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| DOI | 10.1111/gcb.17134 |
| Slower changes in vegetation phenology than precipitation seasonality in the dry tropics | |
| 发表日期 | 2024 |
| ISSN | 1354-1013 |
| EISSN | 1365-2486 |
| 起始页码 | 30 |
| 结束页码 | 1 |
| 卷号 | 30期号:1 |
| 英文摘要 | The dry tropics occupy similar to 40% of the tropical land surface and play a dominant role in the trend and interannual variability of the global carbon cycle. Previous studies have reported considerable changes in the dry tropical precipitation seasonality due to climate change, however, the accompanied changes in the length of the vegetation growing season (LGS)-the key period of carbon sequestration-have not been examined. Here, we used long-term satellite observations along with in-situ flux measurements to investigate phenological changes in the dry tropics over the past 40 years. We found that only similar to 18% of the dry tropics show a significant (p <= .1) increasing trend in LGS, while similar to 13% show a significant decreasing trend. The direction of the LGS change depended not only on the direction of precipitation seasonality change but also on the vegetation water use strategy (i.e. isohydricity) as an adaptation to the long-term average precipitation seasonality (i.e. whether the most of LGS is in the wet season or dry season). Meanwhile, we found that the rate of LGS change was on average similar to 23% slower than that of precipitation seasonality, caused by a buffering effect from soil moisture. This study uncovers potential mechanisms driving phenological changes in the dry tropics, offering guidance for regional vegetation and carbon cycle studies. |
| 英文关键词 | dry tropics; hydroclimate; isohydricity; precipitation seasonality; vegetation phenology |
| 语种 | 英语 |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
| WOS记录号 | WOS:001143140400001 |
| 来源期刊 | GLOBAL CHANGE BIOLOGY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/297718 |
| 作者单位 | National University of Singapore; National University of Singapore; Peking University; University of Arizona; University of Hong Kong |
| 推荐引用方式 GB/T 7714 | . Slower changes in vegetation phenology than precipitation seasonality in the dry tropics[J],2024,30(1). |
| APA | (2024).Slower changes in vegetation phenology than precipitation seasonality in the dry tropics.GLOBAL CHANGE BIOLOGY,30(1). |
| MLA | "Slower changes in vegetation phenology than precipitation seasonality in the dry tropics".GLOBAL CHANGE BIOLOGY 30.1(2024). |
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