Li Li-Guang, Xu Shen-Lai, Wang Hong-Bo, Zhao Zi-Qi, Cai Fu, Wu Jin-Wen, Chen Peng-Shi, Zhang Yu-Shu
Ying Yong Sheng Tai Xue Bao. 2013 Dec;24(12):3446-52.
Based on the remote images in 2001 and 2010, the source and sink areas of urban heat island (UHI) in Shenyang City, Northeast China were determined by GIS technique. The effect of urban regional landscape pattern on UHI effect was assessed with land surface temperature (LST), area rate index (CI) of the source and sink areas and intensity index (LI) of heat island. The results indicated that the land use type changed significantly from 2001 to 2010, which significantly changed the source and sink areas of UHI, especially in the second and third circle regions. The source and sink areas were 94.3% and 5.7% in the first circle region, 64.0% and 36.0% in the third circle region in 2001, while they were 93.4% and 6.6%, 70.2% and 29.8% in 2010, respectively. It suggested that the land use pattern extended by a round shape in Shenyang led to the corresponding UHI pattern. The LST in the study area tended to decrease from the first circle region to the third. The UHI intensity was characterized with a single center in 2001 and with several centers in 2010, and the grade of UHI intensity was in a decreasing trend from 2001 to 2010. The absolute value of CI increased from the first circle region to the third, and the L1 was close to 1, suggesting the change in land use pattern had no significant influence on UHI in Shenyang.
基于2001年和2010年的遥感影像，运用地理信息系统（GIS）技术确定了中国东北沈阳市城市热岛（UHI）的源区和汇区。利用地表温度（LST）、源区和汇区的面积比率指数（CI）以及热岛强度指数（LI）评估了城市区域景观格局对城市热岛效应的影响。结果表明，2001年至2010年土地利用类型发生了显著变化，这显著改变了城市热岛的源区和汇区，尤其是在第二和第三圈层区域。2001年第一圈层区域的源区和汇区分别为94.3%和5.7%，第三圈层区域为64.0%和36.0%，而2010年分别为93.4%和6.6%、70.2%和29.8%。这表明沈阳呈圆形扩展的土地利用格局导致了相应的城市热岛格局。研究区域的地表温度从第一圈层区域向第三圈层区域呈下降趋势。2001年城市热岛强度以单中心为特征，2010年则有多个中心，且城市热岛强度等级从2001年到2010年呈下降趋势。CI的绝对值从第一圈层区域向第三圈层区域增加，且LI接近1，这表明土地利用格局的变化对沈阳的城市热岛没有显著影响。
