Title: Analysis of the carbon stock structure in forest plantations with different regeneration methods
Abstract: Forest regeneration can maintain and facilitate forest resources,and is the process for adjusting forest structure,fulfilling sustainable forest management,and creating efficient multi-functional forest ecosystems.In this study,we compared carbon stock structure aiming four typical forest communities including Masson pine plantations,Chinese fir plantations,natural mixed broad-leaved secondary forest,artificial mixed needle-broad leaved secondary forest in Lingnan forestry farm in southern Anhui province,China.The results showed that:(1) the maximum stem biomass density was found in the artificial needle-broad leaved mixed secondary forest(67.32±56.57) mg.hm-2,and the minimum was in Chinese fir plantations(43.79±9.13) mg.hm-2.The largest proportion of stem biomass occurred in Masson pine plantations(64.04±1.49)%,but the mixed broad-leaved secondary had the highest carbon storage(126.47±90.75) mg C.hm-2;(2) Among the four forest plantations,the natural mixed broad-leaved secondary forest and Masson pine plantation had the highest carbon density 95.67 and 98.21 mg.hm-2,respectively,while the Chinese fir plantation has the lowest C density 55.41 mg.hm-2.The shrub layer had the highest biomass carbon density(17.438± 24.627) mg hm2 in the mixed broad-leaved secondary forest,but the herb layer and litter layer stored the most carbon(1.326 ± 0.431) and(5.517±2.846) mg.hm-2,respectively in the Masson pine plantation;(3) the underground carbon storage in the mixed broad-leaved forest was the highest(10.5±9.8) mg hm-2,and followed by the mixed needle-broad leaved secondary forest,the Chinese fir plantations,and the Masson pine plantations.The aboveground carbon storage was in the order from the large to smallest for the mixed broad-leaved forest,the mixed needle-broad leaved secondary forest,the Masson pine plantation,and the Chinese fir plantation.The biggest ratio of root to stem was found in the Chinese fir plantations 0.21±0.01 among the four forest plantations,while the ratio of root to stem shrub layer was the biggest 1.61±0.11 within the Chinese fir plantation;(4) There was a positive correlation between stem density and carbon proportion of the tree layer or that of the herb layer in the mixed broad-leaved forest,while a negative correlation was found between the carbon proportion of the tree layer and the average diameter at breast height(DBH) or the stems density.Except for the Chinese fir plantation,carbon density in the shrub layer was negatively correlated with DBH or the stems density factors.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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Cited By Count: 1
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