典型喀斯特山区林地乔木层碳储量动态研究--以重庆市酉阳土家族苗族自治县为例

在2012年重庆市森林资源二类调查实测数据和2002年调查资料的基础上，利用西南地区乔木层生物量和蓄积量回归模型，估算了酉阳林地近10年的碳储量动态，并按优势树种、林种、龄组、起源分类计算了各类乔木层的碳储量。结果表明，10年来酉阳林地总碳量呈显著增加趋势，其中杉木的碳储量增量最大，各龄组中中龄林碳储量增加最多。可见，酉阳林地植被是CO2的汇，且随着幼龄林的增长和人工林的发展，碳汇功能将不断上升。

Carbon storage dynamics of forest vegetation in karst mountain--A case study in Youyang Tujia and Miao Autonomous County

Based on the data in 2002 and 2012 of forest inventory in Chongqing, using a regression model between stand biomass and volume which was appropriate for the southwest district, this paper estimated forest vegetation carbon storage dynamics in recent 10 years in Youyang county. And then carbon dynamics of different sorts of vegetation was calculated. The results indicated that, in the recent 10 years, total of forest carbon increased strikingly, and among whole species, China fir''s increment was the maximum, among all ages, middle-age forests had the largest increase. Then it can be concluded that, the forest in Youyang is a carbon sink, and with the growing of young forests and development of plantation, the function of carbon sink will rise.