干旱区生态环境知识资源中心(Arid): How is about the flash drought events and their impacts on vegetation in Central Asia

Arid

DOI	10.1007/s00382-024-07266-3
	How is about the flash drought events and their impacts on vegetation in Central Asia
	Zhu, Yanchao; Yang, Peng; Huang, Heqing; Xia, Jun; Chen, Yaning; Li, Zhi; Shi, Xiaorui
通讯作者	Yang, P
来源期刊	CLIMATE DYNAMICS
ISSN	0930-7575
EISSN	1432-0894
出版年	2024
英文摘要	A flash drought typically exhibits rapid development and high intensity, with significant impacts on societies and ecosystems. Central Asia (CA), a typical arid region, little attention has been paid to the characteristics of flash droughts and their impact on ecosystems. Therefore, a novel composite decomposition flash drought identification (CDFDI) framework was adopted to integrate data on soil moisture, normalized difference vegetation index (NDVI), and gross primary productivity to identify flash drought as a subphase of regular drought in CA. This study aims to explore flash drought characteristics and vegetation response in CA, comparing them with existing identification methods to assess the effectiveness of the flash drought identification framework. The main findings are: (1) introducing inter-event time and volume criterion and Madsen methods in the CDFDI framework yielded promising results, verified through correlation between flash drought characteristics and NDVI deficits (e.g., the average percentage of correlations between flash drought features and NDVI in the - 1 to -0.5 and 0.5 to 1 intervals was 15%); (2) the northern, central, eastern, and southeastern CA were frequently affected by flash droughts, while the western region experienced prolonged regular droughts with an insignificant weakening trend between 1948 and 2022; and (3) Average gross primary productivity response time was 30 days, and its spatial distribution indicated that the impacts of flash drought on vegetation were more immediate in the comparatively arid western CA. This study provides new insights into identifying and characterizing flash drought in changing environments, contributing to a better understanding of its impacts on ecosystems.
英文关键词	Flash drought Identification framework Vegetation response Central Asia
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001230105300001
WOS关键词	NORTHWEST CHINA ; PRECIPITATION DEFICIT ; DYNAMICS ; COVER ; INDEX ; RISK
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403205
推荐引用方式 GB/T 7714	Zhu, Yanchao,Yang, Peng,Huang, Heqing,et al. How is about the flash drought events and their impacts on vegetation in Central Asia[J],2024.
APA	Zhu, Yanchao.,Yang, Peng.,Huang, Heqing.,Xia, Jun.,Chen, Yaning.,...&Shi, Xiaorui.(2024).How is about the flash drought events and their impacts on vegetation in Central Asia.CLIMATE DYNAMICS.
MLA	Zhu, Yanchao,et al."How is about the flash drought events and their impacts on vegetation in Central Asia".CLIMATE DYNAMICS (2024).