南水北调东线水源地保护区生态建设的生态经济效益评估

ECO-ECONOMY BENEFIT EVALUATION OF ECOLOGICAL CONSTRUCTION IN THE WATER RESOURCE PROTECTION ZONE FOR EASTERN SOUTH-TO-NORTH WATER TRANSFER PROJECT

生态服务功能价值评估可以为生态建设工程效益的定量评价提供借鉴。从生态服务功能价值和生态建设成本的角度,定量评估规划建设的南水北调东线水源地保护区一期生态建设工程的预期生态经济效益。以生态服务功能价值评估的现有成果为手段,并结合实际状况进行适当修正后,根据土地利用类型的改变评估得到一期生态工程实施后每年所增加的生态系统服务功能价值为12 816万元,结合区域社会经济发展状况引入生态价值发展阶段系数调整后的结果为4 229万元;从机会成本的角度分析得到一期生态建设工程的年成本为793万元;生态建设工程实施后每年增加的生态服务功能价值调整值为生态建设年成本的5.3倍,表明一期生态建设的预期生态经济效益非常显著。

Evaluation of ecosystem service＇s value could provide some reference for quantitative benefit analysis of ecological project. The eco-ecological benefit of the planned first stage ecological project in the water source protection zone for eastern route of South-to-north Water Transfer Project was quantitatively evaluated in the paper from the angle of ecological service value and construction cost. Based on the well-accepted quantitative evaluation methods of ecosystem service＇s value, and according to the land use change, the ecological service＇s value annually added of the ecological construction project was evaluated about 128 160 000 Yuan, and the adjusted result was 4 229 000 Yuan according to the adjustment of regional development phase coefficient. The annual cost of the ecological construction project was about 7 930 000 Yuan on the basis of opportunity analysis. Results showed that the anticipated eco-economic benefit of the project was obvious, and the adjusted ecosystem service＇s value added annually was 5.3 times larger than the cost.