长江三角洲地区城市化与植被活动之间的时空相关性

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Abstract

Taking the delta of Yangtze River as an example,this paper studies the spatio-temporal correlation between urbanization and vegetation vigor using time series NDVI images derived from SPOT/Vegetation and statistical materials.Firstly,there are significantly negative correlation coefficients between vegetation vigor and population and GDP respectively,which almost dominate the urbanization level.Spatial correlation field between vegetation vigor with population and GDP respectively displays the correlation coefficients is stronger,where the population density or GDP is higher.And the correlation coefficients range from -1.0 to 0.5.Then,the method of panel data is employed to analyze the correlation and it's evolution between average vegetation activity and urbanization ratio at the grain level of prefectural-city.Result shows that the correlation coefficient is always negative,and the correlation is becoming stronger from 1998 to 2005,and these correlations can be estimated by linear functions.The negative correlation implies that there is not a win-win relationship between socioeconomic development and ecological environment on regional scale.At last three approaches are analyzed by which urbanization impacts vegetation vigor.

Key words： urbanization vegetation spatial correlation field the method of panel data the Delta of Yangtze River

Received: 25 February 2008

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	HAN Gui-feng
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HAN Gui-feng,XU Jian-hua. Spatio-temporal correlation between urbanization and vegetation vigor in the Delta of Yangtze River[J]. , 2008, 27(1): 1-5.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2008/V27/I1/1

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