山西省森林植被生物量和碳储量估算研究

为了掌握山西省森林资源生物量和森林生态系统碳储量,分析其动态变化趋势,以山西省1990—2010年的5期森林资源连续清查数据为基础,采用基于生物量与蓄积量之间统计关系的生物量换算因子连续函数法,结合碳储量换算系数法,对山西省1990年以来森林生物量和碳储量进行了测算,分析了20年来的变化趋势和存在的问题。结果表明,1990—2010年,山西省的森林总生物量从7104.85×104t增加到12441.15×104t,森林总生物量年均增加266.82×104t,年均增长率3.76%;平均单位面积森林生物量从31.7400t/hm2增加到47.6307t/hm2,单位面积森林生物量年均增长0.5297t/hm2;山西省森林资源碳储量从3544.61×104t增加到6206.89×104t,森林碳密度从15.8348t/hm2增加到23.7630t/hm2,虽然山西省森林资源碳储量和森林碳密度都在不断增加,森林单位面积生物量和碳储量均远低于全国平均水平,森林平均碳密度远低于全国森林平均碳密度（44.91t/hm2）,更低于世界的平均水平（86.00t/hm2）,山西省整体的林分质量仍然较低、生长较差,急需加强对现有林经营管理,充分发挥土地生产潜力。

Study on Estimation of Forest Biomass and Carbon Storage of Shanxi Province

In order to acquire the forest biomass and carbon storage of Shanxi Province and analyze its dynamic change trend,based on the data from the continuous forest inventories（CFI） in 1994,1999,2000,2005 and 2010,combined with the carbon conversion coefficient method,it was estimated with the variable biomass expansion factor function（variable BEFF） method that was derived from the relationship between biomass and volume.The results showed that the total forest biomass of Shanxi Province increased 12441.15×10 4 t from 7104.85×10 4 t,respectively.The average total forest biomass increased 266.82×10 4 t,and its average annual growth was 3.76%.The average unit area biomass of forest increased from 31.7400 t/hm 2 to 47.6307 t/hm 2,respectively,and its average annual growth was 0.5297 t/hm 2 ;also,the provincial carbon storage became from 3544.61 × 10 4 t to 6206.89 × 10 4 t,and forest carbon density from 15.8348 t/hm 2 to 23.7630 t/hm 2.Although the provincial carbon storage and forest carbon density were thus characterized with increasing,both unit area biomass and carbon storage were far lower than the national average level,and the average carbon density was far lower than the national average（44.91 t/hm 2）,and also the national average level（86 t/hm 2）.The provincial forest quality was still low and growth was poorer,it should be to improve forest management and give full play to land production potentiality.