气候变化领域集成服务门户(CCPortal): Scattered tree death contributes to substantial forest loss in California

CCPortal

DOI	10.1038/s41467-024-44991-z
	Scattered tree death contributes to substantial forest loss in California
	Cheng, Yan; Oehmcke, Stefan; Brandt, Martin; Rosenthal, Lisa; Das, Adrian; Vrieling, Anton; Saatchi, Sassan; Wagner, Fabien; Mugabowindekwe, Maurice; Verbruggen, Wim; Beier, Claus; Horion, Stephanie
发表日期	2024
EISSN	2041-1723
起始页码	15
结束页码	1
卷号	15 期号:1
英文摘要	In recent years, large-scale tree mortality events linked to global change have occurred around the world. Current forest monitoring methods are crucial for identifying mortality hotspots, but systematic assessments of isolated or scattered dead trees over large areas are needed to reduce uncertainty on the actual extent of tree mortality. Here, we mapped individual dead trees in California using sub-meter resolution aerial photographs from 2020 and deep learning-based dead tree detection. We identified 91.4 million dead trees over 27.8 million hectares of vegetated areas (16.7-24.7% underestimation bias when compared to field data). Among these, a total of 19.5 million dead trees appeared isolated, and 60% of all dead trees occurred in small groups ( <= 3 dead trees within a 30 x 30 m grid), which is largely undetected by other state-level monitoring methods. The widespread mortality of individual trees impacts the carbon budget and sequestration capacity of California forests and can be considered a threat to forest health and a fuel source for future wildfires. Tree mortality due to climate change and other disturbances is on the rise. Here, the authors use high-resolution remote sensing data, ground observations and deep learning to quantify individual dead trees and potential drivers across California in the year 2020, encompassing 91.4 million dead trees.
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001146298600021
来源期刊	NATURE COMMUNICATIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295323
作者单位	University of Copenhagen; University of Copenhagen; United States Department of the Interior; United States Geological Survey; University of Twente; University of California System; University of California Los Angeles; California Institute of Technology; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL)
推荐引用方式 GB/T 7714	Cheng, Yan,Oehmcke, Stefan,Brandt, Martin,et al. Scattered tree death contributes to substantial forest loss in California[J],2024,15(1).
APA	Cheng, Yan.,Oehmcke, Stefan.,Brandt, Martin.,Rosenthal, Lisa.,Das, Adrian.,...&Horion, Stephanie.(2024).Scattered tree death contributes to substantial forest loss in California.NATURE COMMUNICATIONS,15(1).
MLA	Cheng, Yan,et al."Scattered tree death contributes to substantial forest loss in California".NATURE COMMUNICATIONS 15.1(2024).