Xiaoxing’anling Birch Natural Forest Ecosystem Carbon Storage Research

In this paper, the Xiaoxing’anling natural birch forest ecosystem plots laid investigation, sample collection and laboratory analysis, and data processing, complete harvest method, model method, dry method of calculation and analysis of natural birch forest forest ecology Xiaoxing’anling single wood biomass model,Biomass distribution, the distribution characteristics of carbon storage density, and the distribution characteristics of carbon storage,(1) leaf biomass of the optimal model for the W=0.012D1.662H0.49(R2=0.711),the optimal model for branch biomass W=5.921D1.925H-1.251(R2=0.793),dry biomass optimal model W=0.046D1.55H1.163(R2=0.969),root biomass, the optimal model for W=0.016D2.171H0.584(R2=0.933),the total biomass of the optimal model is W=0.273D1.789H0.51(R2=0.939).Natural birch forest ecosystem biomass of tree layer, shrub layer, herb layer, litter layer, and half of the decomposition of biomass, total biomass242.62t/hm2each part of the performance of tree layer144.92t/hm2> The semi decomposition46.13t/hm2> litter layer35.22t/hm2> shrub layer12.58t/hm2herb layer3.77t/hm2.(2) birch organ carbon content distribution leaves> stem> ulterior motives roots, carbon content according to different levels, sorted according to the average of the upper leaves> middle leaves> lower leaves, the upper branch> lower branches> middle branch bark> sapwood> heartwood, two-root> root level> three root. Birch according to age group rate of organ components of carbon content single tree species calculated on a weighted arithmetic average of carbonaceous rate law are aged forest> mature nearly cooked forest; the different organs of birch according to diameter class group component carbon content of single wood species by the weighted arithmetic average carbon content law are the diameter of group A> diameter of group B> diameter of group C. Analysis of variance showed that the bark and sapwood, bark and heartwood reach a significant level, and the remaining differences were not significant level(p<0.05).The arithmetic mean of the weighted average carbon content of each age class and diameter group as the Xiaoxing’anling natural birch carbon content is46.49%lower than Birch in North China the average carbon content of51.25%.Herbaceous layer of forest ecosystems layer of carbon content was47.82%>47.2%of the litter layer> shrub layer,46.79%>46.49%of the tree layer semi-decomposed layer of35.87%>3.17%of the soil layer.(3) Xiaoxing’anling natural birch forest ecosystem carbon storage density by the tree layer, shrub layer, herb layer, litter layer, half-decomposed layer and soil layer, the total carbon storage density110.56t/hm2, the performance of the various components of tree layer The67.37t/hm2> litter layer16.62t/hm2> half decomposition layer16.54t/hm2> shrub layer5.88t/hm2> soil layer2.35t/hm2> herb layer1.8t/hm2.Layers of carbon storage reserves of the total forest ecosystem carbon storage stocks were: tree layer accounted for61percent, accounted for5%of the shrub layer, herbaceous layer accounted for2%of the litter layer accounted for15%,15%semi-decomposed layer, soil layer accounted for2%. Among them, the tree layer accounted for the largest proportion of the soil layer accounted for the smallest proportion. Carbon storage in the distribution of tree layer> litter layer> half-decomposed layer> shrub layer> soil layer> herb layer.