干旱区生态环境知识资源中心(Arid): Warming as a Driver of Vegetation Loss in the Sonoran Desert of California

Arid

DOI	10.1029/2020JG005942
	Warming as a Driver of Vegetation Loss in the Sonoran Desert of California
	Hantson, Stijn; Huxman, Travis E.; Kimball, Sarah; Randerson, James T.; Goulden, Michael L.
通讯作者	Hantson, S (corresponding author), Univ Calif Irvine, Geospatial Data Solut Ctr, Irvine, CA 92697 USA.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
EISSN	2169-8961
出版年	2021
卷号	126 期号:6
英文摘要	Dryland ecosystems cover large regions of the Earth and have important impacts on global biogeochemistry and the carbon cycle. The plant species that occupy dryland environments have traits that enable them to withstand harsh environmental conditions, and some researchers have hypothesized that dryland vegetation may be comparatively resilient to changing climate, while others have pointed out that dryland vegetation often operates close to the physiological limits of many species, implying a possible vulnerability to warming. Here we use the Landsat archive to analyze vegetation dynamics for part of the Sonoran Desert and adjacent mountains in southern California. We show that large decreases in vegetation cover occurred over the last 34 years (1984-2017), especially across the xeric portions of our study region, where we observed a normalized difference vegetation index (NDVI) decline of 1.1 +/- 0.3% yr(-1). Changes in precipitation explain most of the year-to-year variation but are unable to fully explain the observed long-term decline in NDVI. Statistical models that combined summer temperature and mean annual precipitation explained more of the spatial and temporal structure of NDVI trends and implicate climate warming as an important driver of declining vegetation cover. The impact of warming contributed to a change in the precipitation-vegetation relationship through time for this desert region, indicating a structural change in ecosystem function during the study period. These results suggest that recent climate change has already had significant impact on these drylands and highlight the potential for future warming to increase risks for dryland ecosystems in other regions.
英文关键词	desert drought vegetation cover Landsat vegetation change leaf area normalized difference vegetation index (NDVI)
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000666436400004
WOS关键词	CLIMATE-CHANGE ; PRECIPITATION VARIABILITY ; CARBON SEQUESTRATION ; ELEVATED CO2 ; PLANT ; DROUGHT ; ECOSYSTEM ; PRODUCTIVITY ; MORTALITY ; SHRUB
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350842
作者单位	[Hantson, Stijn] Univ Calif Irvine, Geospatial Data Solut Ctr, Irvine, CA 92697 USA; [Huxman, Travis E.; Kimball, Sarah] Univ Calif Irvine, Ctr Environm Biol, Irvine, CA USA; [Randerson, James T.; Goulden, Michael L.] Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA USA
推荐引用方式 GB/T 7714	Hantson, Stijn,Huxman, Travis E.,Kimball, Sarah,et al. Warming as a Driver of Vegetation Loss in the Sonoran Desert of California[J],2021,126(6).
APA	Hantson, Stijn,Huxman, Travis E.,Kimball, Sarah,Randerson, James T.,&Goulden, Michael L..(2021).Warming as a Driver of Vegetation Loss in the Sonoran Desert of California.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,126(6).
MLA	Hantson, Stijn,et al."Warming as a Driver of Vegetation Loss in the Sonoran Desert of California".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 126.6(2021).