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| The variation contrastive analysis of economic gravity center and urban residential pollution gravity center of China: 1998-2008 |
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Abstract There is a strong correlation between urban residential pollution and social-economic development in China. The method of gravity center shift is adopt to examine the shift of both economic gravity center and pollution gravity center in this study. Firstly, statistical data between 1998 and 2008 were collected from statistical yearbooks, with domestic sewage discharge, discharge of COD, and discharge of NH3-N for pollution factors, and GDP, population, and disposable income of residents for economic factors. Secondly, regional pollution gravity center and economic gravity center were calculated accordingly. Their dynamics and spatial relationship were illustrated and compared in terms of distance of shift, deviation of shift, comparison of pathway, and their spatial relationship. The results show an obvious deviation for different gravity centers. In longitude, it shows a negative correlation between the gravity center of population with gravity center of domestic sewage discharge, discharge of COD, and discharge of NH3-N, a positive correlation between GDP and COD, NH3-N, and a negative correlation between disposable income of residents and gravity center of urban point-source residential pollution. In latitude, the social and economic gravity center shows a positive correlation with gravity center of COD, and NH3-N. The gravity center of urban point-source residential pollution exhibits a negative correlation with gravity center of GDP and disposable income of residents, and a positive correlation with gravity center of population.
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Received: 11 October 2013
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. [J]. CHINA ENVIRONMENTAL SCIENCECE, 2004, 24(5): 0-0. |
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