陕西水源区生态系统的生态服务价值分析

Analysis on ecological value of ecosystem in water source area

目的分析陕西水源区生态系统的服务价值。方法运用环境经济学的理论与方法,选择陕西水源区为研究对象,定量计算了当地生态环境系统所产生的保持和改良土壤、保护和涵养水源、固碳供氧及维持景观等生态服务价值。结果陕西水源区生态环境建设所产生的保土固肥价值为52.59亿元/a,水资源的生态价值为198.89亿元,生态建设的维持景观价值为12.57亿元/a,固碳供氧价值为92.45亿元/a。陕西水源区生态系统的生态服务总价值为356.5亿元/a。结论南水北调中线水源区的生态环境建设可以产生巨大的生态服务价值。

Aim Study on the ecological service value of ecosystem in Water Source Area. Methods Using the theory and methods of environmental economics, select Shannxi water source area as the study object, and calculate the value of keeping and amending the soil quality, protect and restraint water sources, absorb the carbon and supplying oxygen, maintain the sight. And then establish the eco-compensation quantity calculated models about the factors of water quality. Results The ecological construction can produce 52. 59 × 10^8yuan/a in keeping the soil and fertilizer, the value of restraint the water source is 198.89 × 10^8yuan, the value of keeping the sight is 12. 57× 10^8yuan/a, and the value of absorbing the carbon and supplying oxygen is 92. 45× 10^8yuan/a. In the basic ecocompensation quantity in water source area, the value of the ecological service is 356. 49 × 10^8yuan/a. Conclusion The results can give some beneficial advice in the calculating of water resources ecological compensation for Shaanxi watershed of Middle Route Project of the South-to-North Water Diversion.