气候变化领域集成服务门户(CCPortal): Biodiversity and Wetting of Climate Alleviate Vegetation Vulnerability Under Compound Drought-Hot Extremes

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DOI	10.1029/2024GL108396
	Biodiversity and Wetting of Climate Alleviate Vegetation Vulnerability Under Compound Drought-Hot Extremes
发表日期	2024
ISSN	0094-8276
EISSN	1944-8007
起始页码	51
结束页码	10
卷号	51 期号:10
英文摘要	Global warming has intensified the intensity of compound drought-hot extremes (CDHEs), posing more severe impacts on human societies and ecosystems than individual extremes. The vulnerability of global terrestrial ecosystems under CDHEs, along with its key influencing factors, remains poorly understood. Based on multiple remote sensing data, we construct a Vine Copula model to appraise vegetation vulnerability under CDHEs, and attribute it to climatic and biotic factors for five different vegetation types. High vulnerability is detected in central and southern regions of North America, eastern and southern regions of South America, Southern Africa, northern and western Europe, and northern and eastern Australia. The drier the climate, the higher will be the vulnerability. Furthermore, biodiversity and biomass are key biotic factors influencing the vulnerability of various vegetation types, such that ecosystems with richer biodiversity and higher biomass have lower vulnerability to CDHEs. The findings deepen understanding of terrestrial ecosystem response to CDHEs. Drought and hot-related extremes often coincide or follow one another, known as compound drought-hot extremes (CDHEs), adversely affecting various vegetation processes. Thus, investigating the response relationship between vegetation dynamics and CDHEs is critical for maintaining the sustainable development of ecosystems under the background of climate warming. High ecosystem vulnerability is detected in central and southern regions of North America, eastern and southern regions of South America, Southern Africa, northern and western Europe, and northern and eastern Australia. Climatic factors (precipitation, arid index, temperature, and radiation) dominate the vulnerability of all vegetation types. The drier the climate, the higher will be the vulnerability of vegetation to CDHEs. Furthermore, biodiversity and biomass are key biotic factors influencing the vulnerability. The results provide us with essential insights for managing and adapting terrestrial ecosystems against climate change and are of interest to a wide range of audiences, including but not limited to ecologists, hydrologists, and climatologists. A framework is developed to estimate the vegetation vulnerability in response to compound drought-hot extremes and attribute it to various factors Vegetation vulnerability is higher for grasses and shrubs than for evergreen and deciduous forests Vegetation vulnerability is both affected by climate and biotic factors, but climate factors are more dominant
英文关键词	vegetation; vulnerability; drought; compound extremes; machine learning
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001226304000001
来源期刊	GEOPHYSICAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305640
作者单位	Yangzhou University; Southern University of Science & Technology; University of Alberta; University of Colorado System; University of Colorado Boulder; Northwest A&F University - China; North China University of Water Resources & Electric Power; China Institute of Water Resources & Hydropower Research
推荐引用方式 GB/T 7714	. Biodiversity and Wetting of Climate Alleviate Vegetation Vulnerability Under Compound Drought-Hot Extremes[J],2024,51(10).
APA	(2024).Biodiversity and Wetting of Climate Alleviate Vegetation Vulnerability Under Compound Drought-Hot Extremes.GEOPHYSICAL RESEARCH LETTERS,51(10).
MLA	"Biodiversity and Wetting of Climate Alleviate Vegetation Vulnerability Under Compound Drought-Hot Extremes".GEOPHYSICAL RESEARCH LETTERS 51.10(2024).

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