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Seasonal variation in water uptake patterns of three plant species based on stable isotopes in the semi-arid Loess Plateau
Wang, Jian1; Fu, Bojie; Lu, Nan; Zhang, Li2
2017
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
卷号609页码:27-37
摘要Water is a limiting factor and significant driving force for ecosystem processes in arid and semi-arid areas. Knowledge of plant water uptake pattern is indispensable for understanding soil-plant interactions and species coexistence. The 'Grain for Green' project that started in 1999 in the Loess Plateau of China has led to large scale vegetation change. However, little is known about the water uptake patterns of the main plant species that inhabit in this region. In this study, the seasonal variations in water uptake patterns of three representative plant species, Stipa bungeana, Artemisia gmelinii and Vitex negundo, that are widely distributed in the semi-arid area of the Loess Plateau, were identified by using dual stable isotopes of delta H-2 and delta O-18 in plant and soil water coupled with a Bayesian mixing model MixSIAR. The soil water at the 0-120 cm depth contributed 79.54 +/- 6.05% and 79.94 +/- 8.81% of the total water uptake of S. bungeana and A. gmelinii, respectively, in the growing season. The 0-40 cm soil contributed the most water in July (74.20 +/- 15.20%), and the largest proportion of water (33.10 +/- 15.20%) was derived from 120-300 cm soils in August for A. gmelinii. However, V. negundo obtained water predominantly from surface soil horizons (0-40 cm) and then switched to deep soil layers (120-300 cm) as the season progressed. This suggested that V. negundo has a greater degree of ecological plasticity as it could explore water sources from deeper soils as the water stress increased. This capacity can mainly be attributed to its functionally dimorphic root system. V. negundo may have a competitive advantage when encountering short-term drought. The ecological plasticity of plant water use needs to be considered in plant species selection and ecological management and restoration of the arid and semi-arid ecosystems in the Loess Plateau. (C) 2017 Elsevier B.V. All rights reserved.
关键词Water uptake pattern MixSIAR Dual stable isotopes Loess Plateau Root distribution
学科领域Biochemistry & Molecular Biology ; Plant Sciences
DOI10.1080/15592324.2017.1365213
收录类别SCI
语种英语
WOS关键词RATIO MASS-SPECTROMETRY ; DIFFERENT LAND-COVER ; SOIL-WATER ; INFRARED-SPECTROSCOPY ; ROOT MORPHOLOGY ; USE STRATEGIES ; DESERT SHRUBS ; IN-DEPTH ; CHINA ; TREES
WOS记录号WOS:000426264700014
出版者ELSEVIER SCIENCE BV
文献子类Article
出版地AMSTERDAM
EISSN1879-1026
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [NSFC 41390462, 41230745]
作者邮箱nanlv@rcees.ac.cn
作品OA属性Green Published, Bronze
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/22105
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714
Wang, Jian,Fu, Bojie,Lu, Nan,et al. Seasonal variation in water uptake patterns of three plant species based on stable isotopes in the semi-arid Loess Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,609:27-37.
APA Wang, Jian,Fu, Bojie,Lu, Nan,&Zhang, Li.(2017).Seasonal variation in water uptake patterns of three plant species based on stable isotopes in the semi-arid Loess Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,609,27-37.
MLA Wang, Jian,et al."Seasonal variation in water uptake patterns of three plant species based on stable isotopes in the semi-arid Loess Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 609(2017):27-37.
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