Seasonal variation of ecosystem photosynthetic capacity and its environmental drivers in global grasslands
文献类型：期刊论文
| 作者 | Chen, Xiuzhi; Ren, Xiaoli; He, Honglin; Zhang, Li; Lv, Yan |
| 刊名 | FRONTIERS IN ECOLOGY AND EVOLUTION
 |
| 出版日期 | 2023-05-31 |
| 卷号 | 11页码:1193607 |
| 关键词 | maximum photosynthetic capacity (Amax) grasslands LAI soil moisture vapor pressure deficit |
| DOI | 10.3389/fevo.2023.1193607 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Ecosystem maximum photosynthetic rate (Amax) is an important ecosystem functional property, as it is critical for ecosystem productivity modeling. However, little is known about the mechanisms that regulate the seasonal variation of Amax in grasslands, one of the dominant vegetation types worldwide. In this study, we analyzed the seasonal variability of Amax of grassland sites across the globe and its environmental drivers. We found that grassland Amax had strong seasonal variations, which were influenced by the climate and agricultural management, such as grass cutting and grazing. Second, the seasonal variation of Amax at all arid grasslands [mean annual vapor pressure deficit (VPD) > 10 hPa] was driven more by changes in canopy physiological property (i.e., maximum photosynthetic rate per leaf area Amax(a)) than canopy structural property (i.e., leaf area, presented by LAI), because Amax(a) had stronger temporal variability than LAI in these ecosystems. Third, temperature and VPD were the most influential factors for the seasonal variability of Amax and LAI, but environmental variables only explained a small proportion of the seasonal variation of Amax(a), which was probably because Amax(a) was more related to plant traits. Our findings provide new ideas for better parameterizations of Amax in terrestrial ecosystem models. |
| 学科主题 | Environmental Sciences & Ecology |
| WOS关键词 | GROSS PRIMARY PRODUCTION ; INTERANNUAL VARIABILITY ; SEMIARID ECOSYSTEMS ; CARBON-DIOXIDE ; EXCHANGE ; RESPONSES ; WATER ; CO2 ; DEPENDENCE ; PATTERNS |
| WOS研究方向 | Environmental Sciences & Ecology |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193776]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.University of Chinese Academy of Sciences, CAS 2.Institute of Geographic Sciences & Natural Resources Research, CAS 3.Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | Chen, Xiuzhi,Ren, Xiaoli,He, Honglin,et al. Seasonal variation of ecosystem photosynthetic capacity and its environmental drivers in global grasslands[J]. FRONTIERS IN ECOLOGY AND EVOLUTION,2023,11:1193607. |
| APA | Chen, Xiuzhi,Ren, Xiaoli,He, Honglin,Zhang, Li,&Lv, Yan.(2023).Seasonal variation of ecosystem photosynthetic capacity and its environmental drivers in global grasslands.FRONTIERS IN ECOLOGY AND EVOLUTION,11,1193607. |
| MLA | Chen, Xiuzhi,et al."Seasonal variation of ecosystem photosynthetic capacity and its environmental drivers in global grasslands".FRONTIERS IN ECOLOGY AND EVOLUTION 11(2023):1193607. |
入库方式： OAI收割
来源：地理科学与资源研究所
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