Community Recovery and Stand Growth after Constructing the Secondary Broadleaved Forest into the Edible Fungi Raw Material Forest

The research found that the economic effect was relatively high with the selection felling management,and the managgement was advantageous to the rapid community recovery,the stand stocking already reached the level before the selection felling with 7-year-long forest conservation.Although the number of edible fungi timber gained with the clean felling reproduction with artificial promotion was 40% or so higher than that of fungi timber gained with the selection felling utilization,because the managemental tensity was too high,the reserved young trees were damaged heavily,which was disadvantage to the growth and recovery of forest wood after felling,the stocking increasing amount during the forest conservation period was 64.7% and 73.41% of that with the selection felling regeneration and that of the control in the area without management.The dynamic monitor result showed that the community recovery was relatively rapid after adopting the measures of selection felling and the clean felling reproductions with artificial promotion.The ground bud plant and 1-year-old plant proportions increased because of the transmittance's increasing sharply and the mass intrusions of heliophilous and indeterminate tree species after the thinning.In the 7th year,the phaenerophyte proportion was already close to the proportion of phaenerophyte in the area without management,the species diversity indexes of different layers of arbor,brush,and grass were higher than the index of natural broad leaved forest without management,but the species homogeneous degrees of the different layers were close to the degree of the forest.The study also found that the soil nutrient loss was small with the 2 reproduction managemental modes,the forest land soil fertility already reached the former natural forest land soil fertility level through the 7-year-long recovery.