气候变化领域集成服务门户(CCPortal): Contrasting responses of hydraulic traits between leaf and branch to 16-year nitrogen addition in a larch plantation

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DOI	10.1016/j.foreco.2020.118461
	Contrasting responses of hydraulic traits between leaf and branch to 16-year nitrogen addition in a larch plantation
	Jin Y.; Wang C.; Zhou Z.; Gu J.
发表日期	2020
ISSN	0378-1127
卷号	475
英文摘要	Nitrogen (N) deposition can influence tree hydraulic architecture and water relations that interactively affect tree growth and forest productivity, but responses of tree hydraulic traits to long-term N addition are poorly understood. Here, we examined the effects of 16-year N addition on the hydraulic traits of both leaves and branches of Larix gmelinii in northeastern China. We found that N addition decreased the hydraulic conductivity and vulnerability to cavitation of branches, which were associated with a positive response of the wood density. Conversely, N addition significantly increased the hydraulic conductance and vulnerability to cavitation of leaves. A trade-off between hydraulic efficiency and safety was observed in both leaves and branches. N addition induced a stronger vulnerability segmentation compared to the control trees, implying that the larch trees may acclimate to long-term N addition with a safer hydraulic strategy. Overall, our findings of the contrasting responses of the hydraulic traits between the leaves and branches and the increased vulnerability segmentation to the long-term N addition may be beneficial for the larch trees to adapt to the escalating global N deposition and climate change. © 2020 Elsevier B.V.
英文关键词	Hydraulic trait; Larix gemelinii; Nitrogen deposition; Vulnerability segmentation; Vulnerability to cavitation
语种	英语
scopus关键词	Cavitation; Climate change; Deposition; Economic and social effects; Nitrogen; Forest productivity; Hydraulic architecture; Hydraulic conductance; Hydraulic efficiency; Larch plantations; Nitrogen additions; Water relations; Wood density; Forestry; deciduous forest; forestry production; growth; hydraulic conductivity; hydrological response; leaf; nitrogen; plantation forestry; stem; Branches; Cavitation; Deposition; Forestry; Leaves; Nitrogen; Vulnerability; Wood Density; China; Larix; Larix gmelinii
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155031
作者单位	Center for Ecological Research, Northeast Forestry University, 26 Hexing Road, Harbin, 150040, China; Key Laboratory of Sustainable Forest Ecosystem Management - Ministry of Education, Northeast Forestry University, Harbin, 150040, China; School of Forestry, Northeast Forestry University, 26 Hexing Road, Harbin, 150040, China
推荐引用方式 GB/T 7714	Jin Y.,Wang C.,Zhou Z.,et al. Contrasting responses of hydraulic traits between leaf and branch to 16-year nitrogen addition in a larch plantation[J],2020,475.
APA	Jin Y.,Wang C.,Zhou Z.,&Gu J..(2020).Contrasting responses of hydraulic traits between leaf and branch to 16-year nitrogen addition in a larch plantation.Forest Ecology and Management,475.
MLA	Jin Y.,et al."Contrasting responses of hydraulic traits between leaf and branch to 16-year nitrogen addition in a larch plantation".Forest Ecology and Management 475(2020).