Analysis of Root Biomass in the Mixed Forest of Eucalyptus and Michelia macclurei
[Objective]Mixed forest of building materials and tree species was one of the effective ways to improve the quality and efficiency of forestry.Studied the differences and changes in root biomass of mixed forest species was beneficial for understanding the adaptability of tree species and the mixed effect.[Method]The root biomass of the mixed forest of 10-year-old Eucalyptus and Michelia macclurei and its pure forest control in Guangxi State-owned Bobai Forest Farm was studied using the standard wood excavation method.[Result]At 10 years of age,there were significant differences in root biomass among different forest types.The total biomass per plant of Eucalyptus and M.macclurei in the mixed forest was 41.309 kg and 47.661 kg,respectively.The total root biomass of individual Eucalyptus trees in mixed forests was higher than that in pure forest controls,with an increase of 20.83%;In mixed forests,the root biomass of individual M.macclurei plants was slightly lower than that of the corresponding pure forest control;The total biomass per unit area of the mixed forest and its control was 70.92,67.95,and 52.82 t/hm2,respectively;The biomass per unit area of mixed forests increased by 28.64%compared to pure Eucalyptus forests.[Conclusion]The order of root biomass of different diameter classes in the Eucalyptus and M.macclurei mixed forest was:root pocket＞coarse root＞medium root＞fine root.The 1∶2 mixed afforestation model of Eucalyptus and M.macclurei is beneficial for the cultivation of large-diameter Eucalyptus trees and the improvement of mixed forest productivity.
万方数据
维普
