库都尔林业局森林资源现状分析及碳储量研究

发布时间：2018-04-12 07:36

本文选题：库都尔林业局 + 森林资源现状　；参考：《内蒙古农业大学》2015年硕士论文

【摘要】：森林是最大的陆地生态系统碳储存库,在调节全球碳平衡、降低大气中CO2浓度和维护区域生态环境等方面具有重要的作用。研究森林的生物量、碳储量成为全球碳循环研究中的重点内容,也是森林经理学的研究热点。本研究结合库都尔林业局森林资源二类调查数据,分析了该区的森林资源现状,并以该地区主要树种兴安落叶松、白桦、山杨为研究对象。通过补充调查设置样地,对林分的生物量、碳储量、碳汇价值进行了估算。其研究结果如下：1、通过对库都尔林业局森林资源二类调查成果的分析,对库都尔林业局的森林资源进行了现状分析,确定了库都尔林业局主要森林类型为生态公益林。分析了研究区各类用地面积、蓄积量分析、森林分类、森林起源、各类林木的面积和蓄积、林种结构、树种组成、龄组结构等信息。其中在研究区各类用地面积中,有林地的面积42.87万hm2,占林地面积的88.0%;乔木的林木起源主要为天然林,所占比例达到了81.05%；树种组成中,兴安落叶松、白桦、山杨的比例分别达到了52.10%、43.84%、3.49%。因此,确定了研究区主要森林植被的优势树种为兴安落叶松、白桦、山杨。2、根据兴安落叶松、白桦、山杨各林分的乔木层、灌木层、草本层、枯落物层、土壤层的生物量及碳密度估算出相应层次的碳储量,三种林分的乔木层碳储量分别为：2.32E+07t、7.08E+06t、6.00E+05 t;林下植被层和枯落物层的碳储量总和分别为5.31E+05t、3.69E+05t、3.63E+04t；土壤层碳储量分别为4.53E+07t、3.08E+07t、1.80E+06t。各林分总碳储量分别为6.90E+07t、3.82E+07t、2.43E+06t。3、估算兴安落叶松、白桦、山杨的总碳汇价值为5.16E+11元。其中兴安落叶松的碳汇价值为3.24E+11元,贡献率为62.9%；白桦的碳汇价值为1.80E+11元,贡献率为34.9%；山杨的碳汇价值为1.14E+10元,贡献率为2.2%。
[Abstract]:Forest is the largest terrestrial ecosystem carbon storage, which plays an important role in regulating the global carbon balance, reducing the concentration of CO2 in the atmosphere and maintaining the regional ecological environment.The study of forest biomass and carbon storage has become the focus of the global carbon cycle research, and is also the focus of forest management research.Based on the investigation data of forest resources in Kuduer Forestry Bureau, the present situation of forest resources in this area was analyzed, and the main tree species in this area, Larix gmelinii, Bai Hua and Populus davidiana, were taken as the research objects.The biomass, carbon storage and carbon sink value of the stand were estimated by supplementary investigation.The research results are as follows: 1. Through the analysis of the second kind of forest resources investigation results of Kuduer Forestry Bureau, the present situation of the forest resources of Kudur Forestry Bureau is analyzed, and the main forest types of Kuduer Forestry Bureau are determined as ecological public welfare forest.The information of land area, volume analysis, forest classification, forest origin, forest area and accumulation, forest species structure, tree species composition and age group structure in the study area were analyzed.Among all kinds of land use areas in the study area, the area of woodland is 428700 hm2, accounting for 88.0% of the forestland area; the origin of Arbor is mainly natural forest, and the proportion of Arbor is 81.05%; among the tree species, Larix gmelinii, Bai Hua,The proportion of Populus davidiana reached 52.10 and 43.84 and 3.49 respectively.Therefore, the dominant tree species of the main forest vegetation in the study area are Larix gmelini, Bai Hua, Populus. 2. According to the tree layer, shrub layer, herbaceous layer and litter layer of the stands of Larix gmelinii, Bai Hua and Populus tomentosa,The biomass and carbon density of soil layer estimated the corresponding carbon storage,The total carbon storage of each stand was 6.90E 07tl 3.82E 07tl 2.43E 06t.3.The total carbon sink value of Larix gmelinii, Bai Hua and Populus tomentosa was estimated to be 5.16E11 yuan.The carbon sink value of Larix gmelini is 3.24E 11 yuan, the contribution rate is 62.9 yuan, the carbon sink value of Bai Hua is 1.80E 11 yuan, the contribution rate is 34.9E, and the carbon sink value of Populus davidiana is 1.14E 10 yuan, the contribution rate is 2.2%.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S757.2

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