Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2015821118 |
Widespread decline in winds delayed autumn foliar senescence over high latitudes | |
Chaoyang Wu; Jian Wang; Philippe Ciais; Josep Peñuelas; Xiaoyang Zhang; Oliver Sonnentag; Feng Tian; Xiaoyue Wang; Huanjiong Wang; Ronggao Liu; Yongshuo H. Fu; Quansheng Ge | |
2021-04-20 | |
发表期刊 | Proceedings of the National Academy of Sciences |
出版年 | 2021 |
英文摘要 | The high northern latitudes (>50°) experienced a pronounced surface stilling (i.e., decline in winds) with climate change. As a drying factor, the influences of changes in winds on the date of autumn foliar senescence (DFS) remain largely unknown and are potentially important as a mechanism explaining the interannual variability of autumn phenology. Using 183,448 phenological observations at 2,405 sites, long-term site-scale water vapor and carbon dioxide flux measurements, and 34 y of satellite greenness data, here we show that the decline in winds is significantly associated with extended DFS and could have a relative importance comparable with temperature and precipitation effects in contributing to the DFS trends. We further demonstrate that decline in winds reduces evapotranspiration, which results in less soil water losses and consequently more favorable growth conditions in late autumn. In addition, declining winds also lead to less leaf abscission damage which could delay leaf senescence and to a decreased cooling effect and therefore less frost damage. Our results are potentially useful for carbon flux modeling because an improved algorithm based on these findings projected overall widespread earlier DFS than currently expected by the end of this century, contributing potentially to a positive feedback to climate. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/322847 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Chaoyang Wu,Jian Wang,Philippe Ciais,et al. Widespread decline in winds delayed autumn foliar senescence over high latitudes[J]. Proceedings of the National Academy of Sciences,2021. |
APA | Chaoyang Wu.,Jian Wang.,Philippe Ciais.,Josep Peñuelas.,Xiaoyang Zhang.,...&Quansheng Ge.(2021).Widespread decline in winds delayed autumn foliar senescence over high latitudes.Proceedings of the National Academy of Sciences. |
MLA | Chaoyang Wu,et al."Widespread decline in winds delayed autumn foliar senescence over high latitudes".Proceedings of the National Academy of Sciences (2021). |
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