Abstract: By using harvesting method,four kinds of shrubs were randomly sampled in northern Shanxi Province.We analyzed aboveground biomass and distribution biomass,and simultaneously constructed predicting model by simple indicators.The conclusions were as follows:Firstly,aboveground biomass differences were larger in various shrubs,and were respectively Vitex negundo var.heterophylla,Rosa xanthina Lindl,Caragana korshinskii Kom.and Ziziphus jujuba var.spinosa(Bunge)Hu in descending order.Rosa xanthina Lindl and Vitex negundo var.heterophylla biomasses from different organization were respectively leaf,older branch and new branch in descending order,while Caragana korshinskii Kom.and Ziziphus jujuba var.spinosa(Bunge)Hu were older brach,leaf and new brach.Secondly,the ratio between branch and leaf was different in different shrubs.Caragana korshinskii Kom.was 2.79 times that of Rosa xanthina Lindl,and the ratio was approximately 1 between Vitex negundo var.heterophylla and Rosa xanthina Lindl.Thirdly,according to different shrubs and different organs from same shrubs to select CH,C and V as independent variable,we constructed aboveground biomass predicting model about 4 types of shrubs,we found the best model was power function.It can be used to calculate the shrub biomass.

Key words: shrub, biomass, distribution pattern, predicting model