Litter Layer Of Pinus Tabulaeformis Plantation With Different Stand Ages Effects On Understory Soils

This paper to Linfen Xi county in different age structure of Pinus tabulaeformis plantation as the research object of forest litter annual litterfall and litter biomass,forest litter in the pHysical,chemical and microbiological effects of decomposition rate and litter layer specific to the effect of water,litter layer elements constitute,litter effect of artificial Chinese pine forest soil properties.The results showed that:the annual litterfall of different age structure of Pinus tabulaeformis Plantation Litter and biomass were floating range were 1.943t/hm2--12.481t/hm2 and 12.229--18.803t/hm2;the floating range of decomposition rate of 0.159t/hm2 a--0.239t/hm2a;different age structure of Pinus tabulaeformis Plantation in the natural water content in the range of 4.68t/hm2--10.59t/hm,the natural water of different artificial forest age structure oil rate in 39.01%--60.02 between the different age structure,artificial pine oil saturated water content in the range of 30.19t/hm2--52.98t/hm2,the saturated oil of different artificial forest age structure ratio between 248.13%--299.85%;the main elements of different age structure of Pinus tabulaeformis Plantation Litter consists of pHospHorus and nitrogen,potassium,carbon;soil pHysical and chemical properties of different artificial P.tabulaeformis forest structure with the age increased and gradually improved,soil pH tended to be neutral,the soil bulk density and field capacity to increase the amount of water to a certain extent.