Study On Coral Grass Interplanting Pattern And Biomass Under The Collective Forest Zone

This paper takes Fujian Sanming City area three yuan coral grass interplanting stand as the object of study,through field survey sample, onstructing and screening out the sarcandra’ leaves、branches and the optimal model and the influencing factors of biomass aboveground biomass., put forward the optimization scheme of grass coral interplanting mode, the research conclusion is as follows:(1)Using simple correlation analysis, principal component analysis and partial correlation analysis on the factors that affect sarcandra biomass, it can be found out that the type of forest、canopy density、 soil fertility、slope position and slope are closely related with biomass.(2)There is highest correlation between the ground biomass of Grass coral and crown width、height and ground diameter. But analysis the different combination of these three factors factor CH, DH, D2H, A, V with biomass to do correlation, it can be found out that the correlation of factors were higher than a single factor. So it is need to chose the combination factors during building model.(3) The coral grass biomass used linear, binomial, three type, the power function and the index of five kinds of regression model fitting.It illustrates that the best model of planting sarcandra biomass is the power function equation and the ground biomass are always in considenting the DH as independent variables to build the model of high precision, the model is as follows:Wleave=0.040*(DH)1.167、Wsten0.143*(DH)1.800、Waboveground=0.156*(DH)1.472(4) On the basis of study, this paper referenced to the plant experience of SanYuan area,design the ridge gentle slope mode, steep slope mode and gully mode, optimize the existing coral grass planting pattern.