and the method comprises the steps: obtaining an ion adsorption type rare earth ore control index parameter set, rare earth abundance data and rare earth content actual measurement data of a target region; constructing an effect coefficient set according to the geological-hydrological index parameter set and the rare earth content measured data; constructing a landscape resistance field according to the landscape index parameter set to obtain the landscape resistance field; obtaining a spatial weight matrix; performing spatial autocorrelation analysis according to the rare earth abundance data and the spatial weight matrix to obtain spatial autocorrelation analysis indexes; performing rare earth enrichment probability index prediction according to the geological-hydrological index parameter set, the effect coefficient set, the landscape resistance field and the spatial autocorrelation analysis index to obtain rare earth enrichment probability index data; and performing rare earth enrichment area prediction on the target area according to the rare earth enrichment probability index data to obtain a rare earth enrichment area prediction result of the target area.
Owner:GUANGZHOU INST OF GEOGRAPHY GUANGDONG ACAD OF SCI +1

A method for improving the precision of human footprint index

This invention relates to the field of ecological protection zone identification technology, and particularly to a method for improving the accuracy of the Human Footprint Index. The method comprises the following steps: S1, Population Grid Redistribution: A construction land mask is extracted from land cover data. Population statistics data from the construction land mask and population grid data are input into the iURBAN algorithm to redistribute the population grid data. Population statistics data are then used to verify the accuracy of the population grid data before and after redistribution. S2, Fragmentation Index Scoring: A movement speed grid is calculated. City tiers are classified based on land cover data. Based on the city tier classification and movement speed grid, different levels of urban patches representing urban edges are obtained. Landscape pattern indicators representing fragmentation are calculated, and fragmentation index scores are assigned based on the landscape pattern indicator calculation results. S3, Human Footprint Index Calculation. This invention redistributes population data from the population grid to optimize the population distribution and improve the accuracy of the population grid data.
Owner:YUNNAN UNIV

Optimized configuration method and system for blue-green space

This invention relates to a method and system for optimizing the configuration of blue-green spaces. The method includes: acquiring collected data of the area to be evaluated; performing quantitative landscape pattern analysis of the area based on the collected data; performing integration analysis of the area based on the results of the quantitative landscape pattern analysis; conducting landscape optimization evaluation of the area based on the results of the quantitative landscape pattern analysis and the integration analysis to obtain the optimal integration degree; and optimizing the area based on the optimal integration degree. This invention enables accurate evaluation of blue-green spaces and effectively optimizes their configuration, resulting in a rational spatial distribution that avoids fragmentation and poor connectivity issues.
Owner:SHANGHAI LANDSCAPING CONSTR CO LTD +1

Optimal configuration method and system for blue-green space

The invention relates to an optimal configuration method and system for a blue-green space. The optimal configuration method of the blue-green space comprises the following steps: acquiring acquisition data of a to-be-evaluated area; performing landscape pattern quantitative analysis on the to-be-evaluated area based on the collected data; carrying out fusion degree analysis on the to-be-evaluated area based on a landscape pattern quantitative analysis result; performing landscape optimization evaluation on the to-be-evaluated area based on a landscape pattern quantitative analysis result and a fusion degree analysis result to obtain an optimal fusion degree; and optimizing the to-be-evaluated region based on the optimal fusion degree. According to the method, accurate evaluation of the blue-green space can be realized, and space optimization configuration can be effectively carried out, so that the space distribution of the blue-green space is reasonable, and the problems of fragmentation, poor connectivity and the like do not exist.
Owner:SHANGHAI LANDSCAPING CONSTR CO LTD +1

A method for tapping potential and evaluating effectiveness of supplementary cultivated land resources at the county scale

The present invention belongs to the field of cultivated land protection and the application of spatial information technology, and specifically relates to a method for tapping potential and evaluating the effectiveness of supplementary cultivated land resources at the county scale; the method includes: data acquisition, comprehensive investigation of exploitable resources, analysis of the probability of cultivated land growth based on the random forest algorithm, suitability evaluation based on multi-objective correction, steps of simulating supplementary cultivated land and evaluating the implementation effectiveness; a cellular automaton module for generating a land use simulation model based on patches to simulate cultivated land changes, and carrying out quantitative evaluation of the cultivated land simulation results in combination with landscape pattern indices. The purpose of the present invention is to provide a scientific and objective method for evaluating the effectiveness of tapping and renovating the potential of cultivated land reserve resources at the county scale, to solve problems such as data distortion, strong subjectivity, scale mismatch, and insufficient effectiveness evaluation in the prior art, and to provide technical support for the work of achieving dynamic balance between cultivated land occupation and compensation.
Owner:QINGDAO INST OF SURVEYING & MAPPING SURVEY

A big data-based paddy field landscape planning processing method and system

This application discloses a method and system for paddy field landscape planning and processing based on big data. The method includes: collecting raw paddy field datasets to construct a landscape baseline model; extracting basic field attributes and spatial relationship data to construct candidate and constraint sets, and determining the optimal landscape pattern configuration scheme; extracting unit spatial relationships and ecological adaptability indicators to synthesize spatial weight information; calculating the connectivity distance from the centroid of each unit to the nearest water system node, marking breakpoints to reconstruct the water system path; scheduling the entry sequence and operation time of construction machinery, periodically monitoring water quality parameters, and adjusting planting density. The system includes a data acquisition and modeling module, a field selection module, a weight configuration module, a water system correction module, and a scheduling and execution module. This application achieves collaborative management of paddy field landscape planning and construction operation and maintenance through multi-source data fusion and dynamic optimization mechanisms, providing scientific decision-making support for agricultural modernization.
Owner:MIANYANG CITY UNIV

Ecological protection red line optimization range determination method and system

The invention discloses an ecological protection red line optimization range determination method and system, and the method comprises the steps: obtaining dominant ecological system service evaluation results of each spatial scale unit in a target region under different spatial scales; respectively acquiring landscape pattern index data of each spatial scale unit in the target area under each different spatial scale; analyzing the driving degree of the landscape pattern index to the dominant ecosystem service under different spatial scales, and determining an optimized spatial scale; according to the change trend of the dominant ecosystem service along with the landscape pattern index under the optimized spatial scale, identifying a landscape pattern index abrupt change point and determining a landscape pattern index threshold value; and obtaining a spatial scale unit which does not meet the landscape pattern index threshold requirement in the target area, wherein the ecological protection red line area is the optimization range. According to the method, the ecological protection red line optimization range is determined based on the dynamic coupling relationship between the landscape pattern and the ecological system service, and the scientificity and rationality of ecological protection red line optimization can be ensured.
Owner:WUHAN BOTANICAL GARDEN CHINESE ACAD OF SCI

Country landscape pattern collaborative optimization method, device and equipment based on dynamic pollution assessment and multi-target constraint and medium

The invention discloses a rural landscape pattern collaborative optimization method, device, equipment and medium based on dynamic pollution assessment and multi-target constraint, and the method comprises the steps: carrying out the multi-scale space assessment of the non-point source pollution risk of a target region through obtaining the source-sink landscape space data and dynamic pollution source strong parameters of the target region; pollution risk distribution information is generated; establishing a constraint rule base including an ecological environment target, a policy planning target and a landscape pattern target; and based on a historical landscape evolution rule, introducing the constraint rule base as a decision-making layer, carrying out multi-target comprehensive scoring and screening on state conversion of landscape cells, and simulating to generate a future landscape pattern scheme meeting the multi-target constraint. According to the method, dynamic and fine environmental impact assessment and active and multi-target spatial layout optimization can be deeply coupled, and transformation from assessment and planning separation to assessment and optimization integration is realized.
Owner:SUZHOU VOCATIONAL INSTITUTE OF INDUSTRIAL TECHNOLOGY

Wetland landscape pattern classification method based on optimized feature parameters

This invention discloses a wetland landscape pattern classification method based on optimized feature parameters. First, multispectral and topographic data of the target wetland are preprocessed to extract feature parameters from the preprocessed data. Wetland landscape categories are defined, identifying 13 land cover types. Training samples are determined by referencing field survey data, original multispectral image data, principal component analysis (PCA1) of original remote sensing data, and the tasseled cap transformation brightness component of original remote sensing data. For the preprocessed multispectral data, wetland information extraction is performed using both maximum likelihood classification and decision tree classification. The classification results from the two extractions are combined with the extracted feature parameters to form fused data. Information extraction based on maximum likelihood classification is then performed on the fused data to obtain dynamic change analysis results of wetland landscape classification. Combined with optimized feature parameters, multiple feature parameters are fused to achieve information extraction from remote sensing images and refined classification of wetland landscapes.
Owner:QINGDAO INST OF MARINE GEOLOGY +1

Yellow River downstream city landscape ecological risk analysis method based on high score data

The invention discloses a Yellow River downstream city landscape ecological risk analysis method based on high-score data, and relates to the technical field of resource analysis, and the method comprises the steps: obtaining land utilization classification data, dividing an ecological risk evaluation price network based on the land utilization classification data, carrying out the statistics of landscape pattern indexes in each grid, and carrying out the calculation of the ecological risk evaluation price network. Generating landscape interference degree space distribution data; obtaining multi-dimensional geographical environment factor data of the research area, performing spatial correlation analysis on the multi-dimensional geographical environment factor data and the land utilization classification data, and screening out dominant environment factors; generating landscape vulnerability spatial distribution data based on a spatial association relationship between the dominant environmental factors and the land utilization classification data; according to the method, all technical links are connected in series by taking a uniform grid space as an analysis reference, so that refined space representation and scientific coupling fusion of the landscape interference degree and the landscape vulnerability are realized, and the space accuracy of a landscape ecological risk analysis result is greatly improved.
Owner:GEOPHYSICAL SURVEY TEAM OF SHANDONG COALFIELD GEOLOGY BUREAU

A method for simulating water quantity and quality of a mountain front plain type town area considering rainwater grate diversion

The present application belongs to the technical field of hydrodynamics and environmental engineering, and provides a kind of simulation method for water quantity and quality of piedmont plain type town area considering rainwater grate diversion, and the main steps include: basic database construction, catchment unit division, rainwater grate determination, drainage channel generalization and key process numerical calculation.The present application considers the influence of surface runoff velocity and terrain slope on rainwater grate diversion, corrects and establishes the diversion calculation formula of different types of rainwater grates, improves the accuracy of rainwater grate diversion calculation, and overcomes the subjective definition of hydraulic connection between surface runoff and drainage network in traditional method;At the same time, the present application considers the function of piedmont plain city land distribution, establishes a surface catchment unit division method based on landscape pattern, can accurately represent the influence of hydraulic connection between land use types, microtopography and other factors on surface runoff and pollution output, and overcomes the subjectivity and singleness of traditional methods such as thiesen polygon and road cutting method.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1

Forest grass landscape pattern identification method based on unmanned aerial vehicle image

The invention discloses a forest and grass landscape pattern identification method based on unmanned aerial vehicle images, and the method comprises the steps: carrying out the definition and cloud shielding screening of images collected by an unmanned aerial vehicle through a random forest algorithm, and obtaining a high-quality first image data set; then, in combination with vegetation types and spatial distribution characteristics, landscape elements are classified by using a support vector machine, acquisition parameters are optimized, and a second image data set is generated. Further considering the influence of seasonal variation on spectral characteristics, selecting representative time phase images, and constructing a third image data set; and plaque information is calculated and fine plaques are fused to obtain fused plaque distribution data, and then multi-scale pattern indexes such as a shape index, an aggregation degree, a separation degree and a spreading degree are analyzed. And finally, indexes related to image definition are extracted, and a landscape pattern report is generated. According to the method, full-process automation from data screening, element classification, time phase selection to pattern analysis is realized, and the recognition precision and adaptability of the forest and grass landscape pattern are remarkably improved.
Owner:SHANXI ACAD OF FORESTRY & GRASSLAND SCI

Railway corridor biodiversity value assessment method and assessment device

ActiveCN116128350BCharacter and pattern recognitionResearch evaluationData mining
The present application relates to a kind of railway corridor biodiversity value evaluation method and evaluation device, the method comprises: the habitat quality data of target railway corridor collected in advance and landscape pattern data are input to the model constructed in advance, the ecological value index of the railway corridor is output;Based on the social value type and evaluation rule constructed in advance, the social value index of the target railway corridor is calculated;The ecological value index and the social value index are weighted by the analytic hierarchy process constructed in advance, and the ecological value index and the social value index are superimposed according to the weight calculation, to determine the biodiversity value comprehensive evaluation index of the target railway corridor.This method is obtained by combining geographic information software, landscape pattern model, ecosystem service and the comprehensive evaluation model of trade-off multiple models or tools, and the research evaluation index is comprehensive, improves the accuracy and real of railway corridor biodiversity value, and the practicality is high.
Owner:BEIJING JIAOTONG UNIV +1

Simulation analysis method and system for influence of watershed landscape pattern evolution on water quality

The invention discloses a simulation analysis method and system for the influence of watershed landscape pattern evolution on water quality, and relates to the technical field of water quality simulation analysis, and the method comprises the following steps: collecting water quality monitoring data including image data, landform data, meteorological data and river data; constructing a water quality output model through the pre-processed river data in combination with a multiple linear regression algorithm, and further obtaining a water quality evaluation index; based on the obtained water quality evaluation index, combining a neural network algorithm to construct a drainage basin water quality simulation analysis model; according to the method, the multispectral analysis technology, the multiple linear regression algorithm, the neural network algorithm and the simulation analysis technology are closely combined with the modern information technology, and therefore the simulation analysis report of the drainage basin water quality is generated. The problem that the traditional method is difficult to analyze the dynamic influence of basin landscape pattern evolution on water quality is solved.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S