我国东部沿海三大城市群热岛变化及其与城市群发展的关系  

Urban Heat Island Change and Its Relationship to the Urbanization of Three Major Urban Agglomerations in China's Eastern Coastal Region

作　　者：林中立 徐涵秋 陈弘 LIN Zhongli;XU Hanqiu;CHEN Hong(Fujian Provincial Academy of Environmental Science,Fuzhou 350013,China;Institute of Remote Sensing Information Engineering,College of Environment and Resources,Fuzhou University,Fuzhou 350116,China;Fujian Provincial Key Laboratory of Remote Sensing Soil Erosion and Disaster Protection,Fuzhou 350116,China)

机构地区：[1]福建省环境科学研究院,福建福州350013 [2]福州大学环境与资源学院遥感信息工程研究所,福建福州350116 [3]福建省水土流失遥感监测评估与灾害防治重点实验室,福建福州350116

出　　处：《环境科学研究》2018年第10期1695-1704,共10页Research of Environmental Sciences

基　　金：国家自然科学基金项目(No.41501469);环境保护部重点预算项目~~

摘　　要：随着城市化进程的快速推进,城市群已经成为区域空间的重要组织形式.为揭示我国东部沿海京津唐、长三角和珠三角三大城市群热岛变化与城市群发展的关系,利用MODIS地表温度产品数据和DMSP/OLS夜间灯光数据,对2001—2013年这3个城市群的热岛效应与区域发展二者之间的关系进行研究.结果表明:2001—2013年,3个城市群的热岛斑块面积均有较大幅度的增加,并且在空间上逐渐相连接,形成热岛城市带; RHII(区域热岛指数)不断升高,京津唐城市群、长三角城市群、珠三角城市群分别升高0. 051、0. 070、0. 101,其热岛状况不断加剧.随着城市群的发展,城区对周边区域的辐射作用不断加强,建成区边缘的城郊过渡带是地表温度增加最为显著的区域.总体而言,城市群的扩展是其区域热岛效应的主要成因,表征城市扩展变化的夜间灯光亮度平均值差值与表征热岛变化的地表温度平均值差值之间存在对数关系,表现出先快后慢的趋势.With the rapid progress of urbanization,urban agglomeration has become an important distribution form of regional space. The eastern coastal region of China has the highest level of urbanization and the most developed economy in the country. The Beijing-TianjinTangshan area,the Yangtze River Delta and the Pearl River Delta are three major urban agglomerations in this region. In this paper,urban heat island changes and their relationships to the urbanization of these three major urban agglomerations from 2001 to 2013 were analyzed using MODIS land surface temperature（LST） and DMSP/OLS night-light data. The results show that during the 12-year study period the heat island patches in these three urban agglomerations have sprawled to a large extent and gradually connected to form the heat island zones. The Regional-Heat-Island Index（RHII） in these three urban agglomerations has been increasing,which demonstrates that the urban heat island effects are aggravating. The RHII in the Beijing-Tianjin-Tangshan area increased by 0. 051,from 0. 524 in 2001 to0. 575 in 2013,in the Yangtze River Delta the RHII increased by 0. 070,from 0. 491 to 0. 561 and the RHII in the Pearl River Delta increased by 0. 101,from 0. 441 to 0. 542. We also found that the radiation effects from the urban areas on their surrounding areas have been strengthening. Furthermore,night-light brightness and LST in suburban areas have increased more than those in built-up areas. There is a close relationship between night-light and LST in spatial distribution. On the whole,the expansions of urban agglomerations haveinduced the strong regional heat island effect. The regression analysis shows that the relationship between urban heat island and urban development is a logarithmic one.

关 键 词：我国东部沿海 城市群 城市热岛 夜间灯光数据 遥感 

分 类 号：X87[环境科学与工程—环境工程] TP79[自动化与计算机技术—检测技术与自动化装置]