研究了马尾松与杉木混交人工林伐区索道集材作业前后林地土壤理化性质的变化，结果表明：集材作业后除土壤体积质量和结构体破坏率指标增大外，其余土壤理化性质指标均下降，而且表层土壤(0~20 cm)所受影响较底层土壤(20~40 cm)大；集材作业导致表层土壤体积质量增大0.02 g/cm，土壤结构体破坏率提高617%，最大持水量下降3.65%，总孔隙度减小1.98%；同时表层土壤的有机质、全N、水解性N、全P、速效P、全K、速效K等指标的含量分别下降1.34 g/kg、0.04 g/kg、6.46 mg/kg、0.01 g/kg、0.04 mg/kg、1.01 g/kg和11.00 mg/kg。分析了集材作业造成土壤理化性质变化的原因，并从森林生态采运角度出发，提出减少索道集材作业对林地土壤破坏的技术措施。

The effect of skidding with a suspended cable on the physical and chemical properties of soil in artificial mixed forest of Pinus massoniana and Cunninghamia lanceolata was investigated. The results showed that the other indexes of physical and chemical properties of soil declined while the volume weight of soil and the damage rate of soil structure were increasing. The surface soil (0—20 cm) were impacted more seriously than the bottom soil (20—40 cm). The bulk density of surface soil and the damage rate of surface soil structure increased 0.02 g/cm and 6.17% respectively, the saturated water retention and the total porosity of top soil decreased 3.65% and 1.98% respectively. The content of main nutrient of top soil, such as organic matter, total N, hydrolytic N, total P, available P, total K and available K, reduced 1.34 g/kg, 0.04 g/kg, 6.46 mg/kg, 0.01 g/kg, 0.04 mg/kg, 1.01 g/kg and 11.00 mg/kg respectively. Besides, the reasons of change of many physical and chemical properties of soil caused by operation of skidding were analyzed. Some technological measures for reducing the damage of skidding by suspended cable on the soil were put forward from the view of ecological harvesting operation.