【作者】 石嵩；

【导师】 魏江生；

【作者基本信息】 内蒙古农业大学 ， 农业资源利用， 2015， 硕士

【摘要】 本文以兴安盟科右前旗与科右中旗三种主要灌木林(山杏、柠条、虎榛子)为研究对象,通过实测法测定植被层生物量、各组分含碳率与碳密度,研究三种灌木林含碳率与碳密度的变异关系。旨在说明立地条件、起源方式对三种灌木林含碳率、碳密度的影响,并通过碳密度根冠比的变异程度找出预测根系碳储量的准确方法,为今后制定该地区三种灌木林的碳汇规范奠定基础。主要研究结定果是：(1)三种灌木林的立地条件、起源方式对其林木层与草本层含碳率没有决定性影响,植被层含碳率主要由植物的遗传特性决定,三种灌木林林木层与草本层的平均含碳率分别为：山杏林43.20%、40.34%；柠条林41.33%、42.01%；虎榛子林45.01、39.18。灌木林各器官含碳率大小顺序均为枝>叶>根。灌木林土壤有机碳含量由不同地区的土壤类型决定,基本表现为科右前旗土壤有机碳含量>科右中旗土壤有机碳含量。(2)灌木林林木层碳密度由其立地条件,即其所生长地区决定,而草本层碳密度与立地条件和起源方式无关。山杏林林木层碳密度在科右前旗大于其在科右中旗,大小分别为2.01t·hm-2和1.24t·hm-2,草本层碳密度平均值为0.67t·hm-2；柠条林与之相反,大小分别为2.93 t·hm-2和4.09t·hm-2,草本层碳密度平均值为0.80t·hm-2；虎榛子林林木层碳密度为28.94t·hm-2,草本层碳密度平均值为0.47t·hm-2。三种灌木林各器官碳密度大小排序均为枝>根>叶。土壤层为灌木林碳密度的主体,其大小由土壤类型决定,山杏林在科右前旗和科右中旗0-60cm土层碳密度分别为177.32t·hm-2和109.67t·hm-2；柠条林在科右前旗和科右中旗0-60cm土层碳密度分别为185.88t·hm-2和50.87-hm-2；虎榛子林0-30cm土层碳密度为86.48t·hm-2。更多还原

【Abstract】 In xingan league Keyouqianqi and the origin of the keyouzhongqi of two different types of three kinds of main shrub (prunus sibirica, caragana korshinskii, tiger hazelnuts) as the research object, through the measurement method of determination of layer of vegetation biomass, carbon content and carbon density of components, studies three kinds of shrub carbon content and carbon density variation relationships. Way for the site conditions, origin of three kinds of shrubbery carbon content, the influence of carbon density, and through the root-shoot ratio of carbon density variation find root carbon accurate method, for the next three bushes of the region carbon sink specification.The main research knot dingguo is:(1) Three kinds of site conditions, origin of shrubbery way of the tree layer and herb layer carbon rate no decisive influence, vegetation layer containing carbon rate is mainly determined by the genetic characteristics of plant, three kinds of shrub forest tree layer and herb layer, the average carbon rate is respectively:mountain almond shaped by 43.20%,40.34%; Caragana korshinskii forest were 41.33%,42.01%; Tiger hazelnut Lin,45.01,39.18. Shrub each organ carbon content size order are all branch> leaf> root. Shrub soil organic carbon content is determined by the different parts of the soil type, basic performance is right banner of division of right wing front banner of soil organic carbon content> soil organic carbon content.(2) Shrub forest carbon layer density by the site conditions, namely the growth area decision, the herb layer carbon density has nothing to do with the site conditions and the way of origin. Carbon density in keyouqianqi is greater than the mountain almond shaped trees layer in keyouzhongqi, Size 2.01t·hm-2 and 1.24t·hm, herb layer average carbon density of 0.67 t·hm-2; korshinskii Lin, by contrast, the size of 2.93 t·hm-2 and4.09t·hm-2, herb layer average carbon density of 0.80 t·hm-2;Tiger hazelnut Lin Linmu layer carbon density of 28.941·hm-2. Three kinds of shrub each organ carbon density order are all branch> root> leaf. Layers as the main body in the shrub of carbon density, the size is determined by soil type, almond shaped hill on the Keyouqianqi and Keyouzhongqi 0-60 cm soil carbon density were 177.32 t-hm-2, and 109.67t-hm-2; Korshinskii Lin on the Keyouqianqi and Keyouzhongqi 0-60 cm soil carbon density were 185.88t·hm-2, and 50.8t·hm-2; tiger hazelnut Lin 0-30 cm soil carbon density of 86.48t·hm-2.更多还原