干旱区生态环境知识资源中心(Arid): Multifaceted characteristics of aridity changes and causal mechanisms in Chinese drylands

Arid

DOI	10.1177/03091333221129867
	Multifaceted characteristics of aridity changes and causal mechanisms in Chinese drylands
	Hu, Ying; Wei, Fangli; Fu, Bojie; Wang, Shuai; Wang, Lanhui; Chen, Yongzhe
通讯作者	Fu, BJ
来源期刊	PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT
ISSN	0309-1333
EISSN	1477-0296
出版年	2023
卷号	47 期号:3 页码:438-453
英文摘要	The water cycle is accelerating in the context of global warming. However, how the multifaceted characteristics of aridity, particularly atmospheric, hydrological, and ecological drying, change and interact with each other are largely unknown. A gap we bridged was discovering the causal relationships underlying the atmosphere-hydrosphere-biosphere nexus from the nonlinear dynamic system perspective based on convergent cross mapping (CCM). Dryland area in China has expanded since 1982, while the vegetation greenness indicated by leaf area index has been increasing during the same period. The results showed that the causality among atmospheric, hydrological, and ecological drying in different subtypes of drylands was different. In arid and semi-arid regions: vegetation changes were mainly driven by soil moisture (SM) and vapor pressure deficit (VPD), and VPD regulated SM. In hyper-arid and dry sub-humid areas: VPD dominated vegetation changes. VPD increases did not contribute to SM loss under the intense water stress in hyper-arid regions, as the soil water supply cannot meet the atmospheric water demand. In dry sub-humid areas, human disturbances have attenuated the dependence of vegetation changes on SM variability. This research pioneers complex nonlinear dynamic analyses on the multifaceted characteristics of ecosystems, which can deepen our understanding of atmosphere-vegetation-soil interactions in drylands and guide the sustainable management of dryland ecosystems in China and elsewhere.
英文关键词	Aridity vapor pressure deficit soil moisture causality convergent cross mapping
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000863767200001
WOS关键词	LOESS PLATEAU ; GLOBAL DRYLANDS ; WATER-BALANCE ; VEGETATION ; COVER ; GREENNESS ; CYCLE
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398179
推荐引用方式 GB/T 7714	Hu, Ying,Wei, Fangli,Fu, Bojie,et al. Multifaceted characteristics of aridity changes and causal mechanisms in Chinese drylands[J],2023,47(3):438-453.
APA	Hu, Ying,Wei, Fangli,Fu, Bojie,Wang, Shuai,Wang, Lanhui,&Chen, Yongzhe.(2023).Multifaceted characteristics of aridity changes and causal mechanisms in Chinese drylands.PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT,47(3),438-453.
MLA	Hu, Ying,et al."Multifaceted characteristics of aridity changes and causal mechanisms in Chinese drylands".PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT 47.3(2023):438-453.