Vertical distribution of gas exchanges and their integration throughout the entire canopy in a maize field
文献类型：期刊论文
| 作者 | Xu, Zhenzhu ; Zhou, Guangsheng2; He, Qijin3
|
| 刊名 | PHOTOSYNTHESIS RESEARCH
 |
| 出版日期 | 2021 |
| 卷号 | 147期号:3页码:269-281 |
| 关键词 | Vertical distribution Carbon exchange Eddy covariance Stomatal conductance Evapotranspiration Maize canopy |
| ISSN号 | 0166-8595 |
| DOI | 10.1007/s11120-020-00817-9 |
| 文献子类 | Article |
| 英文摘要 | Fluxes of carbon and water along a vertical profile within a canopy, particularly the associations between canopy and ecosystem levels, are not well studied. In this study, gas exchange along the vertical profile in a maize canopy was examined. The relationships between leaf- and ecosystem-level carbon and water fluxes were compared. The results from research conducted over two growing seasons showed that during vegetative growth, the top and middle leaf layers in the canopy contribute most to the carbon and water fluxes of the entire canopy. During the grain-filling stage, gas exchange processes were performed mostly in the middle leaves with and near the ears. Significant relationships were observed between the net ecosystem CO2 exchange rate (NEE) plus soil respiration and the assumed canopy levels (A(canopy)) and between evapotranspiration rates at the ecosystem (ET) and assumed canopy levels (E-canopy). This highlights the close associations between these parameters by integrating the leaf gas exchange rates measured in a conventional leaf cuvette and those at the ecosystem level via the eddy covariance technique. These results improve our understanding of how carbon assimilation varies vertically within a canopy, highlighting the critical role of ear leaves. |
| 学科主题 | Plant Sciences |
| 出版地 | DORDRECHT |
| 电子版国际标准刊号 | 1573-5079 |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000612613600001 |
| 出版者 | SPRINGER |
| 资助机构 | National Key Research and Development Program of China [2016YFD0300106] ; China Special Fund for Meteorological Research in the Public Interest [GYHY201506001-3] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/26415]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Zhenzhu,Zhou, Guangsheng,He, Qijin. Vertical distribution of gas exchanges and their integration throughout the entire canopy in a maize field[J]. PHOTOSYNTHESIS RESEARCH,2021,147(3):269-281. |
| APA | Xu, Zhenzhu,Zhou, Guangsheng,&He, Qijin.(2021).Vertical distribution of gas exchanges and their integration throughout the entire canopy in a maize field.PHOTOSYNTHESIS RESEARCH,147(3),269-281. |
| MLA | Xu, Zhenzhu,et al."Vertical distribution of gas exchanges and their integration throughout the entire canopy in a maize field".PHOTOSYNTHESIS RESEARCH 147.3(2021):269-281. |
入库方式： OAI收割
来源：植物研究所
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