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	Aboveground biomass and corresponding carbon sequestration ability of four major forest types in south China
	Chen Q. Q. ; Xu W. Q. ; Li S. G. ; Fu S. L. ; Yan J. H.
	2013
关键词	broad-leaved forest needle-leaved forest aboveground biomass carbon accumulation rate logistic regression age-related decline net primary production old-growth forests storage chronosequence respiration ecosystems climate pattern world
英文摘要	We estimated aboveground biomass carbon (T-ABC) and net carbon accumulation rates (T-NEP) for trees in four major forest types based on national forest inventory data collected in 1994-1998 and 1999-2003. The four types were Pinus massoniana forest, Cunninghamia lanceolata forest, hard broad-leaved evergreen forest and soft broad-leaved evergreen forest. We analyzed variations in T-ABC and T-NEP for five stand ages (initiation, young, medium, mature and old). In both time periods, estimated T-ABC in all four forest types increased consistently with forest stand age and the oldest stage had the largest T-ABC compared with other stages. Broad-leaved forests (hard and soft) had higher T-ABC than needle-leaved forests (Pinus massoniana and Cunninghamia lanceolata) for each of the five age stages. The difference of T-ABC between broad-leaved and needle-leaved forests increased with forest stand age. Comparison of estimated T-NEP by age category indicated T-NEP increased from the initiation stage to the young stage, and then decreased from the mature stage to old stage in all four forest types. T-NEP for any particular stage depended on the forest type; for instance, broad-leaved forests at both the mature and old stages had greater T-NEP than in needle-leaved forests. A logistic curve was applied to fit the relationship between T-ABC and forest stand age. In each period, correlations in all four forest types were all statistically significant (P < 0.01) with R-2 > 0.95. T-ABC was therefore predicted by these regression functions from 2000 to 2050 and the mean TNEP during the predicted period was estimated to be about 41.14, 31.53, 75.50 and 75.68 g C m(-2) a(-1) in Pinus massoniana forest, Cunninghamia lanceolata forest, hard broad-leaved forest and soft broad-leaved forest, respectively. Results from both forest inventory and regression prediction suggest broad-leaved forests are greater carbon sinks, and hence have greater carbon sequestration ability especially in the mature and old stages when compared to needle-leaved forests. Broad-leaved forests should have high levels of carbon sequestration when compared with needle-leaved forests in south China.
出处	Chinese Science Bulletin
卷	58
期	13
页	1551-1557
收录类别	SCI
语种	英语
ISSN号	1001-6538
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30624]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Chen Q. Q.,Xu W. Q.,Li S. G.,et al. Aboveground biomass and corresponding carbon sequestration ability of four major forest types in south China. 2013.

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