Abstract:

Healthy land eco-system is a decisive factor for human health and economic development. It is particularly important to evaluate the region land ecology security following the ecological law as the humans on land use intensity and range increasingly. Taking the Yanjin county as the case which is in the plain, the evaluation index system of region land eco-security was established. The index system includes 17 indexes based on the P-A-R model framework in this research. The land ecology security value during 2006-2008 year was calculated using the analytical hierarchy principle and the security matrix of land ecology. The results indicated that the main factors which restrict regional land eco-security in plain including: environmental expenditure of GDP, pesticides, arable land proportion and population density, etc. The security status of land ecology was ‘sensitive grade’ for the last 3 years, while the land eco-system function gradually developed toward a favorable trend. Finally, some suggestions were propounded to protect land and realize its sustainable use.