干旱区生态环境知识资源中心(Arid): Evidence of foliar water uptake in a conifer species

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DOI	10.1016/j.agwat.2021.106993
	Evidence of foliar water uptake in a conifer species
	Liu, Ziqiang; Zhang, Huan; Yu, Xinxiao; Jia, Guodong; Jiang, Jiang
通讯作者	Yu, XX ; Jia, GD (corresponding author), Beijing Forestry Univ, Key Lab Soil & Water Conservat & Desertificat Com, Minist Educ, Beijing 100083, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	255
英文摘要	Foliar water uptake (FWU) is the main mechanism used by herbaceous plants in arid areas to absorb small amounts of precipitation. It has an important ecological and hydrological effect for alleviating plant drought stress. However, it is unknown whether woody plants can absorb water through the leaves when water absorption via roots is insufficient. This study explored whether FWU exists and the FWU conditions in semi-humid rock mountainous areas. Isotopes were labeled to detect FWU under different soil water content (SWC) gradients (3.9-6.5%, 6.5-9.1%, 9.1-15.6%, 15.6-20.8%, and 20.8-26.0%) and different precipitation gradients (1 mm/h, 5 mm/h, 10 mm/h, and 15 mm/h) in simulated precipitation experiments with indoor potted plants. The results showed that FWU occurred in each treatment if the SWC <= 21.9% no matter the precipitation amount. Water absorption via FWU increased with the increase of precipitation intensity but decreased with the increase of SWC. The greatest ratios of FWU were 2.77% and 9.52% of precipitation intensity of 1 mm/h and 15 mm/h, respectively, in the 3.9-6.5% treatment. The precipitation absorbed by the leaves can be transported to the xylem or root system along the water potential gradient of leaves-branches-roots. The precipitation with reverse migration in branches and roots increased with the increase of the water potential gradient of leaves-branches-roots. These findings suggest that Platycladus orientalis can uptake water through roots and leaves, effectively alleviating drought stress. This study provides new insights into water use patterns and water migration in trees.
英文关键词	Foliar water uptake Stable isotope Precipitation Soil water Plantation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000687381100012
WOS关键词	HYDRAULIC REDISTRIBUTION ; PLANT ; FOREST ; DROUGHT ; RESPONSES ; ECOSYSTEM ; CLIMATE ; TRAITS ; MODEL ; TREES
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362363
作者单位	[Liu, Ziqiang; Jiang, Jiang] Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China; [Zhang, Huan; Yu, Xinxiao; Jia, Guodong] Beijing Forestry Univ, Key Lab Soil & Water Conservat & Desertificat Com, Minist Educ, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Liu, Ziqiang,Zhang, Huan,Yu, Xinxiao,et al. Evidence of foliar water uptake in a conifer species[J]. 北京林业大学,2021,255.
APA	Liu, Ziqiang,Zhang, Huan,Yu, Xinxiao,Jia, Guodong,&Jiang, Jiang.(2021).Evidence of foliar water uptake in a conifer species.AGRICULTURAL WATER MANAGEMENT,255.
MLA	Liu, Ziqiang,et al."Evidence of foliar water uptake in a conifer species".AGRICULTURAL WATER MANAGEMENT 255(2021).