人工林伐区不同集材方式对林地土壤的影响

选择福建人工林伐区5种常用集材方式进行作业试验,分析不同集材方式对林地土壤理化性质的影响,结果表明:5种集材方式作业后,土壤理化性质指标都发生了明显的变化,且各种土壤指标的变化值因集材方式的不同而异。经主成分分析,5种集材方式对林地土壤理化性质的干扰影响由大到小依次为土滑道集材、手扶拖拉机集材、手板车集材、人力担筒集材和全悬空索道集材。从生态采运角度出发提出减少集材作业对林地土壤破坏影响的技术措施。

Effect of Different Skidding Ways on the Trail Soil of Artificial Forest Cutting Area

The effect of five kinds of different skidding ways on the physical and chemical properties of trail soil in our country's southern artificial forest area was analyzed by operating test.The results showed that the indexes of physical and chemical properties of trail soil have changed after skidding,and the changing degree of indexes of different skidding ways is different.Logging methods are put in order by degree of disturbance by principle component analysis.The result is that clear cutting with dirt chute skidding is of largest disturbance.The interference influencing of the others from great to small degrees successively is clear cutting with walking tractor logging,clear cutting with push cart logging,clear cutting with manpower logging and clear cutting with suspended cable logging.Some technological measures for reducing the damage of skidding on the soil were put forward from the view of ecological harvesting operation.