土地利用尤其是城镇用地及农村居民点变化是引起区内人口分布变化的重要因素，此外自然条件、政策、经济、三峡工程等对区内人口分布变化也有一定影响。
We find out that except natural environment, policy and economy and so on, land use is the main factor especially for urban land use and rural residential land use.
分析了各区的农村居民点用地空间分布特征及各乡镇的农村居民点时间动态变化特征。
The central villages are determined by analyzing the land spatial distribution and temporal dynamic change characteristics of rural settlements in different regions and different villages and towns.
此项研究可以较好地了解三峡库区农村居民点用地结构与变化规律。
The conclusion is that the research can understand the structure and changing traits of rural residential areas.
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