Improved Global Maps of the Optimum Growth Temperature, Maximum Light Use Efficiency, and Gross Primary Production for Vegetation
文献类型：期刊论文
| 作者 | Chen, Yongzhe; Feng, Xiaoming; Fu, Bojie ; Wu, Xutong; Gao, Zhen
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2021 |
| 卷号 | 126期号:4页码:e2020JG005651 |
| 关键词 | global GPP interaction between plants and environment light use efficiency model maximum light use efficiency optimum growth temperature |
| 英文摘要 | The optimum growth temperature (T-opt) and maximum light use efficiency (epsilon(max)) of terrestrial vegetation are closely related to plant photosynthesis in current and future Earth environments, yet little is known about their spatial distributions at the global scale. This study derived global maps of T-opt and epsilon(max) separately, under the light use efficiency (LUE) model framework by utilizing FLUXNET measurements and satellite-observed solar/sun-induced chlorophyll fluorescence (SIF), as well as multiple regression and neural network regression based on environmental and biological factors. T-opt is found to be positively correlated with annual mean temperature (T), except in cold areas with T < 9 degrees C, where T-opt stays within the range of 10 degrees C-15 degrees C. T-opt is equal to T in tropical areas with T >= 25 degrees C, but is obviously higher than T in other regions. epsilon(max) is high in regions with a large amount of diffuse radiation and increases significantly with water stress. The maps of T-opt and epsilon(max) improved the global gross primary production (GPP) estimation (R-2 = 0.83, RMSE = 1.38 g C m(-2) d(-1) against flux observations). The average annual GPP was 126 +/- 1.5 PgC yr(-1), with a trend of 0.6 +/- 0.1 PgC yr(-2) during 2001-2016, faster than most previous estimates. Our study suggests that the positive anthropogenic impacts on GPP were underestimated in existing products, including cropland expansion in southern Brazil and afforestation/forest protection efforts in China and western Europe. This study also provides a potential method for unified GPP modeling under the LUE framework. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46938]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Peking Univ, Coll Urban & Environm Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Yongzhe,Feng, Xiaoming,Fu, Bojie,et al. Improved Global Maps of the Optimum Growth Temperature, Maximum Light Use Efficiency, and Gross Primary Production for Vegetation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2021,126(4):e2020JG005651. |
| APA | Chen, Yongzhe,Feng, Xiaoming,Fu, Bojie,Wu, Xutong,&Gao, Zhen.(2021).Improved Global Maps of the Optimum Growth Temperature, Maximum Light Use Efficiency, and Gross Primary Production for Vegetation.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,126(4),e2020JG005651. |
| MLA | Chen, Yongzhe,et al."Improved Global Maps of the Optimum Growth Temperature, Maximum Light Use Efficiency, and Gross Primary Production for Vegetation".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 126.4(2021):e2020JG005651. |
入库方式： OAI收割
来源：生态环境研究中心
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