基于能值理论的自然生态系统经济价值研究——以大巴山南坡雪宝山自然生态系统为例

Study on the Evaluation of Economical Value of Natural Eco-system Based on the Emergy Theory: A Case Study on the Xuebaoshan Natural Eco-system in the South Slope of the Daba Mountain

以能值理论为基础,以大巴山南坡雪宝山自然生态系统为研究对象,对自然生态系统的经济价值进行了研究.研究结果表明,雪宝山自然生态系统的经济价值约为2.64×107US$/a,其中物质产品和生态服务(不含生物多样性)的经济价值分别为2.26×107US$/a、3.67×106US$/a,生物多样性的经济价值约为7.75×109US$.这说明在评估自然生态系统的经济价值时,生态服务和生物多样性的经济价值不容忽视.

This paper primarily studies on economical value of natural eco-system based on the emergy theory and focusing on the Xuebaoshan natural eco-system in the south slope of the Daba Mountain. The study shows that the value of Xuebaoshan natural eco-system is about 2.64×10^7US$/a, in which the value of substantial product and ecological service （excludes biological diversity） respectively 26 ×10^7US$/a, 3.67 ×10^6US$/a. The value of biological diversity is about 7.75×10^9US$/a The research shows that the value of ecological service and biological diversity should not be ignored, while valuating the economical value of natural eco-system.