帽儿山林场4类天然次生林碳储量研究

运用森林生态学典型样地法设立标准地并获取野外数据,采用重铬酸钾-硫酸氧化湿烧法测定植物、土壤中的碳。通过对帽儿山林场4类天然次生林碳素密度及储量的比较研究,结果表明:1)天然次生林主要树种不同器官中碳素密度变化范围在0.331 6~0.501 4 gc/g之间,枯立木、林下植被、枯枝落叶和半分解的有机残体(A00层)各层的碳素密度差异不大,土壤各层的碳素密度的排列顺序为腐殖质(A0层)>表土层(A层)>亚表土层(B层)。2)硬阔叶林生态系统总的碳储量为261.31 tc/hm2,山杨林生态系统总的碳储量为195.20 tc/hm2,蒙古栎林生态系统总的碳储量为196.41 tc/hm2,白桦林生态系统总的碳储量为143.18tc/hm2。3)天然次生林年平均净碳固定量为4.647tc/hm2.a。

Study on Carbon Storage in Four Types of Natural Secondary Forests of Maor Mountain Forest Farm

The paper uses typical sample plot method of forest ecology to obtain field data,and the Walkley-Black acid digestion method for measuring the carbon in the forest and soil is used in this paper.The carbon density and storage in four types of natural secondary forests are studied,and the results show that: 1) the range of carbon density in different apparatus of natural secondary forests is from 0.331 6～0.501 4gc/g,and there is little difference of carbon density in dead standing trees,understory vegetation,dead branches and fallen leaves and semi-decomposed organic things(A_00 layer),carbon density of soil is put in such an order as the humus > the surface soil(A layer) > the second surface soil(B layer) and 2) the total carbon storage of hardwood forest is 261.31 tc/hm~2.the total carbon storage of aspen forest is 195.20 tc/hm~2.The total carbon storage of Mongolian oak forest is 196.41tc/hm~2.The total carbon storage of aspen forest is 143.18tc/hm~2.3) The annual net carbon storage in the natural secondary forests is 4.647tc/hm~2.