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Variations and determinants of tissue carbon concentration of 32 sympatric temperate tree species

Journal of Forestry Research 2024年第6期35卷 62-72页

作者： Jun Pan Jing Zhang Xingchang Wang Xiuwei Wang Qi Wang Yankun Liu Yulong Liu Yunfei Diao Xiankui Quan Chuankuan Wang Xiaochun Wang Center for Ecological Research Northeast Forestry UniversityHarbin 150040People’s Republic of China Key Laboratory of Sustainable Forest Ecosystem Management Ministry of EducationNortheast Forestry UniversityHarbin 150040People’s Republic of China Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical GardenChinese Academy of SciencesGuangzhou 510650People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and ManagementInstitute of Eco-Environmental and Soil SciencesGuangdong Academy of ScienceGuangzhou 510650People’s Republic of China Heilongjiang Institute of Ecology Heilongjiang Academy of ForestryHarbin 150040People’s Republic of China

Plant carbon(C)concentration is a fundamental trait for estimating C storage and nutrient ***,the mechanisms of C concentration variations among different tree tissues and across species remains poorly *** this study,we explored the variations and determinants of C concentration of nine tissues from 216 individuals of 32 tree species,with particular attention on the effect of wood porosity(i.e.,non-porous wood,diffuse-porous wood,and ring-porous wood).The inter-tissue pattern of C concentration diverged across the three porosity types;metabolically active tissues(foliage and fine roots,except for the foliage of ring-porous species)generally had higher C levels compared with inactive *** poor inter-correlations between tissue C concentrations indicated a necessity of measuring tissue-and specific-C *** concentration for almost all tissues generally decreased from non-porous,to diffuse-porous and to *** C was often positively correlated with tissue(foliage and wood)density and tree size,while negatively correlated with growth rate,depending on wood *** results highlight the mediating effect of type of wood porosity on the variation in tissue C among temperate *** variations among tissues were more important than that among *** findings provided insights on tissue C concentration variability of temperate forest species.

关键词： Carbon fraction Growth rate Temperate tree species tissue density Wood porosity

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