Changes of Light Components and Impacts on Interannual Variations of Photosynthesis in China Over 2000-2017 by Using a Two-Leaf Light Use Efficiency Model
文献类型：期刊论文
| 作者 | Yan, H.1 ; Wang, S. Q.2,3; Wang, J. B.2; Shugart, H. H.4
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
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| 出版日期 | 2020-12-01 |
| 卷号 | 125期号:12页码:18 |
| 关键词 | light components gross primary production light use efficiency big‐ leaf model two‐ leaf model |
| ISSN号 | 2169-8953 |
| DOI | 10.1029/2020JG005735 |
| 通讯作者 | Yan, H.(yanhaon@hotmail.com) |
| 英文摘要 | Diffuse radiation produces a higher light use efficiency (LUE) than does direct radiation. However, light components and their impacts on interannual variations of photosynthesis in China have not been intensively studied. We estimated gross primary production (GPP) from a two-leaf LUE model that incorporates a diffuse radiation effect and compared it with a big-leaf LUE model that ignores the diffuse radiation impact. The results show that a dimming occurred in China-the estimated annual photosynthetically active radiation (PAR) declined by -1.79 MJ m(-2) yr(-1). However, the diffuse fraction and diffuse PAR increased over this interval. Both GPP models simulated an increasing trend of GPP in China from 2000 to 2017. The big-leaf GPP model underestimated the increasing trend of GPP from the two-leaf GPP model by 6.4%. The diffuse fraction change during the dimming exerted an embedded positive impact relative to the big-leaf GPP trend in China. To evaluate the impact of total PAR versus its components on GPP, annual anomaly percentage (A(p)) of GPP shows that the big-leaf GPP model had a positive correlation between A(p) of GPP and PAR across China. Considering the diffuse radiation impact, A(p) of two-leaf GPP was negatively correlated with PAR in southern China, which had a higher leaf area index (2.02) and a greater diffuse fraction (0.63). Strong diffuse radiation effects in southern China produced GPP anomalies in opposition to the direction of the PAR changes. These findings highlight the distinctive impact of light components on interannual variations of plant photosynthesis. |
| WOS关键词 | NET PRIMARY PRODUCTION ; GLOBAL PRIMARY PRODUCTION ; RADIATION-USE EFFICIENCY ; PRIMARY PRODUCTIVITY NPP ; LEAF-AREA INDEX ; SOLAR-RADIATION ; DIFFUSE-RADIATION ; AEROSOL ; VARIABILITY ; FRACTION |
| 资助项目 | National Key Research and Development Program of China[2017YFC0503803] ; National Natural Science Foundation of China[41571327] ; National Natural Science Foundation of China[41171284] ; National Aeronautics and Space Administration (NASA)[10CARBON10-0068] ; National Aeronautics and Space Administration (NASA)[Climate Change/09-IDS09-116] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000603282000011 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Aeronautics and Space Administration (NASA) |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/136522]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yan, H. |
| 作者单位 | 1.China Meteorol Adm, Natl Meteorol Ctr, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 4.Univ Virginia, Dept Environm Sci, Clark Hall, Charlottesville, VA 22903 USA |
| 推荐引用方式 GB/T 7714 | Yan, H.,Wang, S. Q.,Wang, J. B.,et al. Changes of Light Components and Impacts on Interannual Variations of Photosynthesis in China Over 2000-2017 by Using a Two-Leaf Light Use Efficiency Model[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2020,125(12):18. |
| APA | Yan, H.,Wang, S. Q.,Wang, J. B.,&Shugart, H. H..(2020).Changes of Light Components and Impacts on Interannual Variations of Photosynthesis in China Over 2000-2017 by Using a Two-Leaf Light Use Efficiency Model.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(12),18. |
| MLA | Yan, H.,et al."Changes of Light Components and Impacts on Interannual Variations of Photosynthesis in China Over 2000-2017 by Using a Two-Leaf Light Use Efficiency Model".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.12(2020):18. |
入库方式： OAI收割
来源：地理科学与资源研究所
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