This paper retrieves brightness temperature using quantitative inversion method from Landsat TM/TM + thermal infrared remote sensing data of Neijiang City, Sichuan Province obtained on June 23, 1988, May 10, 2000 and May 6, 2007 respectively and classifies the temperature using mean standard deviation method. In the years 1988, 2000 and 2007, the maximum heat island effect intensity was 15.682℃ , 16. 016℃ and 15. 498℃ respectively, the weighted average heat island effect intensity was 1. 476 ℃, 1.991℃ and 0. 674 ℃ respectively and the urban heat island ration index was 0.617, 0. 775 and 0. 406 respectively. The change trends of the three evaluation parameters were basically identical, that is, first increased and then decreased, which shows that urban heat island effects in Neijiang City first increased and then decreased in the years 1988, 2000 and 2007. The above research results shows that despite the accelerating urbanization since 2000, thermal environmental problems have been being relieved since 2000 due to the effort of protecting ecological environment.%利用四川省内江市1988年6月23日、2000年5月10日和2007年5月6日的Landsat TM/TM+热红外遥感数据,定量反演亮度温度,并利用均值-标准差法对温度进行分级.1988-2000-2007年间,内江市最大热岛强度分别为15.682℃,16.016℃和15.498℃；加权平均热岛强度分别为1.476℃,1.991℃和0.674℃；城市热岛比例指数分别为0.617,0.775和0.406.三个评价指标的变化趋势具有一致性,即先升高再降低,表明1988-2000-2007年间内江市城市热岛效应先增强再减弱.这说明2000年以来尽管城市化进程加剧,但是随着对城市生态环境保护的重视,城市化导致的热环境问题比2000年以前有所缓解.
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