High aerosol loading decreases the transpiration of poplars both in the day- and night-time
文献类型：期刊论文
| 作者 | Wang, Bin3,4; Wang, Chengzhang3; Wang, Zhenhua3,5; Wang, Xin; Jia, Zhou3; Liu, Lingli1,3 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022 |
| 卷号 | 327 |
| ISSN号 | 0168-1923 |
| 关键词 | Aerosol Stem sap flow Nocturnal transpiration Radiation Vapor pressure deficit |
| DOI | 10.1016/j.agrformet.2022.109225 |
| 文献子类 | Article |
| 英文摘要 | Aerosols alter plant photosynthesis and ecosystem carbon uptake through radiative effects. These effects inevi-tably change plant transpiration and ecosystem water use as CO2 and water exchange couple through leaf sto-matal conductance. However, because of lacking field observations, we know poorly about how elevated aerosols could affect plant transpiration, which greatly hinders our confidence in projecting aerosol's climate impacts. In this study, taking the advantage of aerosol loading in northern China fluctuated periodically over a wide range, we conducted five year-site observations of the stem sap flow of poplar saplings (Populus euramericana Neva.), and simultaneously monitored environmental factors such as PM2.5 concentration, total and diffuse radiation, air temperature, humidity, and soil water content. These observations enabled us to comprehensively explore how aerosols affect the daily dynamics of plant canopy transpiration in the field. We found that high aerosol loading significantly decreased the sap flow density of poplars both in the day-and night-time, indicating that aerosols decreased canopy transpiration. Furthermore, during the day-time, a reduction in total solar radiation and moisture demand (vapor pressure deficit, VPD) dominated the decrease of sap flow density, but an increase in diffuse radiation had an insignificant impact. In the night-time, VPD significantly decreased under high aerosol loading conditions, thereby reducing nocturnal sap flow density. Our in-situ observations revealed that different from the positive response of canopy photosynthesis associated with the diffuse fertilization effect, aerosols inhibit canopy transpiration mainly because of the declined VPD. Our findings highlighted that plant carbon and water fluxes are governed by different meteorological factors under elevated aerosol. |
| 学科主题 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
| 电子版国际标准刊号 | 1873-2240 |
| 出版地 | AMSTERDAM |
| WOS关键词 | SAP FLOW ; NOCTURNAL TRANSPIRATION ; DIFFUSE-RADIATION ; WATER ; CLIMATE ; FOREST ; PARTICLES ; EXCHANGE ; IMPACT ; FLUXES |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000880770600001 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science ; [32125025] ; [32171500] ; [31988102] ; [XDA23080301] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28963]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Ningde Normal Univ, Sch Life Sci, Engn Technol Res Ctr Characterist Med Plants Fujia, Ningde 352106, Fujian, Peoples R China 2.Chinese Acad Sci, Inst Bot, 20 Nanxincun, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Nanjing Univ Informat Sci & Technol NUIST, Sch Environm Sci & Engn, Collaborat Innovat Ctr Atmospher Environm & Equipm, Jiangsu Key Lab Atmospher Environm Monitoring & Po, Nanjing 210044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Bin,Wang, Chengzhang,Wang, Zhenhua,et al. High aerosol loading decreases the transpiration of poplars both in the day- and night-time[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,327. |
| APA | Wang, Bin,Wang, Chengzhang,Wang, Zhenhua,Wang, Xin,Jia, Zhou,&Liu, Lingli.(2022).High aerosol loading decreases the transpiration of poplars both in the day- and night-time.AGRICULTURAL AND FOREST METEOROLOGY,327. |
| MLA | Wang, Bin,et al."High aerosol loading decreases the transpiration of poplars both in the day- and night-time".AGRICULTURAL AND FOREST METEOROLOGY 327(2022). |
入库方式： OAI收割
来源：植物研究所
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