Aboveground Biomass Estimation Model of Two Shrubs to Aohan Banner Northern Wind-sandy Area in Inner Mongolia

Taking two main shrubs（Salix gordejevii，C.microphylla）in Aohan，Chifeng as the research object.To construct the plant individual aboveground biomass estimation model using different functions and different independent variables.Screening out optimal aboveground biomass estimation model，which was biomass significantly correlated，and the best fitting degree.Results showed that，optimal biomass regression equation for the two typical shrubs was a power function equation.Determination coefficient R2 range was 0.626～0.915，SEE value range was 0.179～0.508，F test to achieve significant level，Salix gordejevii to DH as optimal model of independent variable，model was y=2.193x1.291，（R2=0.915，p＜0.01）；C.microphylla to S as optimal model of independent variable，model was y=0.008x2.349，（R2=0.878，p＜0.01）.As the growth condition of shrubs with a spatial heterogeneity，using the model required accuracy testing and calibration in any other study areas.