期刊
ANNALS OF FOREST SCIENCE
卷 75, 期 3, 页码 -出版社
SPRINGER FRANCE
DOI: 10.1007/s13595-018-0745-3
关键词
Biodiversity; Disturbance; Diversity effect; Functional composition; Mass ratio effect; Niche complementarity effect; Stand structure
类别
资金
- National Key Research and Development Program of China [2016YFC0500300]
- National Natural Science Foundation of China [41671050 31722010, 31730015]
- Key Research Program of Frontier Sciences of the Chinese Academy of Sciences [QYZDB-SSW-DQC002]
- Youth Innovation Promotion Association CAS [2017241]
- CFERN Award Fund on excellent academic achievement
- BEIJING TECHNO SOLUTIONS Award Fund on excellent academic achievement
- Guangdong Provincial Government [205588]
- Talento Fellowship [2016-T2/AMB-1665]
- TULIP Laboratory of Excellence [ANR-10-LABX-41]
Key message Functional trait composition and stand structural complexity rather than biodiversity substantially enhance aboveground carbon storage in temperate mixed forests, while accounting for the effects of disturbance intensity. This study provides a strong support to the mass ratio effect in addition to the niche differentiation and facilitation effects. & Context The underlying mechanisms for the relationships between biodiversity and ecosystem function remain hotly debated for the last four decades. Aims We tested how do biodiversity, functional trait composition, stand structural attributes, and topographic variables explain aboveground C storage under different disturbance regimes. Methods We used linear mixed effects and structural equation models to simultaneously evaluate the effects of biodiversity, stand structure attributes, functional trait composition, and topographic variables on aboveground C storage while considering for the effects of disturbance intensity. We used biophysical data from 260 plots within 11 permanent temperate mixed forests in Northeastern China. Results Aboveground C storage was driven by stand basal area, individual tree size inequality, community-weighted mean of maximum height and wood density, and diversity (functional evenness and mean nearest taxon distance). The structural equation model showed that aboveground C storage was positively affected by individual tree size inequality and trait composition (i.e., CWM of maximum height), after accounting for the strongest negative direct and indirect effects of disturbance intensity. Conclusion Conserving functional identity of species and maintaining complex stand structure would be the alternative choices for higher aboveground C storage in temperate mixed forests.
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