基于熵权物元模型的土地生态安全评价——重庆市江津区实证

摘要/Abstract

摘要： 土地生态安全评价是区域生态文明建设以及维护区域生态安全与社会经济可持续发展的基础工作，近年来受到广泛关注。通过构建基于熵权物元模型的土地生态安全评价体系，并以重庆市江津区为案例开展实证研究。结果表明：（1）江津区土地生态安全形式总体好转，但土地生态安全整体情况较差，还需要进行大力整治。（2）江津区各乡镇土地生态安全等级具有明显的区域差异性。（3）重点对土地生态安全状况差的区域进行整改，土地生态安全高的区域需继续保持生态优先的政策导向是下一步政府工作的重点。

关键词: 土地利用, 生态安全, 熵权法, 物元模型, 江津区

Abstract: The evaluation of land ecological security is one of the basic works for ecological civilization construction.It helps maintain the regional ecological security and sustainable development of social economy and thus has been attracted wide attention in recent years.Taking Jiangjin District,Chongqing as the study area,this paper evaluated its land ecological security based on the entropy weighted matter-element model.The results showed that the land ecological security in Jiangjin District in 2011 and 2012 was "critical secure" and it became "secure" during the time period from 2013 to 2015.The overall land ecological security has been improving in the district and it is changing towards "securer".However there is a significant spatial difference of land ecological security in Jiangjin District with its north-east area better than the other parts,and its south and middle area,the worst.The rural per capita net income,the proportion of ecological infrastructure land,the proportion of regional development coefficient and the arable land per capita were the main factors of the land ecological security in Jiangjin District.It was suggested in this paper for the local government to keep executing the ecology first policy in the regions with high ecological security and to conduct the rectification and reforming measurements to improve the ecological security in those regions where the security level needs to be enhanced.

Key words: land use, eco-security, entropy weighted matter-element model, Jiangjin District

中图分类号:

F301

陈伊多, 杨庆媛, 杨人豪, 曾黎. 基于熵权物元模型的土地生态安全评价——重庆市江津区实证[J]. 干旱区地理, 2018, 41(1): 185-194.

CHEN Yi-duo, YANG Qing-yuan, YANG Ren-hao, ZENG Li. Evaluation of land ecological security based on entropy weighted matter-element model:a case of Jiangjin District,Chongqing[J]. 干旱区地理, 2018, 41(1): 185-194.

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