Research On Biomass, Productivity, Growth Characteristic And The Analysis Of Ecological Benefits Of Cinnamomum Burmanni Plantation

Biomass is the measure of forest ecological system function of the number of the most basic characteristics, biomass based data has become a measure forest structure and function change is the important index of the ecological system for the carbon and carbon cycle research provide key data in carbon cycle, global climate change study play an important role. This study on Cinnamomum burmanni plantation of biomass and productivity were determined, understanding of forest age and tree height, DBH, and volume, the correlation between them, to master the tree species in this area growth dynamics, to make effective management measures to improve the quality and quantity of forest resources has important practical significance.This paper adopt standard sample plot survey method, by using trunk analytic method, the quadrat harvest method, the method of layered harvest in guangxi d all1980forest reforestation Cinnamomum burmanni plantation biomass, productivity and growth rule was research. The results of the study showed that:1.32year old Cinnamomum burmanni plantation monoclonal total biomass as high as935.87kg·strains-1,of which the ground part is757.17kg, underground part is178.70kg, respectively accounted for80.91%and19.09%of the total biomass. Each organ biomass the largest is the trunk (426.40kg), and the youngest is fine root (2.75kg), accounted for45.56%of the total biomass per and0.29%, the whole plant each organ biomass size order:trunk> great branches>root hill>bark>branchlets>leaf>coarse root>deadwood>>root of fine roots.2, Cinnamomum burmanni plantation forest stand total biomass for600.60t·hm-2, tree layer of total biomass for592.41t·hm-2, accounting for98.64%of the total forest biomass, tree layer aboveground part and underground part were479.29t·hm-2and113.12t·hm-2, the ground part of the biomass accounted for the total biomass of the tree layer and the stand total biomass of80.90%and79.80%, respectively underground part of tree layer always stand biomass and total biomass of19.10%and18.83%; Forest biomass in vertical direction in the order of the size of the tree layer>litter layer>shrub layer>herb layer, the distribution of forest biomass present ground cover (litter layer) than live ground cover, shrub layer and herb layer) distribution pattern.·3,32years raw Cinnamomum burmanni stand productivity for23.10t·hm-2per year, in Joe, irrigation and herb three vegetation layer productivity size distribution for tree layer (22.25t·hm-2)> shrub layer (1.261t·hm-2)> herb layer (0.44t·hm-2), respectively in the forest stand total productivity of96.31%,5.46%and1.92%.4, Cinnamomum burmanni tree height, DBH and volume total increment growth rule are basically the same, all increases with age, and when a three increment were17.6m,32.55cm and0.539m3.Tree height growth in maximum (0.90m) appeared in the afforestation after a6, the highest average increment appeared in afforestation after a9. Years of DBH growth overall present a first growth falling growth trend, the highest average increment for6a2.02cm. The volume growth in successive years with tree age of increasing first growth decline, in successive years increment peak for a220.035m3,volume number for a mature age of32.5, Cinnamomum burmanni growth rule regression equation fitting, tree height, DBH and forest age regression model with Richard model optimal, volume to SuMaKe model for optimal, fitting correlation coefficient R2were all above0.997, the sum of squared residuals is lesser, growth prediction model has higher accuracy, and can be applied to production practice.6,32year old Cinnamomum burmanni plantation ecological system provided by the ecological service value totaled90000.hm-2per year, including single ecological service value size sequence is as follows:fixing carbon and releasing oxygen value>water conservation value>the soil and water conservation value>purify air value, single ecological service value of fixing carbon and releasing oxygen value, water conservation value the soil and water conservation value and purify air value value respectively for44500·hm-2per year,27600·hm-2per year,12200·hm-2per year and5700·hm-2per year.