干旱区生态环境知识资源中心(Arid): Vegetation in Arid Areas of the Loess Plateau Showed More Sensitivity of Water-Use Efficiency to Seasonal Drought

Arid

DOI	10.3390/f13050634
	Vegetation in Arid Areas of the Loess Plateau Showed More Sensitivity of Water-Use Efficiency to Seasonal Drought
	Pei, Tingting; Hou, Qingqing; Chen, Ying; Ji, Zhenxia; Wu, Huawu; Xie, Baopeng; Qi, Peixin; Zhang, Jiaxin
通讯作者	Chen, Y
来源期刊	FORESTS
EISSN	1999-4907
出版年	2022
卷号	13 期号:5
英文摘要	Studying the impact of regional or seasonal drought on vegetation water-use efficiency (WUE) can identify an effective theoretical basis by which vegetation can cope with future climate change. Based on remote sensing data and climate grid data, in this study, we calculated the ecosystem WUE and standardized precipitation evapotranspiration index (SPEI), analyzed the temporal and spatial divergence of seasonal drought and WUE, and explored the relationship between WUE and seasonal drought in the Loess Plateau. The results indicate that from 2001 to 2019, the humidity in spring and summer on the Loess Plateau shows an increasing trend, and the aridity in fall also shows an increasing trend. Averaged over four seasons, WUE presents distribution characteristics of high in the southeast and low in the northwest, with the highest WUE in summer. However, the geological distribution of the sensitivity of WUE to seasonal drought was significantly different. Spring drought increased WUE, whereas summer drought led to a decrease in WUE. When fall drought was less severe, the WUE increased; WUE response to winter SPEI was negative, but the sensitivity did not change with variation of drought degree. The sensitivity of WUE to the magnitude of seasonal drought was affected by regional dry and wet conditions. A clear seasonal divergence was found in four climate regions, along with increased drought intensity, and the sensitivity of WUE to drought magnitude in arid areas was generally higher than that in semi-arid, semi-humid areas, or humid areas. With this study, we deeply explored how ecosystems deal with the water supply strategy of seasonal drought, which is of great significance in the understanding of the coupling relationship between the carbon-water cycle and climate change.
英文关键词	ridge regression standardized precipitation evapotranspiration index (SPEI) sensitivity drought response
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:000802580600001
WOS关键词	CLIMATE-CHANGE ; ECOSYSTEM ; CARBON ; CHINA ; FOREST ; EVAPOTRANSPIRATION ; VARIABILITY ; GROWTH ; LEAF
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392617
推荐引用方式 GB/T 7714	Pei, Tingting,Hou, Qingqing,Chen, Ying,et al. Vegetation in Arid Areas of the Loess Plateau Showed More Sensitivity of Water-Use Efficiency to Seasonal Drought[J],2022,13(5).
APA	Pei, Tingting.,Hou, Qingqing.,Chen, Ying.,Ji, Zhenxia.,Wu, Huawu.,...&Zhang, Jiaxin.(2022).Vegetation in Arid Areas of the Loess Plateau Showed More Sensitivity of Water-Use Efficiency to Seasonal Drought.FORESTS,13(5).
MLA	Pei, Tingting,et al."Vegetation in Arid Areas of the Loess Plateau Showed More Sensitivity of Water-Use Efficiency to Seasonal Drought".FORESTS 13.5(2022).