| To evaluate the effects of different vegetation restoration of Pinus massoniana on the water-holding capacities
of soil and litter in southern subtropical region of China. Three kinds of experimental forest belonging to under-story
intercropping transformation (transformation model Ⅰand transformation model Ⅱ) and natural regeneration (natural
regeneration Ⅲ) of low -benefit P. massoniana were selected and the water -holding capacities of soil and litter were
measured. Soil bulk density, porosity and water -holding capacities of soil were not significant among three kinds of
experimental forest. Effects of different vegetation restoration on soil bulk density, porosity and soil water holding capacity were not obvious. The maximum water-holding capacities and non-capillary water-holding capacities of soil in three stands followed the order of transformation model Ⅰ> transformation model Ⅱ> natural regeneration Ⅲof P. massoniana, the capillary water-holding capacities in three stands followed the order of transformation model Ⅱ> natural regeneration Ⅲ>transformation model Ⅰof P. massoniana, while natural regeneration Ⅲ> transformation model Ⅱ> transformation model Ⅰ in field water-holding capacity of three stands. Litter biomasses were not significant among three kinds of experimental forest, and ranged from 13.74 to 18.56 t/hm2. The maximum litter water-holding capacity, maximum retain capacity and effective retain capacity of transformation model Ⅱand natural regeneration Ⅲof P. massoniana were obviously higher than those of transformation model Ⅰ, and impounding runoff functions of transformation model Ⅱand
natural regeneration Ⅲ of P. massoniana were obviously higher than that of transformation model Ⅰ.The maximum water holding capacities of litter layer of transformation model Ⅰ, transformation model Ⅱand natural regeneration Ⅲof P.
massoniana were much smaller than those of the soil layer, which accounted for 2.26%, 3.02% and 3.28% of soil waterholding
capacities of those respectively. The study provided scientific basis for near natural transformation of lowbenefit
P. massoniana stand, forest management and assessment of service function of forest ecosystem. |
