中国县域人口空间分布格局研究

人口空间分布是人类活动在地球表层空间上的一种表现形式，也是人口地理学研究的核心问题。长期以来，受自然及人文两方面的影响，胡焕庸线成为中国人口空间分布差异的基线。本文以2010年中国县级行政区人口数据为基础，应用ArcGIS空间分析工具，定量分析2010年中国人口空间分布格局。通过分析各级人12密度空间分布图和人口密度剖面图可以发现，2010年中国县级行政区人口密度呈现东南高西北低的态势，人口密集区用接近20％的国土面积承载了接近80％的人口；东南-西北两部分人口比重为93.77：6.23，胡焕庸线仍然是2010年中国人口的地理分界线。

Study on Population Distribution Pattern at the County Level of China

Population distribution pattern is a form of expression of human activities in spatial system of earth surface layer, and is a core problem on population geography. With the influence of natural and human factors, Hu Huanyong Population Line has become the base line of China＇s population distribution pattern for a long time. With the spatial analysis tools of ArcGIS and the county-level census data of 2010 in China, This paper makes quantitative analysis on the population distri- bution pattern in China. By making the distribution map of population density and Profile Graphy group of population density perpendicular to Hu Huanyong Population Line,it is concluded that： a.） population densities at the county level of China show a trend of decreasing from southeast to northwest in 2010, and densely population areas carried nearly 80% population by using nearly 20% total land area of China; b.） ratios of population of southeast-northwest two parts of China in 2010 was 93.77：6.23, and Hu Huanyong Population Line is still the base line of China＇s population distribution pattern in 2010.