干旱区生态环境知识资源中心(Arid): Age-related water uptake patterns of alpine plantation shrubs in reforestation region of Qinghai-Tibetan Plateau based on stable isotopes

Arid

DOI	10.1002/eco.2049
	Age-related water uptake patterns of alpine plantation shrubs in reforestation region of Qinghai-Tibetan Plateau based on stable isotopes
	Wu, Huawu 1,2; Li, Xiao-Yan 3; Li, Jing 4; Zhang, Cicheng 3; He, Bin 1; Zhang, Siyi 5; Sun, Wei 1
通讯作者	Wu, Huawu ; Sun, Wei
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2019
卷号	12 期号:1
英文摘要	Sea buckthorn (Hippophae rhamnoides L.) plantations play crucial roles in the prevention of soil erosion and control of desertification on the Qinghai-Tibetan Plateau; however, the limited information on the age-related water uptake patterns of H. rhamnoides and their relationships with associated grasses species weakens our understanding of how these factors influence the management of H. rhamnoides plantations. Therefore, this study investigated the seasonal variations in water uptake patterns of different-aged H. rhamnoides and their associated species via stable isotopes and leaf water potential analyses. The model results showed that seedling (Hs) and juvenile (Hj) H. rhamnoides extracted water mainly from shallow and middle soil layers throughout the growing seasons, whereas mature H. rhamnoides (Hm) exhibited high plasticity, shifting water source between shallow soil water and groundwater when the former become less available. By contrast, the associated grasses (Taraxacum mongolicum, Thermopsis lanceolata, and Polygonum sibiricum) mainly absorbed shallow soil water across the whole growing seasons, suggesting that direct competition for shallow soil water occurred between grasses and H. rhamnoides. In addition, the obviously higher delta C-13 values of Hj with more negative predawn (mean psi(pd), -1.37 MPa) and midday (mean psi(md), -2.23 MPa) leaf water potential indicated the Hj experienced greater water stress relative to Hs and Hm. These results provide new understanding of the seasonal water use strategies of different-aged H. rhamnoides, which will be important for the successful management of plantations in this region.
英文关键词	leaf water potential Qinghai Lake watershed reforestation management root distribution stable isotopes
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000454601400001
WOS关键词	SYLVESTRIS VAR. MONGOLICA ; HIPPOPHAE-RHAMNOIDES ; TREE SIZE ; DESERT ; LEAF ; GRASSLAND ; ECOSYSTEM ; DROUGHT ; GROWTH ; CARBON
WOS类目	Ecology ; Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215127
作者单位	1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Key Lab Watershed Geog Sci, Nanjing 210008, Jiangsu, Peoples R China; 2.Gansu Agr Univ, Minist Educ, Key Lab Grassland Ecosyst, Lanzhou, Gansu, Peoples R China; 3.Beijing Normal Univ, Fac Geog Sci, Sch Nat Resources, Beijing, Peoples R China; 4.Jiujiang Coll, Tourism Sch, Jiujiang, Peoples R China; 5.Guangdong Inst Ecoenvironm Sci & Technol, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wu, Huawu,Li, Xiao-Yan,Li, Jing,et al. Age-related water uptake patterns of alpine plantation shrubs in reforestation region of Qinghai-Tibetan Plateau based on stable isotopes[J]. 北京师范大学,2019,12(1).
APA	Wu, Huawu.,Li, Xiao-Yan.,Li, Jing.,Zhang, Cicheng.,He, Bin.,...&Sun, Wei.(2019).Age-related water uptake patterns of alpine plantation shrubs in reforestation region of Qinghai-Tibetan Plateau based on stable isotopes.ECOHYDROLOGY,12(1).
MLA	Wu, Huawu,et al."Age-related water uptake patterns of alpine plantation shrubs in reforestation region of Qinghai-Tibetan Plateau based on stable isotopes".ECOHYDROLOGY 12.1(2019).