Experiment on Broad-leaved Transformation of Pinus massoniana Pure Forest
By taking the Pinus massoniana pure forest in Xinfeng County as the research object,replanting Liquid-ambar formosana in Pinus massoniana(C1),replanting Schima superba in Pinus massoniana(C2),replanting Liq-uidambar formosana+Schima superba in Pinus massoniana(C3)and Pinus massoniana pure forest(CK)were set up in the selected experimental stand in 2016.The effects of various treatments on the growth factors,stand structure factors,microclimate in the forest,shrub and grass diversity,understory litter and vegetation biomass indi-cators and the incidence rate of Bursaphelenchus xylophilus disease of Pinus massoniana were compared and ana-lyzed.The results showed as the following three aspects.(1)Replanting broad-leaved trees in Pinus massoniana pure forest could promote the growth of Pinus massoniana and optimize the stand structure.(2)The treatments of replanting broad-leaved trees could effectively reduce the temperature and increase the humidity in the forest,and improve the microclimate in the forest.The effect of replanting evergreen broad-leaved trees on improving the mi-croclimate in the forest was more obvious than that of replanting deciduous broad-leaved trees.The treatments of replanting broad-leaved trees could also increase the species diversity and richness of shrub and grass layer in the for-est.(3)Supplementary inoculation of broad-leaved trees,especially deciduous broad-leaved trees,was conducive to increasing the biomass of understory litter and understory vegetation,and had a certain impact on the prevention and control of Bursaphelenchus xylophilus disease infection in Pinus massoniana.With the increase in the variety of supplementary inoculation of broad-leaved trees,the control effect had the tendency of improvement.
Pinus massoniana pure forestbroad-leaved transformationplant diversity
万方数据
维普
