Age-related water use characteristics of Robinia pseudoacacia on the Loess Plateau
文献类型：期刊论文
| 作者 | Wang, Jian; Fu, Bojie ; Jiao, Lei; Lu, Nan; Li, Jianye; Chen, Weiliang; Wang, Lixin
|
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2021-05-15 |
| 卷号 | 301页码:- |
| ISSN号 | 0168-1923 |
| 关键词 | O, H, C stable isotopes Plant water uptake Water use efficiency Stand age Ecological restoration Loess Plateau |
| 英文摘要 | Understanding water use characteristics of revegetation species is crucial for evaluating plant adaptability and guiding the sustainability of vegetation restoration in semiarid regions. Ecological restoration projects have been implemented for decades in degraded ecosystems, achieving significant changes in vegetation cover. However, water use characteristics of the main tree species at different ages remain poorly understood in such systems. We investigated water use characteristics of Robinia pseudoacacia in plantations of different stand-age (18 and 30 years). The species is the most widely planted tree in revegetation efforts on the Loess Plateau. The delta H-2 and delta O-18 of xylem and soil water within 500 cm of the soil surface and the delta C-13 values of plant leaves were measured during two consecutive hydrological years. The results showed that that water uptake proportions from across the soil columns changed in 18-yr R. pseudoacacia between a drier (2016) and wetter year (2017). In contrast, shallow soil water was largely comparable in a stand of 30-yr R. pseudoacacia in 2016 and 2017, and similarly the pattern of water uptake by roots from the middle and deep soil column was comparable. However, leaf-level water use efficiency (WUEi) of trees in the older plantation was higher during the wetter year, thereby partly alleviating a low infiltration to precipitation ratio. These findings suggest that different stand-age plantation trees have distinct water use characteristics and display different responses to variations in precipitation. Older plantation trees respond to increased water availability by increasing WUEi instead of switching water sources. This means that stand-age is an essential factor to be considered in ecological restoration management, which can enhance the effectiveness of vegetation restoration strategies. The study indicates useful input from research to management throughout the continuity of restoration effort. |
| WOS研究方向 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45406]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Mollisols Agroecol, Harbin 150081, Peoples R China 2.Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 5.Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Peoples R China 6.Indiana Univ Purdue Univ Indianapolis IUPUI, Dept Earth Sci, 723 W Michigan St,SL 118M, |
| 推荐引用方式 GB/T 7714 | Wang, Jian,Fu, Bojie,Jiao, Lei,et al. Age-related water use characteristics of Robinia pseudoacacia on the Loess Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,301:-. |
| APA | Wang, Jian.,Fu, Bojie.,Jiao, Lei.,Lu, Nan.,Li, Jianye.,...&Wang, Lixin.(2021).Age-related water use characteristics of Robinia pseudoacacia on the Loess Plateau.AGRICULTURAL AND FOREST METEOROLOGY,301,-. |
| MLA | Wang, Jian,et al."Age-related water use characteristics of Robinia pseudoacacia on the Loess Plateau".AGRICULTURAL AND FOREST METEOROLOGY 301(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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