| 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. |
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