Knowledge Resource Center for Ecological Environment in Arid Area
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, Huawu1,2; Li, Xiao-Yan3; Li, Jing4; Zhang, Cicheng3; He, Bin1; Zhang, Siyi5; Sun, Wei1 | |
通讯作者 | Wu, Huawu ; Sun, Wei |
来源期刊 | ECOHYDROLOGY
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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). |
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