基于 RS 和 GIS 的班戈县草地生态承载力动态变化分析
On Dynamics Analysis of Ecological Capacity of Grassland in Bange County Based on RS and GIS
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摘要: 该文利用RS与GIS技术获取西藏班戈县草地退化数据，并结合生态足迹模型分析了班戈县草地生态承载力动态变化．结果表明：班戈县草地退化数量和退化程度引起了生态承载力的变化．从1990到2009年，生态承载力减少了8?39万hm2．从动态变化看，1990年到2000年，草地生态承载力呈下降趋势，2000年到2009年，草地生态承载力呈上升趋势．Abstract: The data of grassland degradation in Bange County was got on the basis of RS technique and GIS technique .The ecological capacity has been calculated and analyzed by means of the ecological footprint model .The results show that the change of ecological capacity was caused by quantity and degree of grass_land degradation in Bange County .The 83 900 hm2 ecological capacity lost from 1990 to 2009 .The grass_land ecological capacity tended to descend from 1990 to 2000 and ascend from 2000 to 2009 .
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