【摘要】 对天然针阔混交林弱度和中度择伐10a后林地土壤的理化性质进行分析,结果表明:土壤密度和结构体破坏率均下降,而最大持水量和总孔隙度均上升;土壤有机质、全氮、水解氮和全磷的含量均上升,而全钾、速效钾和速效磷的含量均略有下降。说明弱度和中度择伐10a后林地土壤结构稳定性、水分、孔隙状况和养分含量基本得到恢复,并有所改善。更多还原

【Abstract】 The soil physic-chemical properties of natural mixed stand of conifer and broad-leaved trees in low and medium intensity cutting operation site after 10 years were quantitatively analyzed.The results showed that the bulk density of soil and the damage rate of soil structure decreased,while the maximal saturated water retention of soil and the total porosity of soil increased.As for organic matter in soil,total N,hydrolytic N and total P increased,but total K,available K and available P reduced.That is to say,the soil aggregate stability,soil moisture property,soil porosity and soil nutrient were basically recovered and partly improved after 10 years.更多还原