Evaluation and Changing Analysis of Ecological Assets in Yingjing County

In this paper,taking Yingjing County as an example,its ecological assets amount was measured by means of ESV method based on the aerial remote sensing images in 1990 and 2015.The results showed that the ecological assets amount continuosly increased;The contribution rate of service functions was relatively average; Ecological assets contribution rate of different land use types was bigger;Cultivated land resource had not been well protected,which led to the narrowing of the food source.In the future,the rational development and utilization of land,and protection of cultivated land resources would be needed for promoting the ecological assets value.