基于地层地形条件的贵州省人口空间分布及变化

Spatial distribution and change of population in Guizhou based on stratigraphic and topographic conditions

基于地层地形条件,分析贵州省2005年—2010年人口空间分布及变化。结果表明:1)2005年—2010年,贵州省人口有明显下降,人口总数由3925.09万人减至3471.56万人,人口密度由223人/km^2下降到197人/km^2。人口分布呈现西密东疏的特征。2)不同地层的人口分布与变化不同。新生界人口最密集,元古界人口最稀疏。人口密度由大到小依次排序为新生界>中生界>古生界>元古界。新生界、中生界、古生界和元古界地层的人口均有减少,减少率分别为6.18%、7.28%、16.5%和30.89%。3)不同地形的人口分布与变化不同,盆地人口分布最为密集,山地人口分布最为稀疏。人口密度由大到小依次排序为盆地>台地>丘陵>山地。除盆地人口增加外(增长率为25.70%),台地、丘陵、山地的人口均有减少,减少率分别为15.91%、6.94%、19.14%。研究成果可为贵州制定工业化城镇化政策提供参考。

Based on stratigraphic and topographic conditions,we analyzed the spatial distribution and change of population in Guizhou from 2005 to 2010. The results showed that,from 2005 to 2010,the population of Guizhou decreased significantly,from 39. 25 million to 34. 72 million. The population density decreased from 223 per/km^2 to197 per/km^2,with the distribution dense in the west and sparse in the east. The distribution and change of population was different in different strata. The population density in Cenozoic was maximum,and that in Proterozoic was minimum. The population density of all strata ranked as below： Cenozoic〉Mesozoic〉Paleozoic〉Proterozoic.The population of all four strata decreased and the decreasing rates were 6. 18 %（ Cenozoic）,7. 28 %（ Mesozoic）,16. 5 %（ Paleozoic） and 30. 89 %（ Proterozoic）. The distribution and change of population was different in different landform. The population density in basin was maximum,and that in mountain was minimum. The population density of all landforms ranked as below： basin 〉tableland 〉hill 〉mountain. The population of tableland,hill and mountain decreased,and the decreasing rates were 15. 91 %,6. 94 % and 19. 14 % respectively. Meanwhile,the population of basin increased,with an increasing rate of 25. 70 %. The results can provide a reference for industrialization and urbanization policy making.