辽东地区不同林型土壤理化性质研究

Soil Physical & Chemical Properties of Different Forest Types in Western Liaoning

不同林型内土壤的理化性质存在差异,柞树林内土壤结构疏松,渗透能力强,土壤物理性质最好,其次为红松林,杂木林内最差,10～20 cm土层深度渗透速率仅为0.57 mm.min-1。从化学性质来看,阔叶树种土壤中养分含量较针叶林高,比较而言,柞树林内土壤各养分含量比杂木林内高。作为针叶树种的红松林土壤内,其速效养分含量较其他林型高。

There are differences among soil physical chemical properties of different forest types.Xylosma racemosum forest whose soil has loose structure have the stronger infiltration capacity the best physical properties;soil physical properties of Xylosma racemosum forest is the best,followed by Pinus koraiensis,the weed forest whose soil depth penetration rate is only 0.57 mm·min-1 with the soil layer of 10-20 cm is the worst.From the chemical properties,each content of soil nutrient in broad-leaved species is higher than that in coniferous forest.In contrast,the soil nutrient content in Xylosma racemosum forest is higher than that in the weed forest.As the coniferous species,the available nutrient content in the soil of Pinus koraiensis forest is higher than that in the other forest types.