干旱区生态环境知识资源中心(Arid): Divergent impacts of seasonal precipitation deficiency on grassland growth in drylands of Central Asia

Arid

DOI	10.1088/1748-9326/ad6ea7
	Divergent impacts of seasonal precipitation deficiency on grassland growth in drylands of Central Asia
	Yuan, Ye; Bao, Anming; Chang, Cun; Jiang, Liangliang; Zheng, Guoxiong; Yu, Tao; Jiang, Ping
通讯作者	Jiang, P
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
出版年	2024
卷号	19 期号:10
英文摘要	Water availability and its timing are essential for determining dryland dynamics, and grasslands in Central Asia are particularly vulnerable to water provided by precipitation. Climate change is projected to alter the seasonal distribution of precipitation patterns and increase the frequency of extreme events. Little is known about the response of grasslands to seasonal precipitation deficiency (PD), especially considering the time lag effect. Here, we evaluated the impacts of PD on grassland growth at the seasonal scale based on the normalized difference vegetation index (NDVI). Our findings showed that grassland growth during spring was mostly affected by PD in arid regions, with PD occurring during the nongrowing season and spring causing mean standardized anomalies (SAs) of -0.83 and -0.54, respectively, for the NDVI. In semiarid and subhumid regions, summer PD caused not only the largest negative response in summer (with SAs of -0.94 and -0.80 for semiarid and subhumid regions, respectively) but also in autumn (-0.80 and -0.74). PD in autumn had a less adverse effect on grassland growth. The divergent seasonal responses primarily stemmed from shifts in the dominant factors influencing grassland growth across seasons. PD reduced soil moisture in spring and summer, which in turn affected grassland growth. However, summer PD affected autumn grassland growth primarily through the carryover effect. Our results highlighted the importance of the timing of PD and suggested that precipitation in the previous season should receive more attention when considering the relationship between vegetation and precipitation at the seasonal scale.
英文关键词	precipitation deficiency drylands grasslands Central Asia
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001302599400001
WOS关键词	CRITICAL CLIMATE PERIODS ; VEGETATION GROWTH ; PRODUCTIVITY ; VARIABILITY ; DROUGHT ; SENSITIVITY ; ECOSYSTEMS ; CHINA
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403643
推荐引用方式 GB/T 7714	Yuan, Ye,Bao, Anming,Chang, Cun,et al. Divergent impacts of seasonal precipitation deficiency on grassland growth in drylands of Central Asia[J],2024,19(10).
APA	Yuan, Ye.,Bao, Anming.,Chang, Cun.,Jiang, Liangliang.,Zheng, Guoxiong.,...&Jiang, Ping.(2024).Divergent impacts of seasonal precipitation deficiency on grassland growth in drylands of Central Asia.ENVIRONMENTAL RESEARCH LETTERS,19(10).
MLA	Yuan, Ye,et al."Divergent impacts of seasonal precipitation deficiency on grassland growth in drylands of Central Asia".ENVIRONMENTAL RESEARCH LETTERS 19.10(2024).