安徽地质2026，Vol.36Issue(3)：257-260,4.
基于PSR-TOPSIS模型的耕地生态系统健康评价
Health Assessment of Cultivated Land Ecosystem Based on the PSR-TOPSIS Model
李红昌 1安明 1费雅洁 1郑旭阳 1刘美扬1
作者信息
- 1. 安徽省勘查技术院(安徽省地质矿产勘查局能源勘查中心),安徽 合肥 230041
- 折叠
摘要
Abstract
To scientifically evaluate the health status and evolutionary trends of the cultivated land ecosystem in a specific area,this study constructed an assessment framework for cultivated land ecosystem health based on the Pressure-State-Response(PSR)model.Utilizing statistical data from 2016 to 2020,the entropy weight method was employed to determine indicator weights,and the Technique for Order of Preference by Similarity to Ideal Solution(TOPSIS)model was applied to calculate the closeness degree(C value)of cultivated land ecosystem health.The results showed that from 2016 to 2020,the C value of the cultivated land ecosystem in the study area ranged from 0.4 to 0.6,corresponding to health level Ⅲ(sub-healthy state).This indicates that the cultivated land ecosystem is relatively fragile;although its structure and function remain basically intact,ecological problems still occur frequently.The overall C value showed an upward trend,with a slight decline in 2018.The entropy weight analysis revealed that key factors affecting cultivated land ecosystem health included grain output per unit of cultivated land,effective irrigation rate,multiple cropping index,and level of agricultural mechanization(positive indicators),as well as fertilizer load per unit of cultivated land,pesticide load,and plastic film load(negative indicators).This study provides a scientific basis for the protection and sustainable management of cultivated land ecosystems in the study area.关键词
耕地生态系统/TOPSIS模型/健康评价Key words
Cultivated land ecosystem/TOPSIS model/Health assessment分类
天文与地球科学引用本文复制引用
李红昌,安明,费雅洁,郑旭阳,刘美扬..基于PSR-TOPSIS模型的耕地生态系统健康评价[J].安徽地质,2026,36(3):257-260,4.
