Study on Evaluation for Regional Ecological Security of Cultivated Land Based on Information Entropy and Matter-element Model

• 1、Land and Resources School, Agricultural University of Hebei,Baoding 071001

Abstract：The ecological security of cultivated land is related to the regional sustainable development and food security. Feixiang Country in Hebei Province was chosen as study area in this paper. Considering influence of cultivated land ecological security of natural factors, economic factors and social factors,a regional cultivated land ecological security based on entropy weight and extensional theory was built.The method was adopted to quantitatively evaluate and analyze ecological security of cultivated land in Feixiang Country from 2001 to 2010.The sesults show that the cultivated land ecological security situation could be divided into three states:the cultivated land ecological security was at a safe state in 2001-2003; the cultivated land ecological security in 2004-2007 was declined year by year,from relatively safe state to unsafe state; the cultivated land ecological security has a certain increase during 2008-2010. The model was practical and scientific evaluation method described the evaluation process of eco-security of cultivated land.Therefore,the matter-element extension model is valuable in land eco-security assessment.

Keywords： cultivated land ecological security,entropy weight ,matter-element model,Feixiang Country