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	New estimates of carbon storage and sequestration in China's forests: Effects of age-class and method on inventory-based carbon estimation
	Pan Y. D. ; Luo T. X. ; Birdsey R. ; Hom J. ; Melillo J.
	2004
关键词	net primary production us forests biomass estimation tropical forests woody biomass patterns budget
英文摘要	We developed a volume-to-biomass method based on age groups representative of forest development stages to estimate live tree biomass, C, and biomass and C accumulation rates of China's forests between 1973 and 1993. The data were from plot-level forest inventory, national-level inventory statistics, and ecological site studies specified to estimate biomass in different tree components. Our results indicate that carbon storage in China's forests was 4.34 Pg C in the early 1990s, an increase of 13% since the early 1970s. The annual forest C sequestration rate front the late 1980s to early 1990s was 0.068 Pg C/yr and approximately four- to five-times higher than in the 1970s and 1980s. The large C sink in China's forests in the early 1990s was likely related to age structure changes that had developed to more productive stages, a consequence of reforestation and afforestation programs front the 1960s. The results were compared with other C store estimates, which were based on the same inventory data. Various methods can produce estimates that differ in the direction of C flux as well as its magnitude. Separating age groups with the volume-biomass method could cause a 27% difference in estimated carbon pools but an 89% difference in C sequestration rates whereas the biomass density method would provide an estimate that differs by 65% in the C pools.
出处	Climatic Change
卷	67
期	2-3
页	211-236
收录类别	SCI
语种	英语
ISSN号	0165-0009
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/23238]
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	Pan Y. D.,Luo T. X.,Birdsey R.,et al. New estimates of carbon storage and sequestration in China's forests: Effects of age-class and method on inventory-based carbon estimation. 2004.

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