Aboveground biomass and its allocation of main shrub types in Karst hills of Guilin, China.

Aboveground biomass and its allocation of main shrub types of Decaspermum esquirolii Shrub,Loropetalum chinense Shrub,Bauhinia championii Shrub,Rosa cymosa Shrub,and Alchornea trewioides Shrub were investigated in Karst hills of Guilin based on field measurement.The results showed that sequence of the aboveground biomass of the five shrub types were as follows:Decaspermum esquirolii ShrubRosa cymosa ShrubBauhinia championii ShrubLoropetalum chinense ShrubAlchornea trewioides Shrub and the aboveground biomass were 29.48 t/hm2,18.76 t/hm2,15.18 t/hm2,9.78 t/hm2 and 7.54 t/hm2,respectively.For the five shrub types,the average of aboveground biomass of were 16.15 t/hm2,the sequence of biomass in different layers were as follows:shrub layerlitter layerherb layer,and the percentage of the shrub layer biomass account for 81.67%,11.89% and 6.44%,respectively.As for the percentage of the constructive specie which accounted for shrub layer,the sequence as follows:Alchornea trewioidesLoropetalum chinenseRosa cymosaBauhinia championiiDecaspermum esquirolii.