城市化
植被(病理学)
地理
人口增长
城市气候
气候变化
干旱
人口
生态学
环境科学
自然地理学
生物
环境卫生
医学
病理
作者
Lei Zhang,Lin Yang,Constantin M. Zohner,Thomas W. Crowther,Manchun Li,Feixue Shen,Guo Mao,Jun Qin,Ling Yao,Chenghu Zhou
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2022-07-08
卷期号:8 (27)
被引量:140
标识
DOI:10.1126/sciadv.abo0095
摘要
Urban environments, regarded as "harbingers" of future global change, may exert positive or negative impacts on urban vegetation growth. Because of limited ground-based experiments, the responses of vegetation to urbanization and its associated controlling factors at the global scale remain poorly understood. Here, we use satellite observations from 2001 to 2018 to quantify direct and indirect impacts of urbanization on vegetation growth in 672 worldwide cities. After controlling for the negative direct impact of urbanization on vegetation growth, we find a widespread positive indirect effect that has been increasing over time. These indirect effects depend on urban development intensity, population density, and background climate, with more pronounced positive effects in cities with cold and arid environments. We further show that vegetation responses to urbanization are modulated by a cities' developmental status. Our findings have important implications for understanding urbanization-induced impacts on vegetation and future sustainable urban development.
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