中文摘要：

对新疆草地生态系统的主要功能进行调查，重点估算了新疆草地生态系统不同服务功能和类型的生态价值。计算结果显示．新疆草地生态系统2003年提供的总服务价值为71．32×10^8美元。从草地各类功能价值看．草地的经济功能价值仅为21.26％．远低于草地的生态价值。从新疆草地类型看．温性荒漠草原、温性荒漠和低平地草甸是新疆草地的主体类型．占58％以上．而其贡献率为43．17％；低平地草甸提供的生态服务价值最高．占30．20％；沼泽和温性草甸草原虽然单位面积服务价值很高．但在草地生态系统中所占的地位很低。这些结论体现了新疆草地生态系统的特殊性及开发和保护的潜力。

英文摘要：

Based on an investigation of the value of the grassland ecological system in Xinjiang, this paper puts emphasis on evaluating the services value of the grassland ecosystem on the basis of the different functions and grassland types. The results showed that the services value of the grassland ecosystem of Xinjang was 71.32×10^8 $ in 2003. The main types of grassland ecosystem in Xinjiang were the humoral-desert grasslands and lower-fiat meadows which occupy more than 58% of the area while their services value was just 43.17%. The services value of the lower-flat meadow was 30.2%, the highest of all the grassland types. Although the services value of swampland and temperate grasslands are high per unit area, their value has little importance to the grassland ecosystem in Xinjiang due to their small area. These results show the characteristics of the grassland ecological system, and the potential ability to both exploit and to protect it.