Assessment with Eco-economic Valuation of Sustainable Development of a Regional Ecosystem:A Case Study of Lingwu City, Ningxia Province
区域生态系统可持续发展的生态价值评价——以宁夏灵武市为例

Evaluation procedure is an essential component of environmental impact assessment (EIA). The central purpose of evaluation is to help people to make effective, efficient, and environmental sound decisions on the basis of the best obtainable information (D.L.Lawrence, 1993). Environmental impact is any change to the environment, whether adverse or beneficial, wholly or partially resulting from an organization's activities, products or services. In fact, the modern social-economic systems are driven by the po...