兰州北山人工侧柏林地土壤渗透性研究

Study on Soil Permeability of Platycladus orientalis Plantation in Northern Mountains of Lanzhou City

侧柏(Platycladus orientalis)人工林是兰州南北两山的主要人工林类型,具有良好的水土保持和水源涵养功能。本文对北山不同灌溉方式、不同栽植年限人工侧柏林地和荒坡地土壤渗透特征进行了研究。结果表明:不同灌溉方式林地的土壤渗透性能存在显著差异,土壤入渗过程符合对数曲线;林地土壤渗透性能随着栽植年限延长呈增大趋势,其土壤入渗过程符合Horton方程,相关系数达到显著水平。与荒坡地相比,人工侧柏林地的入渗速率显著高于荒坡地。

Platycladus orientalis plantation is the major artificial forestry in southern and northern mountains of Lanzhou,and has the function of soil and water conservation.The soil infi-ltraiton characteristics of Platycladus orientalis plantation under different irrigation patterns and different cultivating ages as well as bare-slope were studied.The results showed that just as the following: there were obvious permeability difference in different irrigation patterns.Soil permeability process conformed to logarit...