| Based on the Bohai sea provinces as the study area,including five provincial ad ministrative units:Beijing,Tianjin,Hebei province,Shandong province and Liaoning province.In 20 years span for 1990-2010,based on the fouth census datas?the fifth cens us datas and sixth census datas,and the use of three indicators including centenarians?the elderly levels and life expectancy of the population of three single longevity index,comprehensive level of district longevity,and the evaluation of regional level of long evity,to make a rearch on the spatial-temporal evolution of the Bohai sea provinces 1 ongevity levels and influencing factors.This tudy use ArcGIS SPSS?Microsoft Excel and other software for data processing and statistical analysis,analyzing the influencing factors of regional longevity levels.Results show that:(1)The density and ratio of centenarians in the Bohai sea provinces are on the rise,and showed obvious differences between the high value areas and the low value areas,the high value areas are clustered in the plains foothills of the Bohai bay,such as Beijing,Jiaodong peninsula of Shandong province,Dalian city of the Liaodong peninsula.(2)The population of older people and the elderly levels of the Bohai sea provinces are significantly faster than other age groups,and all provincial administrative units have entered an aging society.And showed obvious differences in the study area,Shandong province is the highest area,especially in the jiaodong peninsula and the southwest area,Beijing is the higher area,the lowest area is Hebei province.(3)In the past 20 years,the life expectancy in the Bohai sea provinces was higher than that of the national level in the same period,and the increase was faster than the national level in the same period.The life expectancy of the population showed obvious differences,the life expectancy of Beijing and Tianjin is the highest area,followed by Liaoning province and Shandong province,the lowest area is Hebei province,in the provinces,showing a gradually decreasing trend from the north area to the south area.(4)The comprehensive level of longevity in the Bohai sea provinces has been reduced to the inland area by the foothills,and the south area is higher than the north area,the east area is higher than the west area.Due to the longevity indicators in the forefront,Beijing is the comprehensive level of the highest longevity,the Tianjin is lower,and showing a gradually decreasing trend from the north area to the south area in the provinces,which is basically consistent with centenarians?the elderly levels and life expectancy.(5)The effects of longevity in the Bohai sea provinces include natural and cultural factors.There exist a significant negative correlation between the average temperature and the comprehensive level of longevity,the average sunshine time and the comprehensive level of longevity,the regional elevation and the compre hensive level of longevity.On the contrary,the years of average rainfall,the years of average relative humidity,the regional slope,the GDP per capita,the urban disposable income per capita,the net income of rural residents per capita,the number of health institutions,the health institutions personnel Numbers and health agencies beds show different degrees of positive correlation with the comprehensive level of longevity.So,comfortable and livable environment,the moderate and unhumid climate,the flat mound of moderate incline are fertile ground for the growth of regional longevity,urbanization,medical and technical conditions are accelerated,in addition,a good lifestyle of longevity can also help prolong life. |
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