Direct and indirect impacts of land use/cover change on urban heat environment: a 15-year panel data study across 365 Chinese cities during summer daytime and nighttime

文献类型： 外文期刊

第一作者： He, Tong

作者： He, Tong;Wang, Nan;Chen, Jiayue;Lu, Yingshuang;Qiao, Zhi;He, Tong;Hao, Yan;Wu, Feng;Xu, Xinliang;Liu, Luo;Han, Dongrui;Sun, Zongyao

作者机构：

关键词： Urban heat environment; Land use/cover change; Contribution index; Regional climate; Direct and indirect impacts

期刊名称：LANDSCAPE ECOLOGY （ 影响因子：5.2； 五年影响因子：5.3 ）

ISSN： 0921-2973

年卷期： 2024 年 39 卷 3 期

页码：

收录情况： SCI

摘要： ContextLand use/cover change (LUCC) can directly and indirectly affect surface urban heat island intensity (SUHII) and the effects need to be decomposed.ObjectivesTo perform long-term trend analyses of contribution indexes (CIs) of land use types to urban heat environment in cities and to deconstruct direct and indirect effects of LUCC on SUHII within geographical regions.MethodsMann-Kendall test and Sen's slope were used to examine the trends of CIs and SUHII in 365 cities during summer of 2005-2019. Structural equation models were established to quantify direct and indirect effects of land use types' CIs on SUHII in six geographical regions of China.ResultsFirst, SUHII in 78.08% and 73.70% of the Chinese cities increased during summer daytime and nighttime, respectively. Second, the CI of built-up land significantly increased across more than half of the cities in all the six regions. Third, not all land use types exerted both direct and indirect effects on SUHII. At daytime, the CI of cropland (direct) was the dominant factor in East China (1.386), South-central (- 0.637), and Northwest (- 0.399) regions. At nighttime, the CI of water bodies (both direct and indirect) was the dominant factor in Northwest (0.506) and Northeast (0.697) regions while CI of built-up land (both direct and indirect) determined in North China (0.476).ConclusionsSeparation of direct and indirect effects of land use types on SUHII had practical implications for cities to optimize the structures and functions of ecosystems and to take regionally based actions improving the urban heat environment.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序