采伐对落叶松人工林土壤性质的影响

Impacts of Different Cutting Modes on Soil Properties in Larch Plantations

在黑龙江省带岭林业实验局落叶松人工林采伐迹地上,采用现场取样、实验测试和定量分析的方法,对拖拉机(J-50)、畜力2种不同集材方式的皆伐、择伐作业迹地的土壤物理-化学性质进行研究,结果表明:落叶松人工林在作业后表层土壤体积密度增加,土壤总孔隙度降低,土壤持水量和排水能力均有不同程度的降低,集材道上土壤最大持水量和排水能力降低的幅度均比相应的采伐迹地大;土壤质量最好的是未采伐林地,最差的是皆伐(J-50)集材道。

Effects of tractor skidding and animal skidding on the soil physical and chemical properties of larch plantations under clear cutting and selective cutting in Dailing Forestry Bureau of Heilongjiang Province were studied by means of soil sample collection, experimentation and quantitative analysis. Results indicate that the unit weight of the surface soil in larch plantation increases and total porosity, water holding capacity and drainage capacity decrease after skidding operation. The maximum water holding capacity and the maximum drainage capacity of the soil on skid road decrease more obviously than those on logging sites. The soil quality of the un-cutting forest land is the best, while that of the skid road in clear cutting area is the worst.