莲都区公益林植被生物量与碳储量动态变化研究

Dynamic analysis of Vegetation Biomass and Carbon Storage of Public Welfare Forests in Liandu District

基于公益林区1999年和2008年两期森林资源二类调查数据,在掌握不同森林类型面积及其蓄积变化动态的基础上,运用蓄积量换算生物量因子法,估算了浙江省丽水市莲都区公益林的生物量、碳储量。结果表明:从1999年到2008年,公益林单位面积生物量从72.33 t·hm-2增长到113.33 t·hm-2,年均增长率4.91%;公益林的总生物量从253.33×104t增长到396.93×104t,增加143.60×104t。总碳储量从122.66×104t增长到198.47×104t。增加75.81×104t,年均增长率5.25%。说明通过多年公益林建设,林分结构逐步得到优化,生物量及碳储量有效积累,生态功能更加增强。

Two detailed investigation were made of public welfare forest resouces in 1999 and 2008. In dif- ferent forest types ,on the basis of the area and volume dynamic change characteristics, the volume of bio- mass conversion factor method was used for calculating the public welfare stock. The results showed that from 1999 to 2008, the per unit area biomass creased from 72. 33 t · hm-2to 113.33 t · hm-2, the average annual forest biomass and carbon of public welfare forest in- rate was 4.91% ; Total bio- mass increased from 253.33 × 104 t to 396.9 × 104 t, which had 143.60 × 104 t growth. Total carbon in- creased from 122. 66× 104 t to 198.47 ×104 t,having 75.81 ×104 t growth and 5.25% growth. Through many years of establishing public welfare forest, its stand structure became mized,its biomass and carbon accumulation increased effectively, therefore its ecological great improvement. Average annual gradually opti- function had a