The detection and attribution of extreme reductions in vegetation growth across the global land surface
Yang, Hui (Max Planck Institute for Biogeochemistry)
Munson, Seth (Southwest Biological Science Center)
Huntingford, Chris (Centre for Ecology and Hydrology)
Carvalhais, Nuno (Universidade Nova de Lisboa . Departamento de Ciências e Engenharia do Ambiente)
Knapp, Alan K. (Colorado State University. Department of Biology)
Li, Xiangyi (Peking University)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Zscheischler, Jakob (Helmholtz Centre for Environmental Research)
Chen, Anping (Colorado State University. Department of Biology)

Fecha:	2023
Resumen:	Negative extreme anomalies in vegetation growth (NEGs) usually indicate severely impaired ecosystem services. These NEGs can result from diverse natural and anthropogenic causes, especially climate extremes (CEs). However, the relationship between NEGs and many types of CEs remains largely unknown at regional and global scales. Here, with satellite-derived vegetation index data and supporting tree-ring chronologies, we identify periods of NEGs from 1981 to 2015 across the global land surface. We find 70% of these NEGs are attributable to five types of CEs and their combinations, with compound CEs generally more detrimental than individual ones. More importantly, we find that dominant CEs for NEGs vary by biome and region. Specifically, cold and/or wet extremes dominate NEGs in temperate mountains and high latitudes, whereas soil drought and related compound extremes are primarily responsible for NEGs in wet tropical, arid and semi-arid regions. Key characteristics (e. g. , the frequency, intensity and duration of CEs, and the vulnerability of vegetation) that determine the dominance of CEs are also region- and biome-dependent. For example, in the wet tropics, dominant individual CEs have both higher intensity and longer duration than non-dominant ones. However, in the dry tropics and some temperate regions, a longer CE duration is more important than higher intensity. Our work provides the first global accounting of the attribution of NEGs to diverse climatic extremes. Our analysis has important implications for developing climate-specific disaster prevention and mitigation plans among different regions of the globe in a changing climate.
Ayudas:	Agencia Estatal de Investigación TED2021-132627B-I00
Derechos:	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.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Climate extremes ; Coincidence analysis ; Drought ; Flood ; Frost ; Heatwave ; Vegetation growth anomaly
Publicado en:	Global change biology, Vol. 29, Issue 8 (April 2023) , p. 2351-2362, ISSN 1365-2486

DOI: 10.1111/gcb.16595

12 p, 6.8 MB

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Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
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