Evaluation of Land Use System Health Based on GIS in Songnen High Plains: A Case of Bayan County of Heilongjiang Province

The health of land use system is the fundamental guarantee to realize the sustainable utilization of land resources. This article takes Bayan County, Heilongjiang province as the research area, and based on the Landsat TM / ETM + remote sensing image and statistical data in 2009. Constructing evaluation index of land use system health system from three aspects ,that the structural index, function index, efficiency index ,interpreting the image to extract relevant information by using remote sensing and GIS technology, using the comprehensive parameter evaluation method, calculate the land use system health index of Bayan county and modify the index by BP neural network evaluation method, to take clustering analysis on the status of land use system health in the research area. The results showed: In general, there is certain difference of the land use system health among the 18 townships and towns in Bayan County. The health of land use system in a state of health: Hongguang township, Xinglong town, Fengle township, Xiji town and rural Songhuajiang town; in the sub-health state: Wanfa town, Tianzeng town, Dexiang township, Heishan town, Wa xing town, Longmiao town, Huashan township, Zhendong town, Longquan town and Bayan town; in a state of unhealth:Shanhou township, Bayangang town and Fujiang township.