Seasonal variations and environmental control of water use efficiency in subtropical plantation
文献类型：SCI/SSCI论文
| 作者 | Song X. ; Yu G. R. ; Liu Y. F. ; Sun X. M. ; Lin Y. M. ; Wen X. F. |
| 发表日期 | 2006 |
| 关键词 | water use efficiency gross primary production canopy evapotranspiration canopy conductance eddy covariance stomatal behavior flux measurement co2 enrichment photosynthesis drought transpiration ecosystem assimilation conductance responses |
| 英文摘要 | To understand the seasonal variations of water use efficiency (WUE) of coniferous plantation in the subtropical monsoon area, the experiment was conducted in 2003 and 2004 which presented two distinguished climatic conditions (severe summer drought in 2003 and normal climatic condition in 2004). The water stress influenced WUE greatly, which caused a special seasonal WUE pattern. WUE reached the minimum in summer drought and the maximum in winter, which was contrary to the variation of gross primary production (GPP) and canopy evaporation (Fw). In winter, GPP and Fw increased along with the increasing of air temperature and vapor pressure deficit (VPD), with the similar increasing rate. However, in drought summer, there was an adverse trend among GPP/Fw and air temperature and VPD, and the decreasing rate of GPP was far larger than that of Fw. In summer, the conservation of WUE was changed because of the environmental factors, resulting in the decreasing WUE. The photosynthesis and transpiration of vegetation were mainly controlled by the environmental factors in winter, and the impact of stomatal regulation was relatively weak. In summer, Fw was mainly controlled by the stomatal closure and GPP by both, environmental factors and stomatal closure. |
| 出处 | Science in China Series D-Earth Sciences |
| 卷 | 49 |
| 页 | 119-126 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1006-9313 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23060]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Song X.,Yu G. R.,Liu Y. F.,et al. Seasonal variations and environmental control of water use efficiency in subtropical plantation. 2006. |
入库方式： OAI收割
来源：地理科学与资源研究所
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