Ecological Corridor Width Optimization with IEW-TOPSIS
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Solution Overview
Problem
Existing methods fail to identify an optimal corridor width that balances cost, ecological function, and species migration resistance, particularly in complex topographies, necessitating a more effective approach for corridor construction.
Innovation Solution
A method involving geographic data acquisition, ecosystem service evaluation, resistance surface construction, and use of the IEW-TOPSIS model to determine the optimal corridor width based on cost, functional, and ecological benefit indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If corridor width is increased to improve species migration and material flow, then ecological function is improved, but construction cost increases
Solution Approach 1:
The patent applies parameter changes by systematically varying corridor width as a key design parameter and evaluating its impact on multiple objectives (ecological function, construction cost, species migration resistance). The IEW-TOPSIS model optimizes this parameter by comparing different width scenarios against ideal solutions, identifying the optimal width that balances competing requirements without excessive cost or insufficient ecological performance.
2Quantity of substance
If corridor width is decreased to reduce construction cost, then construction cost is reduced, but species migration capability deteriorates
Solution Approach 1:
The patent uses parameter changes by evaluating multiple corridor width scenarios and selecting the optimal width that satisfies minimum ecological requirements while minimizing construction cost. The IEW-TOPSIS model enables this by comparing actual corridor designs against ideal solutions that perfectly balance cost and ecological function, allowing identification of the practical optimal width that approaches the ideal without excessive compromise to species migration capability.
3Measurement precision
If complex evaluation models are used to identify optimal corridor width, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent employs an intermediary approach by using the IEW-TOPSIS model as a mediating evaluation system that integrates multiple indicators (construction cost, ecological function, species migration resistance) into a unified framework. This intermediary model simplifies the complex multi-criteria decision-making process by providing a structured method to compare different corridor width scenarios against ideal solutions, achieving precise evaluation without requiring excessively complex analytical apparatus.
Data Source
AI summary
A method for identifying an optimal corridor width includes: acquiring geographic information data of a target region; evaluating ecosystem service functions of the target region, and constructing an ecological source land in combination with a nature reserve; constructing a resistance surface indicator system, and obtaining a disaster susceptibility distribution result by using geological disaster distribution point data to correct a resistance surface, to thereby obtain a real resistance surface; importing data of the ecological source land and data of the real resistance surface into LINKAGE MAPPER to generate an ecological corridor; constructing an evaluation system of the optimal corridor width based on three aspects of cost-function-ecological benefits, and evaluating the ecological corridor by using an IEW-TOPSIS model to obtain the optimal corridor width of the ecological corridor. The method can compare and identify the corridor width most suitable for construction, and provide reference base for corridor construction.