Evaluation of land eco-security based on matter element analysis

Focusing on the problems of information shield and subjectivity of the comprehensive index evaluation in China, this paper evaluated land eco-security with the theory of matter element analysis. After analyzed the concept of land eco-security, an index system was established based on Economy-Environment-Society framework and analytic hierarchy process (AHP). An integrated assessment model was constructed with the support of matter-element model. Then the assessment model was applied to Hebei Province. Consequently, the results indicated that the whole level of land eco-security in Hebei Province had been in improving trends that jumping to general security from critical security condition, so it was remarkable performance of environmental protection policy and measures in Hebei Province since 2004; and the indexes of cropland acreage per capita, consumption of farm pesticide and discharge standardized rate of industrial waste water were key factors limiting the level of land eco-security in Hebei Province. It is concluded that the matter element model can reveal different information of every single index, and matter element analysis is suitable for evaluating land eco-security.