A cultivated land ecological safety comprehensive evaluation method and system based on multi-model coupling

CN121235183BActive Publication Date: 2026-04-21INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
Filing Date
2025-09-15
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing technologies are insufficient to comprehensively assess the current state of farmland ecological security, cannot support the construction of a farmland protection system that integrates "quantity, quality, and ecology," and face potential risks to stable farmland production in the context of future climate change, lacking scientific evaluation methods.

Method used

A multi-model coupling approach was adopted, using ArcGIS software for raster division. Combined with grain yield prediction models and ecosystem service function prediction models, raster regions of cultivated land were divided and data predictions were performed. The ecological functions of cultivated land under future scenarios were simulated through an ecological security comprehensive evaluation functional model, and evaluation was conducted using spatial classification methods and ecological security comprehensive evaluation index calculation formulas.

Benefits of technology

This has enabled a systematic evaluation of the ecological functions of arable land, improved the accuracy of the evaluation, provided a scientific basis for optimizing the spatial layout of arable land and formulating control policies, and improved the comprehensive evaluation method for the ecological functions of arable land.

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Abstract

The application discloses a kind of based on the cultivated land ecological safety comprehensive evaluation method and system of multi-model coupling, which comprises: setting the future multi-source data set of the cultivated land to be evaluated in future time period;Using the grid calculator in ArcGIS software, the grid division is carried out on the cultivated land to be evaluated, a plurality of grid regions are obtained, and the future multi-source data set is divided into grid based on the plurality of grid regions, to obtain the future multi-source sub-data set of each grid region;Using the multi-ecological safety comprehensive evaluation function quantity model that has been constructed, spatial classification method and the ecological safety comprehensive evaluation index calculation formula that is constructed, the future multi-source sub-data set of each grid region is predicted, to obtain the ecological safety comprehensive evaluation index corresponding to each grid region.The application simulates the ecological function of the cultivated land to be evaluated under future scenario by coupling multi-ecological safety comprehensive evaluation function quantity model, to realize the system evaluation of cultivated land ecological function of the cultivated land to be evaluated under future scenario.
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Citation Information

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