The Build Study Of Acer Truncatum Bunge Biomass Calculation Model In Western Hills Of Beijing

Taking Acer truncatum Bunge in Beijing as research object,this paper tries to draw phytomass through measured data and SPSS and selects the most optimized mathmatical model of each part based on model selection criteria.The model includes five parts:gross,trunk,crown, branch and leaf with the unit being kg. The result indicates that the estimated accuracy of the established total,crown,runk,branch models of Acer truncatum Bunge is more than97%;the estimated accuracy of the established leaf model of Acer truncatum is slightly lower,but also to91%.The models biomass about total,trunk.crown, branch,leaf are folllowing:total W=0.043(D2H)0994trunk W=0.03(D2H)0977crown W=0.014(D2H)1.02branch W=0.012(D2H)1.015leaf W=0.002D2.136H0.942Biomass models established in the past, there is a problem in the model. Incompatibility exists between the individual biomass model and the total model, On this issue, in this paper the solution is to adopt the2:2ratio of adjustment(Total allocation method in accordance with the proportion).Ultimately, get compatible biomass model.Prepared by the method of the above study, establish the biological scale of Acer truncatum, and successfully achieve the purpose of the independent model compatible with the total model, that is:Crown with trunk is equal to the total and branches with leaves is equal to the crown. In order to solve one set of data of two results, each model estimates to maintain coherence.