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水土流失的驱动因子及其作用程度表现出一定的区域差异。三峡库区是我国典型的生态脆弱区,水土流失是本区重要的生态环境问题。因此,揭示本区域水土流失变化的主要自然和社会经济驱动力的基本特征具有重要意义。本文借助社会经济统计数据、国土数据以及其他辅助数据,运用统计分析方法,选取人口、经济发展、土地利用、农业发展4个层面的社会经济因子,分别分析了各类社会经济因子对水土流失的驱动机制。结果表明,人口压力和农业发展仍然是区域水土流失的主要驱动力,经济发展和土地利用方式也对本区域的水土流失面积和强度产生着重要影响。水土流失总面积的社会经济驱动机制较为复杂,而高强度水土流失的社会经济驱动因子的特征更为突出。受数据获取的限制本文研究还有待进一步深入,但本文仍在一定程度上能够为本区域水土流失的防治提供一定参考与依据。
The driving forces and the extent of their role in soil and water loss show some regional differences. The Three Gorges Reservoir Area is a typical ecologically fragile area in China. Soil and water loss is an important ecological and environmental problem in this area. Therefore, revealing the basic characteristics of the major natural and socio-economic drivers of soil and water loss changes in the region is of great significance. Based on the socio-economic statistics, land-use data and other ancillary data, this paper selects the socio-economic factors of population, economic development, land use and agricultural development from the aspects of statistics and analysis, and analyzes the influences of various socio-economic factors on water and soil loss Drive mechanism. The results show that population pressure and agricultural development are still the main driving forces for regional soil and water loss. Economic development and land use patterns also have an important impact on the area and intensity of soil erosion in the region. The socio-economic driving mechanism of the total area of soil erosion is complicated, while the socio-economic drivers of high-intensity soil erosion are more prominent. Limited by Data Acquisition The research in this paper needs to be further studied, but this paper still can provide some reference and basis for the prevention and control of soil and water loss in the region to a certain extent.