中文摘要：

以云雾山国家级自然保护区典型草原生态系统为对象,利用能值理论以及生态系统服务单价表对研究区封育30年来系统生态资产价值及生态服务价值进行评估,以期对封育效益进行评价.结果表明：封育最初10年,草原生态系统生态价值显著上升,封育10～25年间获得的效益一直保持在较高水平,但在封育25年后呈现下降趋势.其中,在2002年,即封育20年后,生态资产价值与生态服务价值达到峰值,分别为9994.97万元和1.07亿元.总体而言,30年封育期总体价值均远高于封育前状况,说明为期30年的封育措施使得草原生态系统价值得到大幅增长,封育效益显著.

英文摘要：

In order to evaluate the value and benefit of enclosure for grassland,typical steppe ecosystem in Yunwu Mountain National Nature Reserve was selected as the study model using emergy theory and the schedule of ecosystem unit service price in this paper to evaluate the value of ecological asset system and ecological service over 30 years＇ enclosure.Results indicated that after enclosure,the ecological value increased sharply in the earliest 10 years,then it maintained a high value during 10 to 25 years,and it declined slowly after 25 years.According to these data,the value of ecological asset system and ecological service reached at the peaks of 99,949,700 yuan and 107,000,000 yuan respectively in 2002.In general,the total values of the 30 years＇ period after enclosure are much higher than before indicating that enclosure has greatly improved the value of ecological asset system and ecological service,and has a significant effect on grassland.