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| DOI | 10.1080/17538947.2023.2300311 |
| Long-term dynamics of peak photosynthesis timing and environmental controls in the Tibetan Plateau monitored by satellite solar-induced chlorophyll fluorescence | |
| 发表日期 | 2024 |
| ISSN | 1753-8947 |
| EISSN | 1753-8955 |
| 起始页码 | 17 |
| 结束页码 | 1 |
| 卷号 | 17期号:1 |
| 英文摘要 | Vegetation phenological metrics have attracted increasing attentions during recent years. However, compared with the peak greenness timing (PGT), the peak photosynthesis timing (PPT) has been overlooked until now. As the world's third pole, the Tibetan Plateau is one of the most sensitive areas to global climatic change. In this study, long-term time-series solar-induced chlorophyll fluorescence (SIF) data were used to identify the PPT patterns, trends, and responses in the Tibetan Plateau over the past two decades. Our findings indicated that the SIF-derived PPT can better capture the characteristics from flux-measured gross primary productivity compared with the MODIS EVI-based PGT, exhibiting great potential to characterize large-scale vegetation PPT dynamics. The multi-year mean PPT mainly appeared in late July and early August with a gradually delayed trend from southeast to northwest. Meanwhile, early PPT occurred in many areas of the Tibetan Plateau (67.36%), with the overall trend advanced by about 0.89 day decade-1. Interestingly, opposite trends of PPT were found with elevation below and above 2500 m asl. Preseason temperature, shortwave radiation, and precipitation jointly explained the strong spatial heterogeneity of PPT trend. All analyses help clarify the role of the 'third pole' in responding to environmental change and regional carbon cycles. |
| 英文关键词 | Vegetation phenology; peak photosynthesis timing; global change; eddy covariance; Tibetan Plateau |
| 语种 | 英语 |
| WOS研究方向 | Physical Geography ; Remote Sensing |
| WOS类目 | Geography, Physical ; Remote Sensing |
| WOS记录号 | WOS:001138071300001 |
| 来源期刊 | INTERNATIONAL JOURNAL OF DIGITAL EARTH
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/297468 |
| 作者单位 | East China Normal University; Chinese Academy of Sciences; Aerospace Information Research Institute, CAS; Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS; Southwest University - China; Hangzhou Normal University; Chinese Academy of Sciences; Aerospace Information Research Institute, CAS |
| 推荐引用方式 GB/T 7714 | . Long-term dynamics of peak photosynthesis timing and environmental controls in the Tibetan Plateau monitored by satellite solar-induced chlorophyll fluorescence[J],2024,17(1). |
| APA | (2024).Long-term dynamics of peak photosynthesis timing and environmental controls in the Tibetan Plateau monitored by satellite solar-induced chlorophyll fluorescence.INTERNATIONAL JOURNAL OF DIGITAL EARTH,17(1). |
| MLA | "Long-term dynamics of peak photosynthesis timing and environmental controls in the Tibetan Plateau monitored by satellite solar-induced chlorophyll fluorescence".INTERNATIONAL JOURNAL OF DIGITAL EARTH 17.1(2024). |
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