基于生态足迹的藏北那曲县草地生态承载力分析  

Analysis on Ecological Capacity of Grasslands in Nagchu County Based on Ecological Footprint

作　　者：赵玉红[1,2] 敬久旺[3] 魏学红[1] 

机构地区：[1]西藏农牧学院动物科学学院,西藏林芝860000 [2]西藏林芝森林生态系统定位研究站,西藏林芝860000 [3]西藏农牧学院公共教学部,西藏林芝860000

出　　处：《贵州农业科学》2011年第9期140-143,共4页Guizhou Agricultural Sciences

基　　金：国家自然基金"西藏高原退化草地自然恢复潜力研究"(30860061);教育部青年基金"藏北牧民人与自然和谐相处观念研究"(10XZJC850002);西藏大学农牧学院211工程重点学科高原生态学建设项目[XZA-211(3)-071012-01]

摘　　要：为合理规划藏北草地,有效保护和开发利用草地资源,保证草地资源的可持续发展,基于生态足迹模型,计算西藏北部那曲县高寒草地2009年有效物质消费量与有效可利用生态生产性土地面积,分析其生态足迹和生态承载力。结果表明:那曲县2009年人均生态足迹为1.484634hm2,人均生态承载力为0.508531hm2,人均生态赤字为0.976103hm2,赤字比例达65.75%;人均生态足迹中,对化石燃料和耕地的需求最大,其次为林地、草地、水域、建筑用地。认为,以那曲县为代表的藏北草原区生态承载力较低。The efficient consumption amount of products and efficient areas of ecological productive land of Qinghai-Tibetan Plateau in 2009 were calculated and the ecological footprint and ecological carrying capacity of the Nagchu county in Qinghai-Tibetan Plateau were analyzed based on ecological footprint model to rationally plan for Qinghai-Tibetan Plateau,and guard the sustainable development of grassland resources by effectively protecting,developing and utilizing them.The results showed that the ecological footprint of Nagchu county was 1.484 634 hm2 per capita,the ecological capacity was 0.508 531 hm2 per capita and the ecological deficit 0.976 103 hm2 per capita,which generally accounted for 65.75% of the ecological footprint.Concerning the ecological footprint per capita,the demand for farm land and fossil fuel production land was the largest,followed by forest land,grass land,water area and construction land.The ecological capacity of Qinghai-Tibetan Plateau was low in Nagchu county.

关 键 词：生态足迹 生态承载力 生态盈余 可持续发展 草地 藏北那曲县 

分 类 号：S812[农业科学—草业科学] F303.4[农业科学—畜牧学]