以山西省1995年、2000年和2005年的3期森林资源清查数据为基础,采用生物量换算因子法,研究了山西省森林植被碳储量及其动态变化。结果表明:10年间山西森林的碳储量总体呈上升的趋势。全省森林的总碳储量由1995年的3?514.22万Mg增加到2005年的4?505.61万Mg。在14个(类)森林优势树种中,栎类、油松和杨树这三者的碳储量占主导地位,合计占山西省森林总碳储量的60%以上。在全部森林中,幼、中龄林及近熟林的碳储量合计约占总量的90%。2005年,人工林碳储量占森林总碳储量的百分比提高了5.28%,全省森林平均碳密度为23.893?3～26.371?7Mg/hm²。

Based on the forest inventory data of 1995,2000 and 2005 in Shanxi province,China,the biomass forest carbon storage and its change pattern during this period were investigated by using the variable BEF (Biomass Expansion Factor) method.The result showed that the forest biomass carbon storage within these years increased steadily.The total forest biomass carbon storage increased from 35.1422×10⁶Mg in 1995 to 45.0561×10⁶Mg in 2005.Deciduous oaks,Pinus tabulaefomis and Populus spp.were the main dominant tree species,and they made more than 90% of the contribution to the total carbon storage.The carbon storage of young,middle-aged and premature forests accounted approximately for 90% of the total carbon storage of all forests.The percentage of carbon storage of man-made forests increased 5.28% in 2005.The average carbon density of the forests in Shanxi was 23.8933～26.3717MgC ha^-1.