赤峰地区油松人工林碳储量研究

Study on Carbon Storage of Pinus tabulaeformis Plantations in Chifeng

森林生态系统碳储量是研究森林碳汇功能的重要参数,以赤峰市油松人工林为研究对象,对不同立地、不同林龄、不同林种油松林生物量、碳储量进行研究,结果表明：油松人工林生物量随着树龄增长而增加,各个器官的生物量也不相同,干的生物量最大,枝的生物量最小。油松各器官平均含碳量变化不显著,其中,树枝平均含碳量为499.38 g/kg,叶为495.95 g/kg,树干为471.11 g/kg,树根为472.52 g/kg。油松人工林各林龄乔木层碳密度在9.2-30 t/hm2之间波动,乔木层碳密度随林龄增加呈现先升高后下降的趋势,其变化呈乘幂关系,拟合方程为：y=9.6328x0.868,拟合率为0.9459。油松人工林乔木层平均碳储量为21.20 t/hm2,赤峰地区油松人工林乔木层总碳储总量为362.1033万t。

The carbon storage of forest ecosystem is an important parameter of forest carbon sink. Taking Pinus tabulaeformis plantation in Chifeng as the research object, the biomass and carbon storage of Pinus tabulaeformis in different sites, tree - ages and forest species have been studied. The results show that the biomass of Pinus tabulae- formis plantation improves with the increase of tree - age, and the biomass of each organ is different, the biomass of stems is the maximum, and the one of leaves is the minimum. The average carbon content in each organ of Pinus tabulaeformis don＇t change significantly, the average carbon content of branches is 499.38 g/kg, the one of leaves is 495.95 g/kg, the one of stems is 471.11 g/kg,and the one of roots is 472.52 g/kg. The carbon density of arbor layer of Pinus tabulaeformis plantations at different tree ages changes from 9.2 t/hm2 to 30 t/hm2. The carbon den- sity of arbor layer changes in a trend of increasing first and then decreasing with the increasing of forest age, which the changes have a power relation, the fitting equation is y = 9. 6328x0. 868, the fitting rate is 0. 9459. The average carbon storage of arbor layer of Pinus tabulaeformis plantations is 21.20 t/hm2, the total carbon storage of arbor layer of Pinus tabulaeformis plantations in Chifeng is 3 621 033 t.