湘乡市林地森林碳储量及碳密度研究

通过对湘乡市林地的森林碳储量、碳密度及碳储量的空间分布特征进行研究,得出:①在各优势树种组中,中生阔叶树组的碳储量和碳密度都是最大的,碳储量排序依次为:中生阔叶树组>马尾松组>杉木组>竹木组>国外松组>经济林组〉慢生阔叶树组>灌木组>速生阔叶树组,碳密度排序依次为:中生阔叶树组>国外松组>竹木组>马尾松组〉慢生阔叶树组>杉木组>经济林组>速生阔叶树组〉灌木组;②除马尾松组和中生阔叶树组外,各优势树种小班的碳储量主要集中分布在0~100t的区域内,且与人类活动呈负相关。

Study on Carbon Storage and Carbon Density of Forest Land in Xiangxiang

In this paper, by studying the spatial distribution characteristics of forest carbon storage, carbon density and carbon storage in forest land of Xiangxiang City, the paper drew the following conclusions : 1 ) Among all the different dominant tree species groups, the medium-broad broad-leaved trees group had the largest carbon stocks and carbon density which the carbon stocks were ordered by size: medium-broad broad-leaved trees group > Masson pine group > Chinese fir group > Bamboo group > Foreign pine group > Economic forest group > Slow-growing broad-leaved tree group > Shrub group > Fast-growing broad-leaved tree group and the carbon density was ranked by order: middle-broad broad-leaved tree group > foreign pine group > bamboo-wood group > Masson pine group > slow-growing broad-leaved tree group > fir group > economic forest group > fastgrowing broad-leaved tree group > shrub group. 2) Except for the Masson pine group and the middle-leaved broad-leaved tree group, the carbon stocks of the dominant tree species in small classes were mainly concentrated in the 0-100 t area, and were negatively correlated with human activities.