| As an emerging branch of geography, health geography mainly research at the spatial and temporal changes in the level of longevity.Life is a comprehensive reflection of individual health, longevity level can reflect the overall health level of the population.It is significant for researching the longevity situation of regional population to promote the sustainable health development.The evolution of researching regional population longevity level is a dynamic development process which involves both time and space differences. Southern China is a hot area of China Longevity,exploring the spatial and temporal evolution of region’s population longevity level and its influencing factors is conform to the development tendency of the world and china longevity research, and help to further reveal the longevity characteristics of southern China, then promote the progress of Chinese regional longevity research.In this paper, we choose 20 years from 1990 to 2010 as the time section,four provinces in Southern China including fujian, guangdong, guangxi and hainan as the research scope, data of the fourth (1990), fifth (2000),sixth(2010) National Population Census as basis,the Provincial scale, cities scale and county scale grade as the space classification arrangement. Using Center of gravity mobile,Global automation related analysisglobal,Anselin Local Moran’s,Weighted summation,Variable correlation analysis method,discussed the space-time evolution of longevity and population levels in south China and its influence factors.The results prove that:(1)From the time point of view,the Centenarians population ratio,Aging level and Life expectancy in Southern China are constantly improving, and the growth rate continues to accelerate since 1990.The gravity of Centenarians population moved from wuzhou to zhaoqing, then to qingyuan city, keeping eastward migration trend,and it is stable in the pearl river delta plain in guangdong,and GuiZhong region in guangxi provinces,as a whole by east but little changed in fujian province,stable in tunchang county territory in hainan province.This trend subject to the discretion of land carrying capacity, reflecting the level of human longevity.(2)From the space point of view,comprehensive longevity level is consistent with distribution of various indicators, they showed a high concentration in space.There exist a decreasing trend from the coastal plain to the inland mountains.YueGuiMin region’s Provincial difference is obvious, ladder shaped from the west to the east.From the city scale,among the 9 top longevity city, guangxi got 5, guangdong got 4, and fujian got none.From the county scale,there exist a coastal longevity stripe formed by many high value counties.The low level counties and cities of Longevity mainly concentrated in the north and west mountainous area of fujian and guangxi provinces.The comprehensive longevity level of hainan province keep increasing,and there exist a decreasing trend from the coastal plains to the middle mountain region of the island(3)There exist a significant negative correlation between the regional average elevation and the comprehensive level of longevity,and the same to the average gradientOn the contrary,the average annual temperature,the average annual precipitation,and the GDP per capita keep a positive correlation with the comprehensive level of longevity.Natural factors are the dominant factors which affecting longevity in Southern China.High value longevity counties tend to gather at the low altitude area, the gentle slope area,and the plain area with good moisture and heat conditions. |
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