干旱区生态环境知识资源中心(Arid): Comparing water uptake patterns of two tree species using stable isotopes on the Loess Plateau, China

Arid

DOI	10.1002/hyp.15006
	Comparing water uptake patterns of two tree species using stable isotopes on the Loess Plateau, China
	Cui, Yongsheng; Pan, Chengzhong; Ma, Lan; Sun, Zhanwei
通讯作者	Pan, CZ
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2023
卷号	37 期号:10
英文摘要	The water consumption mechanism of plantations is important to understand for the selection of afforestation tree species and sustainable watershed management in semi-arid regions. In this study, Robinia pseudoacacia and Pinus tabuliformis, which are commonly planted on the Loess Plateau of China, were selected to investigate the possible difference in water uptake modes. In 2019-2020, the stable isotopic compositions (delta H-2, delta O-18) of precipitation and the xylem and soil water of these two trees were sampled and compared using the direct inference approach and MixSIAR model. The difference in soil moisture was also measured. The results showed that the delta O-18 content of surface soil water (0-40 cm) was closely related to precipitation, while that of deep soil layers (100-200 cm) remained stable. The MixSIAR model performed appropriately in quantifying water apportionment, especially in the drought year of 2019. In July-August 2019, R. pseudoacacia showed strong drought resilience by absorbing water from the deep soil. The 0-40 cm and 100-200 cm soil layers contributed 0.325 and 0.376 to water absorption of R. pseudoacacia, and 0.675 and 0.151 to that of P. tabuliformis, respectively. However, there was a minor difference in the soil water uptake modes between the two species in the humid year of 2020. Compared with P. tabuliformis, R. pseudoacacia increased its consumption of water by 9.9% and 25.1% in the drought and humid year, respectively, which indicated that R. pseudoacacia plantations may contributed to drier deep soil layers. This study helps to improve our understanding of the water uptake mechanisms of common afforestation tree species on the Loess Plateau.
英文关键词	afforestation trees MixSIAR model soil moisture water consumption water uptake mode
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001145464600001
WOS关键词	SOIL-WATER ; UNSATURATED ZONE ; VERTICAL-DISTRIBUTION ; MOISTURE ; HYDROGEN ; STORAGE ; FOREST
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396875
推荐引用方式 GB/T 7714	Cui, Yongsheng,Pan, Chengzhong,Ma, Lan,et al. Comparing water uptake patterns of two tree species using stable isotopes on the Loess Plateau, China[J],2023,37(10).
APA	Cui, Yongsheng,Pan, Chengzhong,Ma, Lan,&Sun, Zhanwei.(2023).Comparing water uptake patterns of two tree species using stable isotopes on the Loess Plateau, China.HYDROLOGICAL PROCESSES,37(10).
MLA	Cui, Yongsheng,et al."Comparing water uptake patterns of two tree species using stable isotopes on the Loess Plateau, China".HYDROLOGICAL PROCESSES 37.10(2023).