吉首大学学报（自然科学版）2016，Vol.37Issue(4)：40-44,5.DOI:10.3969/j.cnki.jdxb.2016.04.009
基于熵权法的南县土地生态安全评价
Ecological Security Evaluation of Land in Nan County Based on Entropy
摘要
Abstract
The system of evaluating ecological security of land in terms of pressure ,state ,and response is constructed based on PSR model .T hen the entropy is used to evaluate the ecological security of land in Nan county from 2009 to 2013 .The results show that the land ecological security in this county deteriora‐ted from middle insecure to insecure .As for each subsystem ,the pressure showed a gradual upward trend ,but it still remained insecure ;the state system and response system were all on a declining trend from insecure state to very insecure state .The main sub‐system that influences the land ecological securi‐ty is response .The influential factors include urbanization ,grain output ,application of chemical fertilizer , soil and water conservation ,the proportion of the tertiary industry ,investment in environmental protec‐tion ,and industrial wastewater emission .关键词
土地生态安全/评价/PSR模型/熵权法/南县Key words
ecological security of land/evaluation/PSR model/entropy/Nan County分类
天文与地球科学引用本文复制引用
雷艳锦,帅红..基于熵权法的南县土地生态安全评价[J].吉首大学学报（自然科学版）,2016,37(4):40-44,5.基金项目
湖南省教育厅科学研究青年资助项目 （）
