气候变化领域集成服务门户(CCPortal): High-resolution satellite images reveal the prevalent positive indirect impact of urbanization on urban tree canopy coverage in South America

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DOI	10.1016/j.landurbplan.2024.105076
	High-resolution satellite images reveal the prevalent positive indirect impact of urbanization on urban tree canopy coverage in South America
	Guo, Jianhua; Hong, Danfeng; Zhu, Xiao Xiang
发表日期	2024
ISSN	0169-2046
EISSN	1872-6062
起始页码	247
卷号	247
英文摘要	Trees in urban areas act as carbon sinks and provide ecosystem services for residents. However, the impact of urbanization on tree coverage in South America remains poorly understood. Here, we make use of very high resolution satellite imagery to derive urban tree coverage for 882 cities in South America and developed a tree coverage impacted (TCI) coefficient to quantify the direct and indirect impacts of urbanization on urban tree canopy (UTC) coverage. The direct effect refers to the change in tree cover due to the rise in urban intensity compared to scenarios with extremely low levels of urbanization, while the indirect impact refers to the change in tree coverage resulting from human management practices and alterations in urban environments. Our study revealed the negative direct impacts and prevalent positive indirect impacts of urbanization on UTC coverage. In South America, 841 cities exhibit positive indirect impacts, while only 41 cities show negative indirect impacts. The prevalent positive indirect effects can offset approximately 48% of the direct loss of tree coverage due to increased urban intensity, with full offsets achieved in Argentinian and arid regions of South America. In addition, human activity factors play the most important role in determining the indirect effects of urbanization on UTC coverage, followed by climatic and geographic factors. These findings will help us understand the impact of urbanization on UTC coverage along the urban intensity gradient and formulate policies and strategies to promote sustainable urban development in South America.
英文关键词	South America; Urban tree coverage; Urbanization impacts; Remote sensing; Urban sustainable development
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geography ; Physical Geography ; Public Administration ; Urban Studies
WOS类目	Ecology ; Environmental Studies ; Geography ; Geography, Physical ; Regional & Urban Planning ; Urban Studies
WOS记录号	WOS:001214996700001
来源期刊	LANDSCAPE AND URBAN PLANNING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300083
作者单位	Technical University of Munich; Chinese Academy of Sciences; Aerospace Information Research Institute, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Guo, Jianhua,Hong, Danfeng,Zhu, Xiao Xiang. High-resolution satellite images reveal the prevalent positive indirect impact of urbanization on urban tree canopy coverage in South America[J],2024,247.
APA	Guo, Jianhua,Hong, Danfeng,&Zhu, Xiao Xiang.(2024).High-resolution satellite images reveal the prevalent positive indirect impact of urbanization on urban tree canopy coverage in South America.LANDSCAPE AND URBAN PLANNING,247.
MLA	Guo, Jianhua,et al."High-resolution satellite images reveal the prevalent positive indirect impact of urbanization on urban tree canopy coverage in South America".LANDSCAPE AND URBAN PLANNING 247(2024).