How do plants share water sources in a rubber-tea agroforestry system during the pronounced dry season?
文献类型：期刊论文
| 作者 | Liu, Wenjie
|
| 刊名 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
 |
| 出版日期 | 2017 |
| 卷号 | 236期号:x页码:69-77 |
| 关键词 | Intercropped tea tree Plant water use pattern Water sharing Stable isotope Hydrological niche segregation Hydraulic redistribution |
| 中文摘要 | Extensive cultivation of rubber plantations in Xishuangbanna in southwest (SW) China has resulted in negative hydrological consequences, particularly drought, during the pronounced dry season. Although rubber-tea agroforestry is regarded as the most successful agroforestry system for improving the sustainability of rubber agriculture and environmental conservation, plant water use patterns and their related interactions have rarely been examined in such systems. How do coexisting plants compete and share water under water deficit remains to be explored. Therefore, we used stable isotope (delta D and delta O-18) methods to determine the spatial water use patterns of both rubber trees and tea trees in a rubber-tea agroforestry system during the pronounced dry season and explored the movement of soil water in this system. The results of the MixSIAR model (a Bayesian mixing model) indicated that tea trees primarily uptake water from the 5-30 cm soil layer (40.3%, on average), and rubber trees primarily uptake water from the 30-80 cm soil layer (35.3%, on average) and absorb soil water evenly along slopes during the dry season. These results suggest that rubber trees and tea trees have different but complementary water use patterns. We also observed that the soil of the uphill and downhill tea rows contained much more water; however, the collaborative hydraulic redistribution in the studied agroforestry system could redistribute the soil water along the slope and below the ground well. Therefore, soil drought on terraces can be alleviated during the dry season. Our results confirmed that the tea tree is an appropriate crop for intercropping with rubber trees when considering water sharing and water management and provided a practical analysis of water use benefits from a rubber agroforestry system during drought stress. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2017-03-08 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/10310]  |
| 专题 | 西双版纳热带植物园_2012年后新成立研究组 西双版纳热带植物园_恢复生态学组 |
| 通讯作者 | Liu, Wenjie |
| 推荐引用方式 GB/T 7714 | Liu, Wenjie. How do plants share water sources in a rubber-tea agroforestry system during the pronounced dry season?[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2017,236(x):69-77. |
| APA | Liu, Wenjie.(2017).How do plants share water sources in a rubber-tea agroforestry system during the pronounced dry season?.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,236(x),69-77. |
| MLA | Liu, Wenjie."How do plants share water sources in a rubber-tea agroforestry system during the pronounced dry season?".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 236.x(2017):69-77. |
入库方式： OAI收割
来源：西双版纳热带植物园
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