Response mechanism of ecosystem gross primary productivity to cloud and aerosol changes in a Chinese winter-wheat cropland
文献类型：期刊论文
| 作者 | Bao, Xueyan3; Sun, Xiaomin2; Bao, Guirong1 |
| 刊名 | INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
 |
| 出版日期 | 2024-07-30 |
| 卷号 | N/A页码:11 |
| 关键词 | Clouds and aerosols Solar radiance Diffuse light Photosynthesis Agroecosystem |
| ISSN号 | 0020-7128 |
| DOI | 10.1007/s00484-024-02734-1 |
| 英文摘要 | Changes in clouds and aerosols may alter the quantity of solar radiance and its diffuse components, as well as air temperature (T-a) and vapor pressure deficit (VPD), thereby affecting canopy photosynthesis. Our aim was to determine how ecosystem gross primary productivity (GPP) responds to the cloudiness and aerosol depth changes, as indicated by diffuse light fraction (fDIF). The environmental factors that caused these responses were examined using 2 years of eddy covariance data from a winter-wheat cropland in northern China. The GPP decreased significantly along with the fDIF in a nonlinear pattern, with a determination coefficient of 0.91. Changes in fDIF altered total photosynthetic active radiation (PAR), diffuse PAR, T-a and VPD. The variations in GPP with fDIF in both fDIF change Phase I (fDIF < 0.65) and Phase II (fDIF > 0.65) resulted from the combined effects of multiple environmental factors. Because the driving factors were closely correlated, a path analysis was used to distinguish their respective contribution to the GPP response to fDIF by integrating path coefficients. In Phases I and II, the decreased responses of GPP to fDIF were mainly caused by total PAR and diffuse PAR, respectively, which contributed approximately 49% and 37% to GPP variations, respectively. Our research has certain implications for the necessity to consider fDIF and to incorporate diffuse light into photosynthetic models. |
| WOS关键词 | CARBON-DIOXIDE EXCHANGE ; ENERGY-BALANCE CLOSURE ; LIGHT-USE EFFICIENCY ; DIFFUSE-RADIATION ; FOREST ECOSYSTEMS ; IMPACT ; TEMPERATURE ; FRACTION ; PHOTOSYNTHESIS ; RESPIRATION |
| 资助项目 | Inner Mongolia Natural Science Foundation[2024QN03032] |
| WOS研究方向 | Biophysics ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Physiology |
| 语种 | 英语 |
| WOS记录号 | WOS:001280805500001 |
| 出版者 | SPRINGER |
| 资助机构 | Inner Mongolia Natural Science Foundation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/207316]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Bao, Xueyan |
| 作者单位 | 1.Inner Mongolia Minzu Univ, Grassland Sch, Tongliao 028000, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Inner Mongolia Minzu Univ, Agr Sch, Tongliao 028000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Xueyan,Sun, Xiaomin,Bao, Guirong. Response mechanism of ecosystem gross primary productivity to cloud and aerosol changes in a Chinese winter-wheat cropland[J]. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,2024,N/A:11. |
| APA | Bao, Xueyan,Sun, Xiaomin,&Bao, Guirong.(2024).Response mechanism of ecosystem gross primary productivity to cloud and aerosol changes in a Chinese winter-wheat cropland.INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,N/A,11. |
| MLA | Bao, Xueyan,et al."Response mechanism of ecosystem gross primary productivity to cloud and aerosol changes in a Chinese winter-wheat cropland".INTERNATIONAL JOURNAL OF BIOMETEOROLOGY N/A(2024):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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