基于熵权-TOPSIS的黄河上游耕地生态安全评价及障碍因子诊断  

Evaluation of Ecological Security of Cultivated Land in the Upper Reaches of the Yellow River Based on Entropy Weight-TOPSIS and Diagnosis of Obstacle Factors

作　　者：陈苗苗 吕剑平 CHEN Miaomiao;LUY Jianping(College of Finance and Economics,Gansu Agricultural University,Lanzhou 730070,China)

机构地区：[1]甘肃农业大学财经学院,甘肃兰州730070

出　　处：《云南农业大学学报（社会科学版）》2024年第5期72-80,共9页Journal of Yunnan Agricultural University(Social Science)

基　　金：甘肃省哲学社会科学规划项目“甘肃省农户耕地撂荒行为驱动因素及治理机制研究”(2023YB035);甘肃省哲学社会科学规划项目“包容性高质量发展目标下农户绿色生产行为及转型研究”(2023YB034)。

摘　　要：耕地生态安全对于区域生态环境保护及农业经济可持续发展具有重要意义。本文基于PSR模型构建指标体系,利用2012—2022年黄河上游5省区的面板数据,运用熵权-TOPSIS模型对黄河上游地区的耕地生态安全水平进行测度,并利用障碍度模型分别从准则层与指标层对其进行障碍因子诊断。结果表明,黄河上游耕地生态安全水平虽总体较低,但近年来得到了持续的改善,2012—2022年黄河上游耕地生态安全指数从0.406提升至0.457;此外,黄河上游耕地生态安全的地区差异特征较明显,在研究期内呈不平衡、不均衡的演化趋势。从准则层分析,压力与响应层的障碍度较小,耕地生态安全主要受状态的影响;从指标层分析,人均粮食占有量、人口自然增长率、水土流失治理面积、复种指数、粮食单位面积产量是影响黄河上游耕地生态安全的主要障碍因子。由此可见,黄河上游地区耕地生态安全情况有所好转,但水平依旧较低,需要因地制宜地采取耕地保护措施。Cultivated land ecological security is of great significance to regional ecological environment protection and sustainable development of agricultural economy.Based on the PSR model,this paper constructed an index system,used the panel data of the five provinces and regions in the upper reaches of the Yellow River from 2012 to 2022,used the entropy weight-TOPSIS model to measure the level of cultivated land ecological security in the upper reaches of the Yellow River,and used the obstacle degree model to diagnose the obstacle factors from the criterion layer and the indicator layer respectively.The results showed that,although the level of cultivated land ecological security in the upper reaches of the Yellow River was generally low,it had been continuously improved in recent years.The ecological security index of cultivated land in the upper reaches of the Yellow River increased from 0.406 to 0.457 in 2012-2022.Its regional differences were obvious,showing an unbalanced and uneven evolution trend during the study period.From the analysis of criterion layer,the obstacle degree of pressure and response layer was small,and the ecological security of cultivated land was mainly affected by the state.From the index layer analysis,per capita grain occupancy,natural population growth rate,soil erosion control area,multiple cropping index,grain yield per unit area were the main obstacle factors affecting the ecological security of cultivated land in the upper reaches of the Yellow River.It could be seen that the ecological security of cultivated land in the upper reaches of the Yellow River had improved,but the level was still low,so it was necessary to take measures to protect cultivated land according to local conditions.

关 键 词：耕地生态安全 障碍因子 黄河上游 

分 类 号：F301.21[经济管理—产业经济]