皆伐与不同迹地清理方式对杉木土壤化学性质的影响

以福建将乐国有林场杉木人工林为研究对象,按照立地条件相一致的原则,利用空间代替时间的方法设置皆伐前、皆伐1个月、皆伐3个月、整地1 a、整地3 a、炼山1 a、炼山3 a等不同条件下总计21块标准样地,旨在研究皆伐与不同迹地清理方式对杉木林地土壤化学性质的影响。经过对标准地土壤化学性质测定,结合显著性差异法对试验数据进行处理分析。结果表明:皆伐后土壤化学性质趋于恶化,不同迹地清理方式土壤化学性质差异显著,带状整地法在短期1 a内对土壤化学性质的改善显著强于炼山法,并且炼山3 a后土壤化学性质基本恢复至炼山前,总体看来皆伐后带状整地的迹地清理方式优于炼山法。

Effects of Clear Cutting and Slash Clearance on Soil Chemical Properties of th e Cunninghamia lanceolata Forest

Taking the Jiangle State-owned Forest Farms of Cunninghamia lanceolata Forest in Fujian Province as the research object , according to the principle of site condition consistence , by using space instead of time to set up 21 sample plots un-der 7 different conditions including before clear-cutting, one month after clear-cutting, three months after clear-cutting, one year after soil preparation , three years after soil preparation , one year after burning-slash, three years after burning-slash, we studied the effects of clear-cutting and different slash on the soil chemical properties of Cunninghamia lanceolata forest.By measuring the soil chemical properties of the sample plots and analyzing the experiment data with significant difference method , the soil chemical properties after clear-cutting tended to deteriorating .Soil chemical properties differen-tiated significantly with different slash cleaning up methods .Zonal soil preparation method is much more effective than slash burning method in terms of improving soil chemical properties within one year .Three years after the slash burning , the soil chemical properties basically restored to the way it was before slash burning .Therefore, zonal soil preparation method is better than slash burning method in terms of slash cleaning up after clear -cutting.