生态补偿标准的确定是生态补偿机制建立的难点和重点.根据1987—2007年甘南州气象站和2007年甘南藏族自治州的社会调查资料,采用最小数据方法、社会调查法、降水储水量法对草地生态系统服务的供给曲线进行模拟.结果表明:2007年,甘南藏族自治州年实施生态补偿的机会成本为503.6 yuan.hm-2,草地生态系统提供的单位水源涵养量为1110.7m3.hm-2,补偿标准为788.6 yuan.hm-2,草地生态系统提供的总水源涵养量为2.56×109m3. According to the social survey data of Gannan Prefecture Meteorological Station from 1987 to 2007 and Gannan Tibetan Autonomous Prefecture in 2007, the minimum data method, social investigation method and precipitation storage method were used to evaluate the compensation standard of grassland Ecosystem services.The results show that in 2007, the opportunity cost of implementing ecological compensation in Gannan Tibetan Autonomous Prefecture was 503.6 yuan.hm-2, that of grassland ecosystem was 1110.7m3.hm-2, The compensation standard is 788.6 yuan.hm-2, and the total water conservation provided by the grassland ecosystem is 2.56 × 109 m3.