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基于野外调查和实验室仪器分析数据,研究了秦岭天然华山松林生物量、碳密度、碳储量的空间分布及其随龄级、海拔变化的规律。结果表明:碳在华山松各器官中的分配以树干所占比例最大,其次为树枝,树皮最小;不同器官含碳率波动在0.488 6～0.519 8之间,顺序为叶>根>干>枝>皮;华山松林生态系统的生物量碳密度为133.59t/hm~2,其中地下部分(0～80cm)约占2/3,地上部分约占1/3;华山松林生态系统的生物量碳密度在海拔1 800～1 900m最大,达142.73t/hm~2,海拔低于1 700m和超过2 300m,都较小,分别为120.81t/hm~2和107.21t/hm~2;6个龄级的天然华山松林的生物量碳密度以平均树龄20a为最小,60a为最大;通过两期清查数据对比可知,其生物量增加了2.17t/hm~2,生物量碳密度增加了0.64t/hm~2。
Based on field investigation and laboratory analysis data, the spatial distribution of biomass, carbon density and carbon storage in Pinus armandii forests in the Qinling Mountains and their changes with age and altitude were studied. The results showed that the distribution of carbon in the organs of Pinus armandi was the largest, followed by the branches with the smallest bark. The carbon content of different organs varied from 0.488 6 to 0.519 8 in the order of leaf> root> stem> The biomass carbon density of Pinus armandii forest ecosystem is 133.59t / hm ~ 2, of which the underground part (0 ~ 80cm) accounts for about 2/3 and the aerial part accounts for about 1/3. The biomass of Pinus armandi forest ecosystem The carbon density was the largest in the range of 1 800-1 900 m above sea level, reaching 142.73 t / hm -2, with altitudes below 1 700 m and over 2 300 m, both of which were relatively small, 120.81 t / hm 2 and 107.21 t / hm 2, respectively The age-class natural Pinus armandii biomass biomass carbon density, the average age of 20a for the minimum, 60a for the maximum; through the comparison of two inventory data shows that the biomass increased by 2.17t / hm ~ 2, biomass carbon density increased by 0.64 t / hm ~ 2.