Cross-scale spatial variability and associations of carbon pools provide insight into regulating carbon sequestration in tropical montane rainforests
Ding, Zhangqi Ding (Chinese Academy of Sciences. South China Botanical Garden)
Mou, Zhijian (Chinese Academy of Sciences. South China Botanical Garden)
Li, Yanpeng (Chinese Academy of Forestry. Research Institute of Tropical Forestry)
Wang, Jun (Chinese Academy of Sciences. South China Botanical Garden)
Wu, Donghai (Chinese Academy of Sciences. South China Botanical Garden)
Liang, Chao (Chinese Academy of Sciences. Institute of Applied Ecology)
Hui, Dafeng (Tennessee State University. Department of Biological Sciences)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Xu, Han (Chinese Academy of Forestry. Research Institute of Tropical Forestry)
Liu, Zhanfeng (Chinese Academy of Sciences. South China Botanical Garden)

Data:	2024
Resum:	The spatial distribution of plant, soil, and microbial carbon pools, along with their intricate interactions, presents a great challenge for the current carbon cycle research. However, it is not clear what are the characteristics of the spatial variability of these carbon pools, particularly their cross-scale relationships. We investigated the cross-scale spatial variability of microbial necromass carbon (MNC), soil organic carbon (SOC) and plant biomass (PB), as well as their correlation in a tropical montane rainforest using multifractal analysis. The results showed multifractal spatial variations of MNC, SOC, and PB, demonstrating their adherence to power-law scaling. MNC, especially low MNC, exhibited stronger spatial heterogeneity and weaker evenness compared with SOC and PB. The cross-scale correlation between MNC and SOC was stronger than their correlations at the measurement scale. Furthermore, the cross-scale spatial variability of MNC and SOC exhibited stronger and more stable correlations than those with PB. Additionally, this research suggests that when SOC and PB are both low, it is advisable for reforestations to potentiate MNC formation, whereas when both SOC and PB are high some thinning can be advisable to favour MNC formation. Thus, these results support the utilization of management measures such as reforestation or thinning as nature-based solutions to regulate carbon sequestration capacity of tropical forests by affecting the correlations among various carbon pools.
Ajuts:	Agencia Estatal de Investigación TED2021-132627B-I00 Agencia Estatal de Investigación PID2020-115770RB-I Agencia Estatal de Investigación PID2019-110521GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-1333
Nota:	Altres ajuts: the Fundación Ramón Areces Grant CIVP20A6621.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Microbial necromass carbon ; Spatial variability ; Multifractal analysis ; Joint multifractal analysis ; Plant biomass ; Soil organic carbon
Publicat a:	Journal of environmental management, Vol. 353 (February 2024) , art. 120288, ISSN 1095-8630

DOI: 10.1016/j.jenvman.2024.120288

Disponible a partir de: 2026-02-28 Postprint

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