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选取1995、2000、2008年为时间变化单元,以江苏省从北到南的20县市区域为空间变化单元,建立植被覆盖度、水土流失量模型,定量分析江苏省植被覆盖度和水土流失量的时空变化特征。结果表明:(1)江苏省的区域植被覆盖度时间变异较大,随时间的推移总体呈上升的趋势,其中新沂的植被覆盖度最高,扬中的植被覆盖度变化最大。(2)20个县市区域的水土流失量随时间的推移总体上有所增加,而如皋、通州、海门、东台、扬中、泰兴和兴化等区域的土流流失状况有所改善。
The time varying units of 1995, 2000 and 2008 were chosen as the spatial variation units in 20 counties from north to south in Jiangsu Province. Models of vegetation coverage and soil erosion were established to quantitatively analyze the vegetation coverage and soil erosion in Jiangsu Province The temporal and spatial variation characteristics. The results showed that: (1) The time variation of regional vegetation coverage in Jiangsu Province was relatively large, with an overall upward trend over time. Among them, the vegetation coverage of Xinyi was the highest, and that of Yangzhong was the largest. (2) The amount of soil and water loss in 20 counties and cities generally increased over time, while the soil erosion in some areas such as Rugao, Tongzhou, Haimen, Dongtai, Yangzhong, Taixing and Xinghua improved.