Autumn canopy senescence has slowed down with global warming since the 1980s in the Northern Hemisphere
Zhang, Yichen (Sino-French Institute for Earth System Science)
Hong, Songbai (Sino-French Institute for Earth System Science)
Liu, Qiang (University of Antwerp. Department of Biology)
Huntingford, Chris (UK Centre for Ecology and Hydrology)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Rossi, Sergio (Université du Québec à Chicoutimi. Département des Sciences Fondamentales)
Myneni, Ranga B. (Boston University. Department of Earth and Environment)
Piao, Shilong (Chinese Academy of Sciences. Institute of Tibetan Plateau Research)

Date:	2023
Abstract:	Climate change strongly impact vegetation phenology, with considerable potential to alter land-atmosphere carbon dioxide exchange and terrestrial carbon cycle. In contrast to well-studied spring leaf-out, the timing and magnitude of autumn senescence remains poorly understood. Here, we use monthly decreases in Normalized Difference Vegetation Index satellite retrievals and their trends to surrogate the speed of autumn senescence during 1982-2018 in the Northern Hemisphere (>30°N). We find that climate warming accelerated senescence in July, but this influence usually reversed in later summer and early autumn. Interestingly, summer greening causes canopy senescence to appear later compared to an advancing trend after eliminating the greening effect. This finding suggests that summer canopy greening may counteract the intrinsic changes in autumnal leaf senescence. Our analysis of autumn vegetation behavior provides reliable guidance for developing and parameterizing land surface models that contain an interactive dynamic vegetation module for placement in coupled Earth System Models.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Climate change ; Climate-change ecology ; Ecosystem ecology ; Phenology
Published in:	Communications earth & environment, Vol. 4 (2023) , art. 173, ISSN 2662-4435

DOI: 10.1038/s43247-023-00835-0

9 p, 3.4 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Articles > Research articles
Articles > Published articles