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[1]HOU Yule,LI Gang,QU Junfeng,et al.Evaluation of Land Eco-security Based on Improved Grey Target Model—A Case of Xuzhou City, Jiangsu Province[J].Research of Soil and Water Conservation,2017,24(01):285-290.

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Evaluation of Land Eco-security Based on Improved Grey Target Model—A Case of Xuzhou City, Jiangsu Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 01 Page number: 285-290 Column: Public date: 2017-02-28

Title:: Evaluation of Land Eco-security Based on Improved Grey Target Model—A Case of Xuzhou City, Jiangsu Province

Author(s):: HOU Yule¹, LI Gang¹, QU Junfeng^1,2, WANG Kun¹, LIU Shu¹, GE Mengyu¹; 1. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;
2. Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China

Keywords:: land eco-security; grey target model; approaching degree; Xuzhou City

CLC:: X826

DOI:: -

Abstract:: In order to solve the problem of the limitations of evaluation standards in application, grey target theory was introduced to evaluate land eco-security. To eliminate the unreasonable influence of equal-weighted in traditional grey target model, index weights were introduced to improve the traditional gray target model. Then, an improved gray target model based on entropy weight was proposed and used to evaluate land eco-security of Xuzhou City. The results show that, from 2003 to 2012, integrated approaching degree of land eco-security increased from 0.665 3 to 0.943 5 and security level shifted from unsafe to ideal security level. The land eco-security presemts the good trend. But the social eco-security has been fluctuated around the critical safety level and exists security risk. Compared with the comprehensive index method, the improved grey target model has similar trends about approaching degrees and safety levels. The improved grey target model for evaluation of land eco-security is feasible, and can avoid the limitations of land eco-security evaluation standards and has a certain application value.

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