摘要
纵的范围峡区域(LRGR ) 是为在中国的生物多样性保护的一个关键区域。另外它为富有的资源，复杂环境和脆弱的生态系统是著名的。在 LRGR，在生态的安全级别和生态的能力有大差别。人的骚乱和生态系统变化是重要的。分析生态的能力的空间与时间的变化具有重要性让管理实现生态的管理。作为一个盒子在 LRGR 核心区域拿县，在 GIS 的帮助下，我们使用了生态的脚印方法在二 scalesthe 学习生态的能力的空间与时间的变化城市的更大的规模和县的更小的规模。然后，我们讨论了由主要部件分析(PCA ) 影响了生态的能力的开车因素。结果证明生态的脚印，生态的能力和生态的安全级别在 LRGR 从县清楚地变化了到县。地区性的生态的能力从北方逐年减少了，南方到 LRGR 的中间。根据驱动力的分析，人均的生态的能力与人口， GDP，和另外的开车因素有否定关联。在这些因素之中，社会经济和人口在生态的能力上有很重要的影响。并且驾驶因素的空间变化决定了生态的能力的空间与时间的变化。
The Longitudinal range-gorge region （LRGR） is a key region for biodiversity protection in China. Also it is notable for rich resources, complex environment and vulnerable ecosystem. In the LRGR, there are great differences in ecological security level and ecological capacity. Human disturbance and ecosystem changes are significant. Analyzing the spatiotemporal changes of ecological capacity is of importance for government to implement ecological management. Taking the counties in the LRGR core region as a case, with the help of GIS, we used ecological footprint method to study the spatiotemporal change of ecological capacity at two scales--the larger scale of city and smaller scale of county. Then we discussed the driving factors that affected ecological capacity by principal component analysis （PCA）. The results showed that the ecological footprint, ecological capacity and ecological security level varied distinctly from county to county in the LRGR. Regional ecological capacity decreased year by year from the north, south to the middle of LRGR. According to the analysis of driving forces, per capita ecological capacity had a negative correlation with population, GDP, and other driving factors. Among these factors, social economy and population had very significant impacts on ecological capacity. And the spatial variation of driving factors determined the spatiotemporal change of ecological capacity.
基金
Supported by National Basic Research Program of China(Grant No.2003CB415104)
the National Natural Science Foundation of China(Grant No.40501067)
