【摘要】 采用1990年以来全国和省级层面相对连续的草原普查和监测数据,构建能够衡量不同年度草地资源可持续利用状态变化的可比性草地面积指数和存栏系数,对我国草地可持续利用状态的变化态势和区域变化特征进行分析评价。分析结果表明,与1990年相比,目前全国和20个草原重点省份的可比性草地面积均有所下降,但同期这些地区的草食家畜的饲养量逐年增加。从2005年以来全国和各省份的可比性草地面积的变化看,随着政府各项草原生态治理工程的实施,大部分省份的可比性草地面积开始小幅增长,同期草食家畜的饲养量也在增加,说明这些省份的草地资源利用是趋于可持续方向;但同时也有一些省份的草地利用的可持续性在下降,需要各级政府关注。更多还原

【Abstract】 This paper constructed the comparable grassland area index and breeding stock coefficient by using the relatively continuous grassland census and monitoring data at the national and provincial levels since 1990, to measure the change of sustainable utilization of grassland resources in different years and evaluate the regional variation. The results showed that compared with 1990, while the comparable grassland area in the 20 key provinces across the country declined the amount of herbivorous livestock in these areas increased year by year over the same period. However, along with the implementation of various government steppe ecosystem management projects, the comparable grassland area and the amount of herbivorous livestock began a slight increase in most provinces since 2005. This indicated that the grassland resources in these provinces tend to be used sustainability. Meanwhile, there are also some provinces whose sustainability of grassland utilization declined and thus required enough attention of all levels of government.更多还原