干旱区生态环境知识资源中心(Arid): Seasonal effects of intercropping on tree water use strategies in semiarid plantations: Evidence from natural and labelling stable isotopes

Arid

DOI	10.1007/s11104-020-04477-5
	Seasonal effects of intercropping on tree water use strategies in semiarid plantations: Evidence from natural and labelling stable isotopes
	Huo, Gaopeng; Zhao, Xining; Gao, Xiaodong; Wang, Shaofei
通讯作者	Zhao, XN
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2020
卷号	453 期号:1-2 页码:229-243
英文摘要	Aims Intercropping in plantations can improve ecosystem services, but its potential effects on trees' water use and production are concerns due to increases in water scarcity related to climate change. The aim of this study was to address these concerns by exploring water uptake responses of jujube (Ziziphus jujuba Mill.) trees to intercropping and extremely dry periods on the semi-arid Loess Plateau of China. Methods Natural stable isotopes (H-2 and O-18) were analysed to characterize water use patterns of jujube trees and intercrops in the main tree and crop root overlap layer (ROL, 0-120 cm). 10% stable deuterated water was injected at three targeted depths (2, 3 and 4 m) to characterize the water uptake of jujube trees below the main root overlap layers (BOL). Results In ROL, intercropped jujube trees obtained higher proportions of water in shallower and deeper layers than monocultured jujube trees during wet and dry periods, respectively. Proportional contributions of soil layers to the trees' water uptake were positively correlated with the layers' water amount ratios (relative to the entire profile) in intercropped orchards but not in monoculture. In some extremely dry periods, intercropping resulted in jujube trees absorbing deeper water (up to 3 m) in BOL. Conclusions At the early stage of land-use change from plantation to agroforestry, intercrops induce jujube trees to absorb higher proportions of water from soil layers with high proportions of total water contents in ROL. The soil water in BOL is an important buffer for maintaining water supplies for tree growth in agroforestry systems in case of extreme drought.
英文关键词	Agroforestry systems Natural and stable-isotope-labelling techniques Water uptake patterns Extreme drought
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000564401500001
WOS关键词	UPTAKE PATTERNS ; SOIL-MOISTURE ; HELP IMPROVE ; AGROFORESTRY ; DEPTH ; PLANTS ; SYSTEM ; TRANSPORT ; DEUTERIUM ; ORCHARDS
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325909
作者单位	[Huo, Gaopeng; Zhao, Xining; Gao, Xiaodong; Wang, Shaofei] Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China; [Huo, Gaopeng] Univ Montpellier, SYST, CIRAD, INRAE,INRA,CIHEAM,Montpellier Supagro, F-34000 Montpellier, France; [Zhao, Xining; Gao, Xiaodong] Northwest A&F Univ, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Huo, Gaopeng,Zhao, Xining,Gao, Xiaodong,et al. Seasonal effects of intercropping on tree water use strategies in semiarid plantations: Evidence from natural and labelling stable isotopes[J]. 西北农林科技大学,2020,453(1-2):229-243.
APA	Huo, Gaopeng,Zhao, Xining,Gao, Xiaodong,&Wang, Shaofei.(2020).Seasonal effects of intercropping on tree water use strategies in semiarid plantations: Evidence from natural and labelling stable isotopes.PLANT AND SOIL,453(1-2),229-243.
MLA	Huo, Gaopeng,et al."Seasonal effects of intercropping on tree water use strategies in semiarid plantations: Evidence from natural and labelling stable isotopes".PLANT AND SOIL 453.1-2(2020):229-243.