Species richness is a strong driver of forest biomass along broad bioclimatic gradients in the Himalayas
Dyola, Nita (University of Chinese Academy of Science)
Sigdel, Shalik Ram (Chinese Academy of Sciences)
Liang, Eryuan (Chinese Academy of Sciences)
Babst, Flurin (University of Arizona)
Camarero, Jesús Julio (Instituto Pirenaico de Ecología)
Aryal, Sugam (Friedrich-Alexander-Universität Erlangen-Nürnberg)
Chettri, Nakul (International Centre for Integrated Mountain Development)
Gao, Shan (Chinese Academy of Sciences)
Lu, Xiaoming (Chinese Academy of Sciences)
Sun, Jian (Chinese Academy of Sciences)
Wang, Tao (Chinese Academy of Sciences)
Zhang, Gengxin (Chinese Academy of Sciences)
Zhu, Haifeng (Chinese Academy of Sciences)
Piao, Shilong (Chinese Academy of Sciences)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)

Data:	2022
Resum:	Forest biomass is an important component of terrestrial carbon pools. However, how climate, biodiversity, and structural attributes co-determine spatiotemporal variation in forest biomass remains not well known. We aimed to shed light on these drivers of forest biomass by measuring diversity and structural attributes of tree species in 400-m2 plots located every 100 m along a 4200-m elevational gradient in the eastern Himalayas. We applied structural equation models to test how climate, species richness, structural attributes, and their interactions influence forest biomass. Importantly, species richness was a stronger driver of biomass than environmental and structural attributes such as annual air temperature or stem density. Integrating the availability of energy and the demand for water, potential evapotranspiration was more strongly correlated with biomass than water availability, likely due to the strong influence of the Indian summer monsoon. Thus, interactions between climate and tree community composition ultimately control how much carbon is stored in woody biomass across bioclimatic gradients. This fundamental understanding will support predictive efforts of the forest carbon sink in this hydroclimatically important region and help preserving regional forests as a potent natural solution for climate change mitigation.
Ajuts:	Agencia Estatal de Investigación PID2019-110521GB-I00
Nota:	Altres ajuts: the Fundación Ramón Areces project Elemental-Climate
Drets:	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.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Alpine treeline ; Climate ; Diversity ; Elevation ; Potential evapotranspiration ; Tropical forest
Publicat a:	Ecosphere, Vol. 13, Issue 6 (June 2022) , art. e4107, ISSN 2150-8925

DOI: 10.1002/ecs2.4107

14 p, 1.5 MB

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