Water use strategies for two dominant tree species in pure and mixed plantations of the semiarid Chinese Loess Plateau

doi:10.1002/eco.1943

ISWC OpenIR > 水保所科研产出--SCI > 2018--SCI

	Water use strategies for two dominant tree species in pure and mixed plantations of the semiarid Chinese Loess Plateau
	Yakun Tang 1; Xu Wu 2,3; Yunming Chen 1; Jie Wen 1; Yuli Xie 1; Senbao Lu 1; Chen, YM (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
文章类型	Article
	2018
发表期刊	ECOHYDROLOGY
ISSN	1936-0584
通讯作者邮箱	ymchen@ms.iswc.ac.cn
卷号	11 期号:4
摘要	Understanding the water sources and physiological responses to soil moisture pulses for plantation species, particularly in mixed plantations, are essential to assess the water use strategy and vegetation restoration in semiarid regions. We used hydrogen stable isotopes in plant and soil water to determine the potential water sources for Pinus tabuliformis and Hippophae rhamnoides in both pure and mixed plantations in the semiarid Chinese Loess Plateau during the vigorous growing season (June-August) in 2016. Stomatal conductance (g(c)), midday leaf water potential ((m)) and photosynthetic rate (P-r) were measured concurrently to analyse the physiological response. The P.tabuliformis in the pure plantation depended largely on shallow and middle soil layers regardless of precipitation amount, permitting this species to maintain stable (m) at the expense of P-r through stomatal control. In contrast, H.rhamnoides in the pure plantation shifted its water source from shallow to deep soil layers following decreases in precipitation, allowing this species to maintain stable g(c) and P-r at the expense of (m). Thus, P.tabuliformis and H.rhamnoides displayed isohydric and anisohydric behaviour, respectively. Additionally, both species in mixed plantations largely absorbed water from shallow soil layers and shifted to deep soil layers when precipitation decreased. Mixed afforestation significantly reduced (p<.05) P-r for P.tabuliformis and (m) for H.rhamnoides. Although contrasting physiological responses were adopted by these species, the major proportion of water resources were competitively obtained from similar soil depthsindicating that their mixed afforestation requires further investigation.
关键词	Hydrogen Stable Isotope Physiological Response Soil Moisture Pulse Water Use Strategy
学科领域	Environmental Sciences & Ecology ; Water Resources
DOI	10.1002/eco.1943
收录类别	SCI
出版地	111 RIVER ST, HOBOKEN 07030-5774, NJ USA
语种	英语
WOS记录号	WOS:000434219200008
出版者	WILEY
项目资助者	National Natural Science Foundation of China [41501576] ; National Natural Science Foundation of China [41501576] ; China Special Fund for Meteorological Research in the Public Interest [GYHY201506001-3] ; China Special Fund for Meteorological Research in the Public Interest [GYHY201506001-3]
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/8238
专题	水保所科研产出--SCI_2018--SCI
通讯作者	Chen, YM (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yakun Tang,Xu Wu,Yunming Chen,et al. Water use strategies for two dominant tree species in pure and mixed plantations of the semiarid Chinese Loess Plateau[J]. ECOHYDROLOGY,2018,11(4).
APA	Yakun Tang.,Xu Wu.,Yunming Chen.,Jie Wen.,Yuli Xie.,...&Chen, YM .(2018).Water use strategies for two dominant tree species in pure and mixed plantations of the semiarid Chinese Loess Plateau.ECOHYDROLOGY,11(4).
MLA	Yakun Tang,et al."Water use strategies for two dominant tree species in pure and mixed plantations of the semiarid Chinese Loess Plateau".ECOHYDROLOGY 11.4(2018).

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