Study On The Biomass Of The Main Trees At Bayingzhuang Forest Land In Hebei Province

The research on forest biomass and its allocation pattern is one of the most important study contents of global carbon cycling and Carbon storage.The Bayingzhuang is timber production base in North Chinaabout exporting seedlings of tree and producing wood of Larix principis-rupprechtii.Investigation and study figures in planted Larix principis-rupprechtii and Pinus tabulaeformis.vihWe. investigating some broad-leaved forest.including natural secondary Betula platyphylla, Populus davidiana and Quercus Mongolic. In this paper, it researched trees in Bayingzhuang, HeBei, it based on the forest inventory data and the biomass of individual biomass. biomass prediction models, the biomass distribution ratio in different organs of the tree, the correlation between the stands index including the tree height, DBH (diameter on the breast height) and different organs of an individual tree biomass were studies, During August to October in2010.In this paper, through the correlation analysis among DBH、tree height and the biomass of different organs about Larix principis-rupprechtii、Pinus tabulaeformis and Betula natural secondary forest, it showed that the relationship between the DBH、 the tree height and the biomass is mathematical model. The research analyzed the roots-to-shoot ratio (RSR) of each tree. The results showed that:Larix principis-rupprechtii (0.236). Pinus tabulaeformis(0.194), Betula platyphylla(0.238),Populus davidiana (0.281), Quercus Mongolic (0.404);The order is Quercus Mongolic> Betula platyphylla> Larix principis-ruppi-echtii> Populus davidiana> Pinus tabulaeformis. It established the ages (A), DBH as independent variables,and the RSR as the dependent variable, made the mathematical regression model.Through studying analytic trees. the thesis analyzed relationship between the tree age(A) and the average production of the stand(W) and established functions. The results showed that:Larix principis-rupprechtii:W=4.8139*A22075773、Pinus tabulaeformis.:W=2.5317*A1023，W=129.46/(l+e27054-0.114427*A) or W=-3.8959+2.8509*ABetula platyphylla W=9550.0168/(1+e5.0087-0.01433*A). estimation model.each individual plant and forest productivity have been estimated.Five stand biomass distribution of the order of performance for the shrub layer<piles layer<herb layer<litter layer<forest layer<soil layer.