State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
Sci Total Environ. 2022 Jan 10;803:149735. doi: 10.1016/j.scitotenv.2021.149735. Epub 2021 Aug 19.
Currently, most regional thermal environment (RTE) studies in urban agglomerations focus on developing countries, especially China. However, there is still a lack of comparative studies on the RTEs of urban agglomerations between China and other developed countries, such as the United States. This paper used the Beijing-Tianjin-Hebei (BTH) agglomeration in China and Boswash (the highly urbanized area extending from Boston to Washington) in the United States as examples to investigate the differences in land development patterns, RTEs and their relationship between the agglomerations of China and America. The results showed that the land development patterns of BTH and Boswash were different, as evidenced by the spatial pattern of land development intensity (LDI) and impervious surface configuration. In terms of the RTE, the sub-high land surface temperature (LST) zones were aggregated in a large and compact patch in central and northern BTH. However, the sub-high zones of the cities in Boswash were relatively separate. Moreover, the land development pattern of Boswash showed a stronger relationship with the RTE than that of BTH did. Global Moran's I between the LDI and LST in Boswash was higher than that in BTH. In addition, the correlation between impervious surface configuration and LST in Boswash was stronger than that in BTH, and this correlation was more controlled by LDI in Boswash. This study also indicated that BTH should change the land development pattern to prevent the further expansion of aggregated sub-high LST zones and control the proximity of high LST zones in cities in central and southern BTH, however, Boswash should adopt some local heat management approaches (installing cool and green roofs and creating more green space) in the core areas to help reduce the very high temperatures in the already highly developed areas where the largest fraction of people live.
目前，大多数城市集聚区的区域热环境 (RTE) 研究集中在发展中国家，特别是中国。然而，对于中国和其他发达国家（如美国）的城市集聚区 RTE 比较研究仍然缺乏。本文以中国的京津冀城市群和美国的 Boswash（从波士顿延伸到华盛顿的高度城市化地区）为例，研究了中美城市群的土地开发模式、RTE 及其关系的差异。结果表明，京津冀和 Boswash 的土地开发模式不同，表现在土地开发强度 (LDI) 和不透水面配置的空间格局上。在 RTE 方面，中高地表温度 (LST) 区在京津冀中心和北部集中在一个大而紧凑的斑块中。然而，Boswash 城市的次高区相对分离。此外，Boswash 的土地开发模式与 RTE 的关系比京津冀更强。Boswash 的 LDI 和 LST 之间的全局 Moran's I 高于京津冀。此外，Boswash 的不透水面配置与 LST 的相关性强于京津冀，并且这种相关性在 Boswash 中受 LDI 的控制更强。本研究还表明，京津冀应改变土地开发模式，防止集中的次高 LST 区进一步扩大，并控制京津冀中南部城市的高 LST 区的接近度，然而，Boswash 应在核心区域采取一些局部热管理措施（安装凉爽和绿色屋顶并创造更多绿色空间），以帮助降低已经高度发达且居住人口比例最大的地区的极高温度。
