中国典型城市自然和社会经济因素引发的遥感地表温度(LST)变化

IF 6 2区 工程技术 Q1 ENVIRONMENTAL SCIENCES
Xiaoyi Cao , Wenqian Chen , Yuxuan Xing , Yang Chen , Xiangyue Chen , Xiaofan Wang , Dongyou Wu , Xiaoying Niu , Wei Pu , Jun Liu , Xin Wang
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引用次数: 0

摘要

地表温度(LST)受多种自然因素和城市化进程的影响。利用 MODIS LST 数据和 Geodetector 模型,我们比较了超大城市(北京、广州、上海和深圳)、特大城市(西安)、大城市(乌鲁木齐和哈尔滨)和中小城市(拉萨)的 LST 时空变化及其驱动因素。特大城市的土地利用状况主要受社会经济因素的影响(11%-61%),而自然因素对大城市和中小城市的土地利用状况影响较大(15%-58%)。在西安,社会经济因素对日间 LST 的影响更大(68%)。高程是影响 LST 空间异质性的关键因素,而植被指数的增强通过与其他因素的相互作用,主要决定了 LST 的空间变化。各种因素之间的相互作用大大增强了它们对 LST 的贡献。根据城市热岛率指数,拉萨的昼夜城市热应力风险最高(>0.83),而哈尔滨最低(<0.34)。在特大城市中,北京的城市热风险等级最高。西安的热风险等级在夜间明显下降。总体而言,城市白天的高温风险水平普遍高于夜间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The changes in remoted land surface temperature (LST) triggered by natural and socioeconomic factors in typical Chinese cities

The changes in remoted land surface temperature (LST) triggered by natural and socioeconomic factors in typical Chinese cities
Land surface temperature (LST) is influenced by a variety of natural factors and urbanization processes. Using MODIS LST data and the Geodetector model, we compared the spatiotemporal variations of LST and their drivers in super megacities (Beijing, Guangzhou, Shanghai, and Shenzhen), a megacity (Xi'an), large cities (Urumqi and Harbin), and a small and medium-sized city (Lhasa). The LST of super megacities is primarily influenced by socioeconomic factors (11 %–61 %), whereas natural factors significantly impact the LST of large cities and small to medium-sized cities (15 %–58 %). Socioeconomic factors contributed more significantly to daytime LST in Xi’an (68 %). Elevation is a crucial factor influencing the spatial heterogeneity of LST, and the enhanced vegetation index predominantly dictates the spatial variation of LST through its interactions with other factors. The interaction between various factors significantly enhances their contributions to LST. According to the urban heat island ratio index, Lhasa exhibited the highest urban heat stress risk (>0.83) during both day and night, whereas Harbin displayed the lowest (<0.34). Beijing possessed the highest urban heat risk rating among the super megacities. Xi'an's risk level decreased significantly at night. Overall, cities generally exhibited higher levels of heat risk during the day compared to the night.
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来源期刊
Urban Climate
Urban Climate Social Sciences-Urban Studies
CiteScore
9.70
自引率
9.40%
发文量
286
期刊介绍: Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following: Urban meteorology and climate[...] Urban environmental pollution[...] Adaptation to global change[...] Urban economic and social issues[...] Research Approaches[...]
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