Based on Landsat TM/ETM+remote sensing images from 1997 to 2000 and 2002 to 2012 of Jiangning District in Nanjing City,this paper analyzed the spatial-temporal change of temperature and its motivated impact supported by ENVI 4.8 and ArcGIS 10.2 through the inversion of land surface tempera-ture and the calculating of urbanization rate.The result showed that from the view of temporal dimension, surface average temperature was ascending rapidly from 1997 to 2012,rising steadily from 1997 to 2002 with the annual increase of 2.78℃,and fluctuant ascending from 2002 to 2012 with the annual increase of 1.22℃,that from the view of spatial dimension,the temperature in Jiangning District was rising tend-ency,among which rising trend were obvious in population concentration area and architectural complex area and were not significant in water area and vegetation-covered area.Pearson correlation a-nalysis demonstrated that land surface temperature was highly positively correlated with the urbanization rate,weakly positively correlated with average temperature and not correlated with precipitation of Nan-jing in July.%以南京市江宁区为研究对象,以1997—2000和2002—2012年中的Landsat TM/ETM+系列数据为主要信息源,在ENVI 4.8和ArcGIS10.2软件的支持下,在进行地表温度反演、城镇化指数计算基础上,进行研究区地表温度空间变化分析、时间系列分析、驱动因素分析.结果表明:从时间维度上分析,1997—2012年,研究区地表平均温度整体呈快速上升趋势;其中,1997—2002年,温度逐年递增,呈平稳上升趋势,平均每年升高2.78℃;2002—2012年,温度有明显的起伏变化,呈波动上升趋势,平均每年升高1.22℃.从空间维度上分析,1997—2012年,江宁区年际温度变化均呈上升趋势,其中,人口聚集区、建筑群区上升趋势较显著,水体分布区及绿地分布区次之.Pearson相关性分析表明,地表温度与城镇化指数高度正相关,与南京市7月均温低度正相关,与7月平均降水量不相关.
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