基于GIS方法的沿海城市人口变动及空间分布格局研究

经济社会越发展,人类对海洋的开发力度越大,同时,沿海地区聚集的人口也越多。21世纪以来,沿海城市人口规模及其变化的市别差异较大,个别城市出现了人口自然负增长的态势,总体上沿海城市人口密度显著高于内陆城市,人口迁移流入集中于24个沿海城市,约占沿海城市总数的一半。借助GIS技术,应用空间聚类的方法分析,结果表明:21世纪以来沿海城市人口重心向西南略微移动;人口分布趋于均匀,从人口密度方面看,2010年较2000年在空间上人口聚集程度有所下降。提出了优化沿海地区城市人口分布的对策建议。

Population Change and Its Spatial Distribution Patterns of Coastal Cities Based on GIS

The more advanced economy and society,the larger development intensity on ocean,meanwhile,the more population gathered in coastal areas.There have been obvious differences in population and its change among coastal cities since 2000.Population in a few coastal cities have been growing negatively.Population density in coastal cities is higher than that in inland cities.About 25,half of all the coastal cities,are the places for population influx.By the means of GIS and spatial statistics,this article show that the population gravity has moved to the southwest slightly,and population distribution trends to uniform.But the pattern of population density is still clustered in 2010,especially in some cities.Countermeasures are put forward in the last part of the paper.