摘要
本文利用MODIS月度地表温度产品(MOD11C3、MYD11C3)获取2001、2010和2016年京津冀城市群年平均和季平均地表温度数据,并结合夜间灯光数据和土地利用数据估算京津冀城市群各地级市城市热岛强度.分别从年度、季度、月度三个方面分析京津冀城市群各地级市2001—2016年城市热岛情况,并结合城市发展规模对其进行相关分析,以期为京津冀城市群后期城市规划提供参考依据.结果表明:2001—2016年间,京津冀城市群建成区面积扩大明显,且城市规模越大,建成区面积增长越大;京津冀城市群热岛强度与城市规模有关,一二线城市整体热岛强度高于三四线城市.根据京津冀城市群年度数据分析得出,年平均夜间热岛强度高于日间热岛,且二者差异随城市规模扩大而减小;从季度数据可以看出,冬季夜间热岛强于日间热岛,而在夏季日间热岛和夜间热岛的强弱关系则与城市规模有关,城市规模越大,日间和夜间热岛强度之间差异增大;通过分析逐月数据发现,日间热岛呈现出夏季高、冬季低的特点,峰值多在8月份出现,而夜间热岛各月份间无明显变化.
Annual and seasonal average land surface temperatures of Beijing-Tianjin-Hebei urban agglomeration in 2001,2010 and 2016 were calculated based on the MODIS monthly land surface temperature product（ MOD11 C3/MYD11 C3）. First,the urban heat island（ UHI） intensity of every prefecture-level city in this urban agglomeration is estimated with the data of night light and land use. Then,annual,seasonal and monthly analysis of the UHI intensity of different cities in Beijing-Tianjin-Hebei urban agglomeration is made. The analysis results can provide some advices for the urban planning of Beijing-Tianjin-Hebei urban agglomeration. The results showed that,from2001 to 2016,the built-up area expanded significantly in Beijing-Tianjin-Hebei urban agglomeration. The degree of built-up area expansion was increased with the city scales. The UHI intensity was related to city scale. The overall UHI intensity of the first and the second cities were higher than that of the third and the fourth cities. According to the annual data,the annual average UHI intensity of nighttime was higher than that of the daytime,and the difference between them increased with the city scale. Based on seasonal data,the UHI intensity of nighttime in winter was higher than that of daytime. In summer,the relationship between daytime and nighttime UHI intensity were related with the city scale. From the monthly data,the daytime UHI intensity was high in summer and low in winter. The peak of UHI intensity mostly appeared in August over the year. However,there was no clear change in the nighttime UHI intensity among the months. The larger the city scale,the smaller the difference between the intensity of daytime and the intensity of nighttime.
作者
张旸
胡德勇
曹诗颂
陈姗姗
于琛
Zhang Yang;Hu Deyong;Cao Shisong;Chen Shanshan;Yu Chen(College of Resource Environment and Tourism,Capital Normal University,Beijing 100048;Beijing Key Laboratory of Resources Environment and Geographic Information System,Beijing 100048)
出处
《首都师范大学学报（自然科学版）》
2018年第5期72-80,共9页
Journal of Capital Normal University：Natural Science Edition
基金
国家自然科学基金面上项目(41671339)
关键词
京津冀城市群
城市热岛强度
遥感监测
建成区
Beijing-Tianjin-Hebei urban agglomeration
urban heat island intensity
remote sensing monitoring
built-up area
