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Soil water use sources and patterns in shrub encroachment in semiarid grasslands of Inner Mongolia

文献类型：期刊论文

作者Liu, Xin1; Zhuang, Qianlai2,3; Lai, Liming; Zhou, Jihua; Sun, Qinglin1; Yi, Sangui1; Liu, Benben1; Zheng, Yuanrun
刊名AGRICULTURAL AND FOREST METEOROLOGY
出版日期2021
卷号308
关键词Shrub encroachment Stable delta O-18 isotope Proportional similarity index Root vertical distribution Water use sources Hydrological niche
ISSN号0168-1923
DOI10.1016/j.agrformet.2021.108579
文献子类Article
英文摘要Soil water sources for shrub encroachment in arid and semiarid regions have not been fully understood. This study used stable delta H-2 and delta O-18 isotope ratios of plants, soil water and precipitation, coupled with proportional similarity index of species to identify relations between shrub encroachment and water sources for four shrub and grass species at various shrub encroachment stages in a semiarid grassland of Inner Mongolia. We found that shallow rooted grasses (Agriophyllum squarrosum and Stipa bungeana) predominantly used shallow soil water (0-20 cm) during growing season. In contrast, deeply-rooted semi-shrubs (Artemisia ordosica and Artemisia sphaerocephala) used middle and deep soil water in July but shallow and middle soil depth water in May and September. Plants competition for soil water in different shrub encroachment stages were different depending on plant water use sources. The highest plant competition existed in the A. ordosica community in semi-fixed sandy land, followed by A. squarrosum community in shifting sandy land, A. ordosica community in fixed sandy land, and S. bungeana community in fixed sandy land. Competition for soil water and differences of water use sources of grass and shrub species were crucial in driving shrub encroachment in semiarid grasslands. Communities dominated by A. ordosica were not stable, with an increase in surface soil water availability, the dominance was replaced by S. bungeana. Our findings on the linkage between plant water use sources and patterns and shrub encroachment shall help future arid and semiarid grassland management under changing climate conditions.
学科主题Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
出版地AMSTERDAM
电子版国际标准刊号1873-2240
WOS关键词WOODY PLANT ENCROACHMENT ; ISOTOPE MIXING MODELS ; STABLE-ISOTOPES ; USE STRATEGIES ; ECOSYSTEM ; DROUGHT ; DESERT ; DEPTH ; DESERTIFICATION ; FACILITATION
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000692679900040
出版者ELSEVIER
资助机构National Natural Science Foundation of China [41330749]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/26595]  
专题中科院北方资源植物重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, Key Lab Resource Plants, West China Subalpine Bot Garden, 20 Nanxincun, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
4.Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA
推荐引用方式
GB/T 7714		 Liu, Xin,Zhuang, Qianlai,Lai, Liming,et al. Soil water use sources and patterns in shrub encroachment in semiarid grasslands of Inner Mongolia[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,308.
APA Liu, Xin.,Zhuang, Qianlai.,Lai, Liming.,Zhou, Jihua.,Sun, Qinglin.,...&Zheng, Yuanrun.(2021).Soil water use sources and patterns in shrub encroachment in semiarid grasslands of Inner Mongolia.AGRICULTURAL AND FOREST METEOROLOGY,308.
MLA Liu, Xin,et al."Soil water use sources and patterns in shrub encroachment in semiarid grasslands of Inner Mongolia".AGRICULTURAL AND FOREST METEOROLOGY 308(2021).

入库方式： OAI收割

来源：植物研究所

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