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| Field evidences for the positive effects of aerosols on tree growth | |
Wang, Xin1; Wu, Jin2; Chen, Min3,4; Xu, Xiangtao5; Wang, Zhenhua1; Wang, Bin1; Wang, Chengzhang1; Piao, Shilong6; Lin, Weili7; Miao, Guofang8; Deng, Meifeng1; Qiao, Chunlian1; Wang, Jing1; Xu, Shan1; Liu, Lingli1
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| 2018 | |
| Source Publication | GLOBAL CHANGE BIOLOGY
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| ISSN | 1354-1013 |
| Volume | 24Issue:10Pages:4983-4992 |
| Abstract | Theoretical and eddy covariance studies demonstrate that aerosol-loading stimulates canopy photosynthesis, but field evidence for the aerosol effect on tree growth is limited. Here, we measured in situ daily stem growth rates of aspen trees under a wide range of aerosol-loading in China. The results showed that daily stem growth rates were positively correlated with aerosol-loading, even at exceptionally high aerosol levels. Using structural equation modeling analysis, we showed that variations in stem growth rates can be largely attributed to two environmental variables covarying with aerosol loading: diffuse fraction of radiation and vapor pressure deficit (VPD). Furthermore, we found that these two factors influence stem growth by influencing photosynthesis from different parts of canopy. Using field observations and a mechanistic photosynthesis model, we demonstrate that photosynthetic rates of both sun and shade leaves increased under high aerosol-loading conditions but for different reasons. For sun leaves, the photosynthetic increase was primarily attributed to the concurrent lower VPD; for shade leaves, the positive aerosol effect was tightly connected with increased diffuse light. Overall, our study provides the first field evidence of increased tree growth under high aerosol loading. We highlight the importance of understanding biophysical mechanisms of aerosol-meteorology interactions, and incorporating the different pathways of aerosol effects into earth system models to improve the prediction of large-scale aerosol impacts, and the associated vegetation-mediated climate feedbacks. |
| Keyword | aerosol loading aerosol-meteorology interactions canopy photosynthesis diffuse radiation mechanistic photosynthesis model sun shade leaf tree stem growth vapor pressure deficit |
| Subject Area | Biodiversity Conservation ; Ecology ; Environmental Sciences |
| DOI | 10.1111/gcb.14339 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | NET PRIMARY PRODUCTIVITY ; ATMOSPHERIC PARTICLES ; STOMATAL CONDUCTANCE ; DIFFUSE-RADIATION ; OAK FOREST ; CO2 FLUX ; PHOTOSYNTHESIS ; CLOUDS ; VARIABILITY ; CANOPY |
| WOS ID | WOS:000445728800040 |
| Publisher | WILEY |
| Subtype | Article |
| Publication Place | HOBOKEN |
| EISSN | 1365-2486 |
| Funding Organization | Chinese National Key Development Program for Basic Research [2014CB954003, 2017YFC0503900] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31522011, 31670478, 31600389, 31070430] ; United States Department of EnergyUnited States Department of Energy (DOE) [DE-SC0012704] |
| Corresponding Author Email | lingli.liu@ibcas.ac.cn |
| OA | Bronze, Green Submitted |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ibcas.ac.cn/handle/2S10CLM1/20509 |
| Collection | 植被与环境变化国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Brookhaven Natl Lab, Environm & Climate Sci Dept, New York, NY USA 4.Carnegie Inst Sci, Dept Global Ecol, Stanford, CA USA 5.Pacific Northwest Natl Lab, Joint Global Change Res Inst, Richland, WA 99352 USA 6.Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA 7.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing, Peoples R China 8.Minzu Univ China, Coll Life & Environm Sci, Beijing, Peoples R China 9.Univ Illinois, Dept Nat Resources & Environm Sci, Urbana, IL USA |
| Recommended Citation GB/T 7714 | Wang, Xin,Wu, Jin,Chen, Min,et al. Field evidences for the positive effects of aerosols on tree growth[J]. GLOBAL CHANGE BIOLOGY,2018,24(10):4983-4992. |
| APA | Wang, Xin.,Wu, Jin.,Chen, Min.,Xu, Xiangtao.,Wang, Zhenhua.,...&Liu, Lingli.(2018).Field evidences for the positive effects of aerosols on tree growth.GLOBAL CHANGE BIOLOGY,24(10),4983-4992. |
| MLA | Wang, Xin,et al."Field evidences for the positive effects of aerosols on tree growth".GLOBAL CHANGE BIOLOGY 24.10(2018):4983-4992. |
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| File Name/Size | DocType | Version | Access | License | ||
| Global Change Biolog（926KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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