气候变化领域集成服务门户(CCPortal): Coherence of recurring fires and land use change in South America

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DOI	10.1002/rse2.390
	Coherence of recurring fires and land use change in South America
	Ren, Shulin; Xu, Xiyan; Jia, Gensuo; Huang, Anqi; Ma, Wei
发表日期	2024
EISSN	2056-3485
英文摘要	Fire events in South America are becoming more extensive and frequent as climate extremes and human pressures increase, and even repeatedly occurring in some areas within decades. However, the relationship between recurring fires and vegetation dynamics remains unclear. Here, we extracted the number of fire occurrences using burned area satellite product and analysed the relationship between recurring fires and vegetation dynamics with remote sensing land use and vegetation index datasets in South America. We show that approximately 1.39 x 106 km2 of burnt area has experienced recurring fires during 2001-2020. More than half of burnt area of recurring fires occurred in savannahs with remaining burnt area in grasslands, forests and croplands. Although forests tended to be less susceptible to recurring fires among all vegetation types, their coverage loss with recurring fires was the greatest. The greater proportion of forest conversion to croplands concurred with more recurring fires. Conversely, the coverage of croplands and grasslands gained the most with recurring fires. In the areas without vegetation conversion, more frequent recurring fires further suppressed canopy greenness and density, even in fire-adapted savannahs and grasslands. Our results suggest that recurring fires and land use change are generally coincident, reflecting the intense pressure of human activities on natural vegetation in South America. Thus, coordinated efforts on vegetation conservation and sustainable management of human-induced burning in the region are urgently needed. Fire occurrences during 2001-2020 were quantified from satellite data in South America. Recurring fires concur with land use change, and more frequent fires correspond to greater vegetation conversion for anthropogenic uses. The canopy of surviving vegetation from more frequent fires is more severely damaged. image
英文关键词	Canopy; land use; recurring fires; South America; vegetation
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing
WOS类目	Ecology ; Remote Sensing
WOS记录号	WOS:001199714700001
来源期刊	REMOTE SENSING IN ECOLOGY AND CONSERVATION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300564
作者单位	Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Nanjing University of Information Science & Technology
推荐引用方式 GB/T 7714	Ren, Shulin,Xu, Xiyan,Jia, Gensuo,et al. Coherence of recurring fires and land use change in South America[J],2024.
APA	Ren, Shulin,Xu, Xiyan,Jia, Gensuo,Huang, Anqi,&Ma, Wei.(2024).Coherence of recurring fires and land use change in South America.REMOTE SENSING IN ECOLOGY AND CONSERVATION.
MLA	Ren, Shulin,et al."Coherence of recurring fires and land use change in South America".REMOTE SENSING IN ECOLOGY AND CONSERVATION (2024).