基于熵权-逼近理想解TOPSIS理论的甘肃省生态安全评价

郑乐乐

摘 要：生态环境保护与建设是区域生态安全战略实施的重要一环。结合甘肃省2012—2019年生态环境状况，基于分布式处理系统更换（Distributed Processing System Replacement，DPSR）模型构建生态安全综合评价指标体系，根据熵值法与逼近理想解TOPSIS理论对其生态环境状况进行综合分析研究。结果表明：甘肃省2012—2014年生态安全综合得分有所下降，环境污染有所加重;2015—2019年生态安全综合评价得分总体呈现上升趋势;总体上生态安全等级由2012年的敏感等级逐渐上升到2019年较安全等级，生态环境建设成效显著。

关键词：生态环境;分布式处理系统更换模型;熵值法;逼近理想解TOPSIS;甘肃省

中图分类号：X826 文献标识码：A 文章编号：1003-5168（2021）25-0133-04

Ecological Security Evaluation of Gansu Province Based on Entropy Weight-Approximate Ideal Solution TOPSIS Theory

ZHENG Lele

（School of Statistics， Lanzhou University of Finance and Economics， Lanzhou Gansu 730020）

Abstract： Ecological environmental protection and construction are an important part of the implementation of the regional ecological security strategy. Based on the 2012 to 2019 ecological environment status in Gansu Province， a comprehensive evaluation index system for ecological security is constructed based on the DPSR model， and the ecological environment status is comprehensively analyzed and studied based on the entropy method and the TOPSIS theory of approaching ideal solutions. The results show that： The comprehensive score of ecological safety in Gansu Province from 2012 to 2014 declined， and environmental pollution was serious; The comprehensive evaluation score of ecological safety from 2015 to 2019 showed an overall upward trend， and the overall ecological safety level gradually increased from the sensitivity level in 2012 to 2019 The annual safety level is relatively high. The ecological environment construction has achieved remarkable results.

Keywords： ecological environment;distributed processing system replacement model;entropy method;approximation to the ideal solution TOPSIS;Gansu Province

生態环境是影响人类生存与发展的水资源、土地资源、生物资源以及气候资源数量与质量的总称，是关系社会与经济可持续发展的重要系统[1]。党的十八大、十九大相继提出“加快生态文明体制改革，建设美丽中国”的发展战略，注重环境污染问题的合理解决[2]。甘肃省地处西北内陆，自然条件严酷，生态环境脆弱，是我国遭受沙漠化危害最严重的省份之一。研究其生态环境现状，对生态环境极为脆弱的甘肃省而言尤为重要，对其做出客观合理的生态评价，可为实现经济社会与自然环境协调发展提供依据。

目前，国内外学者对生态环境安全状况进行综合评估时，在评价对象、指标体系的构建和评价方法的选择上做了大量研究，将生态安全由定性研究逐渐转向定量研究。例如，WANG等[3]基于生态环境各方面的综合指数来综合衡量区域生态环境质量。……