Effects of diffuse light on the gross ecosystem primary productivity of a winter wheat (Triticum aestivum L.) cropland in northern China
文献类型：期刊论文
| 作者 | Bao, Xueyan2; Sun, Xiaomin1 |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2024-06-22 |
| 卷号 | 14期号:1页码:11 |
| 关键词 | Diffuse light Ecosystem photosynthesis Agroecosystem Canopy light interception Modeling |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-024-65279-8 |
| 英文摘要 | Diffuse light is produced by clouds and aerosols in the atmosphere. Exploring the effects of diffuse light on ecosystem productivity is important for understanding the terrestrial carbon (CO2) cycle. Here, 2 years of gross ecosystem primary productivity (GEP) from a (winter) wheat cropland in China was assessed using eddy covariance technology to explore the effects of diffuse photosynthetic active radiance (PAR) on wheat GEP. Wheat GEP increased significantly and positively along with diffuse PAR. In addition, wheat GEP was significantly affected by total PAR, air temperature, and vapor press deficit in different diffuse PAR fraction (fDIF) change stages. Because significant autocorrelations existed among the controlling factors, a path analysis was used to quantify the effects of diffuse light on GEP. Diffuse PAR was the primary and secondary importance factors affecting GEP with direct path coefficients of 0.54 and 0.48, respectively, in different fDIF change stages. A multilayer canopy model revealed that the middle and lower canopy levels intercepted more light when diffuse PAR increased. This resulted in the photosynthetic enhancement of middle and lower canopy levels, which contributed approximately 65% and 35%, respectively, to the increase in photosynthesis for the entire canopy (similar to 30.5%). Overall, our study provided new evidence regarding the importance of diffuse light for CO2 uptake in agroecosystems, which is important for predicting the responses of ecosystem CO2 budgets to future climate-related light changes. |
| WOS关键词 | USE EFFICIENCY ; RADIATION ; EXCHANGE ; TEMPERATURE ; IMPACT ; FOREST ; CO2 ; RESPONSES ; FRACTION ; MODELS |
| 资助项目 | Inner Mongolia Natural Science Foundation[2024QN03032] ; Doctor Start up Fund of Inner Mongolia Minzu University[BS495] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001253714500034 |
| 出版者 | NATURE PORTFOLIO |
| 资助机构 | Inner Mongolia Natural Science Foundation ; Doctor Start up Fund of Inner Mongolia Minzu University |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/206207]  |
| 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.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Inner Mongolia Minzu Univ, Agr Sch, Tongliao 028000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Xueyan,Sun, Xiaomin. Effects of diffuse light on the gross ecosystem primary productivity of a winter wheat (Triticum aestivum L.) cropland in northern China[J]. SCIENTIFIC REPORTS,2024,14(1):11. |
| APA | Bao, Xueyan,&Sun, Xiaomin.(2024).Effects of diffuse light on the gross ecosystem primary productivity of a winter wheat (Triticum aestivum L.) cropland in northern China.SCIENTIFIC REPORTS,14(1),11. |
| MLA | Bao, Xueyan,et al."Effects of diffuse light on the gross ecosystem primary productivity of a winter wheat (Triticum aestivum L.) cropland in northern China".SCIENTIFIC REPORTS 14.1(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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