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Patterns and drivers of seasonal water sources for artificial sand-fixing plants in the northeastern Mu Us sandy land, Northwest China

文献类型：期刊论文

作者Pei, Yanwu1,2; Huang, Laiming1,3,4; Shao, Mingan1,2,3; Wang, Jiao1,3; Zhang, Yinglong5
刊名PEDOSPHERE
出版日期2024-02-01
卷号34期号:1页码:63-77
关键词desert ecosystem MixSIAR model plant water uptake soil moisture stable isotopes vegetation restoration water-use efficiency
ISSN号1002-0160
DOI10.1016/j.pedsph.2023.03.007
通讯作者Huang, Laiming(huanglm@igsnrr.ac.cn)
英文摘要Understanding plant water-use patterns is important for improving water-use efficiency and for sustainable vegetation restoration in arid and semi-arid regions. However, seasonal variations in water sources and their control by different sand-fixing plants in water-limited desert ecosystems remain poorly understood. In this study, stable isotopic ratios of hydrogen (delta H-2) and oxygen (delta O-18) in precipitation, soil water, groundwater, and xylem water were determined to document seasonal changes in water uptake by three representative plant species (Pinus sylvestris var. mongolica Litv., Amygdalus pedunculata Pall., and Salix psammophila) in the northeastern Mu Us sandy land, Northwest China. Based on the depth distribution and temporal variation of measured gravimetric soil water content (SWC), the soil water profile of the three species stands was divided into active (0.01 g g(-1) < SWC < 0.08 g g(-1), 20% < coefficient of variation (CV) < 45%), stable (0.02 g g(-1) < SWC < 0.05 g g(-1), CV < 20%), and moist (0.08 g g(-1) < SWC < 0.20 g g(-1), CV > 45%) layers. Annually, P. sylvestris, A. pedunculata, and S. psammophila obtained most water from deep (59.2% +/- 9.7%, moist layer and groundwater), intermediate (57.4% +/- 9.8%, stable and moist layers), and shallow (54.4% +/- 10.5%, active and stable layers) sources, respectively. Seasonally, the three plant species absorbed more than 60% of their total water uptake from the moist layer and groundwater in the early (June) dry season; then, they switched to the active and stable layers in the rainy season (July-September) for water resources (50.1%-62.5%). In the late (October-November) dry season, P. sylvestris (54.5%-66.2%) and A. pedunculata (52.9%-63.6%) mainly used water from stable and moist layers, whereas S. psammophila (52.6%-70.7%) still extracted water predominantly from active and stable layers. Variations in the soil water profile induced by seasonal fluctuations in precipitation and groundwater levels and discrepancies in plant phenology, root distribution, and water demand are the main factors affecting the seasonal water-use patterns of artificial sand-fixing plants. Our study addresses the issue of plant water uptake with knowledge of proportional source-water use and reveals important implications for future vegetation restoration and water management in the Mu Us sandy land and similar desert regions around the world.
WOS关键词RATIO MASS-SPECTROMETRY ; STABLE-ISOTOPE ANALYSIS ; RING-DOWN SPECTROSCOPY ; VAR. MONGOLICA TREES ; SOIL-WATER ; DIFFERENT AGES ; IN-DEPTH ; DESERT ; GROUNDWATER ; VEGETATION
资助项目National Natural Science Foundation of China[42377302] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2019052] ; Bingwei Outstanding Young Talent Project from the Institute of Geographical Sciences and Natural Resources Research, China[2017RC203] ; Open Foundation of State Key Laboratory of Urban and Regional Ecology, China[SKLURE2023-2-2]
WOS研究方向Agriculture
语种英语
WOS记录号WOS:001186864000001
出版者SCIENCE PRESS
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Bingwei Outstanding Young Talent Project from the Institute of Geographical Sciences and Natural Resources Research, China ; Open Foundation of State Key Laboratory of Urban and Regional Ecology, China
源URL[http://ir.igsnrr.ac.cn/handle/311030/203697]  
专题中国科学院地理科学与资源研究所
通讯作者Huang, Laiming
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Yellow River Delta Modern Agr Engn Lab, Beijing 100101, Peoples R China
2.Northwest Agr & Forestry Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China
3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
5.Shenmu Ecol Assoc, Shenmu 719399, Peoples R China
推荐引用方式
GB/T 7714		 Pei, Yanwu,Huang, Laiming,Shao, Mingan,et al. Patterns and drivers of seasonal water sources for artificial sand-fixing plants in the northeastern Mu Us sandy land, Northwest China[J]. PEDOSPHERE,2024,34(1):63-77.
APA Pei, Yanwu,Huang, Laiming,Shao, Mingan,Wang, Jiao,&Zhang, Yinglong.(2024).Patterns and drivers of seasonal water sources for artificial sand-fixing plants in the northeastern Mu Us sandy land, Northwest China.PEDOSPHERE,34(1),63-77.
MLA Pei, Yanwu,et al."Patterns and drivers of seasonal water sources for artificial sand-fixing plants in the northeastern Mu Us sandy land, Northwest China".PEDOSPHERE 34.1(2024):63-77.

入库方式： OAI收割

来源：地理科学与资源研究所

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