论文部分内容阅读
根据内蒙古第六次森林资源连续清查资料,利用优势树种基础数据计算了内蒙古森林碳储量的变化。结果表明:内蒙古森林总碳储量为7.48亿t,占同期国家森林资源总碳储量的9.59%。优势树种的平均碳密度为28.73t/hm2,同时优势树种固碳能力差异明显。其中,阔叶混交林固碳能力最大(80.98t/hm2),其次是樟子松(67.44t/hm2),第三是白桦(49.13t/hm2);每公顷固碳40t以上的优势树种依次为云杉(45.16t/hm2)、落叶松(44.69t/hm2)、针阔叶混交林(44.15t/hm2)、栎树(40.37t/hm2)。固碳量10t以下的优势树种依次为槐树(7.78t/hm2)、榆树(7.32t/hm2)、山丁子(5.70t/hm2)和椴树(4.36t/hm2)。
According to the sixth continuous forest inventory data in Inner Mongolia, the change of forest carbon storage in Inner Mongolia was calculated using the basic data of dominant species. The results showed that the total forest carbon reserves in Inner Mongolia was 748 million tons, accounting for 9.59% of the total carbon storage of national forest resources in the same period. The average carbon density of dominant tree species was 28.73t / hm2, while the difference of carbon fixation ability among dominant tree species was significant. Among them, the maximum carbon sequestration of broad-leaved mixed forest (80.98t / hm2), followed by Pinus sylvestris (67.44t / hm2), the third is white birch (49.13t / hm2); (45.16 t / hm2), larch (44.69 t / hm2), coniferous and broadleaf mixed forest (44.15 t / hm2) and oak tree (40.37 t / hm2). The dominant species under 10t carbon sequestration were Ash tree (7.78t / hm2), Ulmus pumila (7.32t / hm2), Xiadingzi (5.70t / hm2) and Linden tree (4.36t / hm2).