论文--中国科学院地理科学与资源研究所

论文

论文题目：	Increased drought effects on the phenology of autumn leaf senescence
第一作者：	Wu Chaoyang, Peng Jie, Ciais Philippe, Penuelas Josep etc.
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发表年度：	2022
摘　　要：	Global warming delays the autumn date of foliar senescence (DFS) in recent decades, with positive implications for growing season length and therefore global carbon storage. However, warming-associated drought, leading to water limitation, may conversely stimulate earlier DFS. Using ground observations since 1940s and 34 years of satellite greenness data (1982-2015) over the Northern Hemisphere (>30 degrees N), we show the increased impact of drought on DFS. Earlier DFS is linked to decreased precipitation under warming and weaker drought resistance associated with various plant functional traits. For example, isohydric plants with strict regulation of water status may drop leaves fast during droughts. We derive an improved set of phenology models based on this influence and project earlier DFS by the end of the century, particularly at high latitudes (>50 degrees N). Our results limit uncertainties in the later end of plant growth with warming, aiding estimation of carbon uptake of terrestrial ecosystems.
英文摘要：
刊物名称：	NATURE CLIMATE CHANGE
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论文类别：	SCI