Field evidence reveals conservative water use of poplar saplings under high aerosol conditions
文献类型：期刊论文
| 作者 | Wang, Bin3; Wang, Zhenhua3; Wang, Chengzhang3; Wang, Xin; Li, Jing3; Jia, Zhou3; Li, Ping3; Wu, Jin1; Chen, Min4; Liu, Lingli3
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| 刊名 | JOURNAL OF ECOLOGY
 |
| 出版日期 | 2021 |
| 卷号 | 109期号:5页码:2190-2202 |
| 关键词 | aerosols diffuse radiation ecophysiology leaf transpiration sap flow stomatal conductance sun and shade leaves vapour pressure deficit |
| ISSN号 | 0022-0477 |
| DOI | 10.1111/1365-2745.13633 |
| 文献子类 | Article |
| 英文摘要 | Anthropogenic aerosols could alter multiple meteorological processes such as radiation regime and air temperature, thereby modifying plant transpiration. However, the lack of field observations at leaf and plant level hinders our ability to understand how aerosols could affect plant water use. Aerosol concentrations in northern China fluctuate periodically over a wide range. Taking advantage of this unique natural experiment opportunity, we conducted a series of physiological and environmental measurements at different times of the day to explore diurnal aerosols' effect on leaf transpiration and sap flow of planted poplar saplings (Populus x canadensis Moench). We found that high aerosol concentrations suppressed sun leaf transpiration by reducing leaf-to-air vapour pressure deficit (VPDleaf), while had no effect on shade leaf transpiration mainly because the negative effect of reduced VPDleaf on transpiration offset the positive effects of the increased stomatal conductance (g(s)). As aerosol concentration increased, the g(s) of both sun and shade leaves decreased more rapidly with an increase in VPDleaf, which caused their transpiration rates to become less sensitive to VPDleaf. Similarly, aerosols reduced sap flow density and its sensitivity to VPD. Synthesis. Our study provided observational evidence on aerosols' effects on plant transpiration at the leaf and canopy scales. The reduced transpiration and stronger stomatal control indicated that plant water use becomes more conservative under elevated aerosol concentrations. |
| 学科主题 | Plant Sciences ; Ecology |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1365-2745 |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000628849900001 |
| 出版者 | WILEY |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences [XDA23080301] ; National Natural Science Foundation of China [31522011, 31600389, 31670478, 31988102] ; Youth Innovation Promotion Association of the Chinese Academy of Science [2020082] ; CAS Interdisciplinary Innovation Team [JCTD-2018-06] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/26395]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Pacific Northwest Natl Lab, Joint Global Change Res Inst, College Pk, MD USA 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 4.Univ Hong Kong, Sch Biol Sci, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Bin,Wang, Zhenhua,Wang, Chengzhang,et al. Field evidence reveals conservative water use of poplar saplings under high aerosol conditions[J]. JOURNAL OF ECOLOGY,2021,109(5):2190-2202. |
| APA | Wang, Bin.,Wang, Zhenhua.,Wang, Chengzhang.,Wang, Xin.,Li, Jing.,...&Liu, Lingli.(2021).Field evidence reveals conservative water use of poplar saplings under high aerosol conditions.JOURNAL OF ECOLOGY,109(5),2190-2202. |
| MLA | Wang, Bin,et al."Field evidence reveals conservative water use of poplar saplings under high aerosol conditions".JOURNAL OF ECOLOGY 109.5(2021):2190-2202. |
入库方式： OAI收割
来源：植物研究所
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