程海流域生态系统服务功能价值评估

以程海流域为研究对象，依据已有研究经验利用市场价值法、替代花费法、碳税法和造林成本法、成果参照法对程海流域生态系统服务功能价值进行评估。结果表明，程海流域总的生态系统服务功能价值为39.26亿元／a，其中，涵养水源价值最高，占总服务价值的32.0％，第二位是净化水体价值（占28％），第三位是调节气候价值（占16％），第四位是社会文化功能价值（占13％），其次分别是：生物资源价值、科教旅游价值、生物栖息地价值和提供水资源价值。

Evaluation of the Value of the Ecological Services Function of the Chenghai Lake Basin

The value of the ecological services function of the Chenghai Lake basin was evaluated using market val-ue method,replacement cost method,carbon tax method,reforestation cost method,and benefit transfer method. The results showed that the total value of the ecological services function of the Chenghai lake basin is 3.926 billion per year.The water conservation services value took the first place accounting for 32.0% of the total value.The second high is the value of the water purification （28%）.The climate -regulation value （1 6%）took the third place.The social and cultural value is the fourth high with 1 3% of the total value,follow by the biological re-sources value,education and tourism value,habitat value,and water supply value.