禁牧对典型草原生态系统服务功能影响的价值评价  

Evaluation on the impact of non-grazing on the services of typical steppe ecosystems

作　　者：许晴[1] 许中旗[1] 王英舜[2] 

机构地区：[1]河北农业大学,河北保定071000 [2]内蒙古锡林浩特国家气候观象台,内蒙古锡林浩特026000

出　　处：《草业科学》2012年第3期364-369,共6页Pratacultural Science

基　　金：国家自然科学基金重点项目(30230090)

摘　　要：为了定量评价禁牧对典型草原生态系统的影响,采用生态系统服务功能经济价值评价方法对放牧及禁牧时间不同(2、7和17年)的典型草原生态系统服务功能进行了评价。结果表明,禁牧可以显著提高典型草原生态系统物质生产、碳吸收、氧气释放及物质循环功能的价值量;物质生产功能价值量随禁牧时间的增加而增加,以禁牧17年典型草原为最高;碳吸收、氧气释放及物质循环功能的价值量则以禁牧2年的典型草原为最高。禁牧可以显著提高典型草原的生态系统服务功能,但长期禁牧不利于典型草原生态系统服务功能的提高和维持。In order to understand the impact of non-grazing on the services of typical steppe ecosystems quantitatively,the services of typical steppes under grazing and non-grazing with different periods（2 years,7 years and 17 years） were evaluated.The result showed that non-grazing could raise the valuation of the services of typical steppe ecosystems,such as production,carbon sequestration,oxygen release,nutrient circle.The evaluation of production of typical steppes increased as the period of non-grazing increased,and that of the typical steppes with 17 years of non-grazing was highest.The evaluation of others,such as carbon sequestration,oxygen release,nutrient circle,is highest for typical steppes with 2 years of non-grazing.Non-grazing could improve services of typical steppe ecosystems,but non-grazing for a long time is not conducive to the improvement and maintenance of services of typical steppe ecosystems.

关 键 词：禁牧 典型草原 生态系统服务 价值评价 

分 类 号：S812.2[农业科学—草业科学]