以遥感影像为数据源、地表温度为指标，评价成都1988~2013年城市热环境特征。结果表明：城市热场中高温区域向外迁移，2013年转移到三环至绕城区域；特高温类型面积逐年减小，2005~2013年平均每年减少1.83 km2，高温和次高温类型面积分别增加26.90 km2和45.35 km2；4个时段的年际城市热岛强度(UHII)按照先减小后增大再减小的规律变化，2005年UHII最强为4.37 ℃。从一环路以内至绕城高速间，1988年UHII逐渐减弱，最大值为5 ℃，2013年逐渐增强，最大值为2.93 ℃；沿西向东方向上地温值和植被覆盖度值均呈波动变化，二者呈负相关，确定性系数为0.5744。

In order to evaluate the urban thermal environment of Chengdu city from 1988 to 2013, the land surface temperature and remote sensing images are taken as indexes and data sources. The results show that the high temperature region of urban thermal field migrates outward, and it is transferred to the area between the third ring and circular highway in 2013. The extra-high temperature area decreases year by year, and it is reduced by 1.83 km2 annualy from 2005 to 2013, the areas of high temperature and sub-high temperature increase by 26.90 km2 and 45.35 km2, respectively. The change rule of urban heat island intensity (UHII) is first decrease and then increase and finally decrease in four periods, and the strongest of UHII is 4.37 ℃ in 2005. The UHII is weakened in 1988 and strengthened in 2013 from area of the first ring to circular highway, the maximum values are 5 ℃ and 2.93 ℃ respectively in the two years. The change rules of land surface temperature and vegetation coverage values are fluctuant along the west to east direction with negative correlation, and the certainty factor is 0.5744.