摘要
在秦岭北坡水源林区选择不同针阔混交林和落叶混交林林分,对其土壤水文物理性质进行了研究。结果表明:土壤容重、非毛管孔隙度、最大持水量、毛管持水量和最小持水量均为针阔混交林大于落叶阔叶林,40cm土层土壤水分平均(非毛管)滞留贮存量为针阔混交林大于落叶阔叶林。针阔混交林地土壤的渗透性能较好,其平均渗透系数达到了6.93mm/min,是落叶阔叶林地的4.97倍,且同一林地内0—20cm土层的渗透系数均大于20—40cm土层。基于主成分分析,锐齿栎×油松(华山松)混交林地土壤的综合水文效应最优。
Different types of forest community in medium altitude of north Qinling Mountain were chosen to study the soil water physical characteristics. Result showed that in these forests, the soil bulk densities, non-capillary porosity, maximum water-holding capacity, capillary water-holding capacity and field water holding capacity were ranked as mixed forests^deciduous broadleaved forest, while soil non-capillary porosi- ty water-holding amount of 40era layer was ranked as mixed forests^deciduous broadleaved forest. Permea- bility of raixed forest was 4.97 times higher than deciduous broadleaved forest and its mean permeability reaches 6.93 ram/rain. Permeability of 0--20 era layer was higher than that in 20--40 em layer in different types of forest soil. Based on principal component analysis, the comprehensive hydrological effect of oak and pinus tabulaeformis （Pinus armandii） was the highest.
出处
《水土保持研究》
CSCD
北大核心
2012年第5期176-180,共5页
Research of Soil and Water Conservation
基金
国家林业局林业公益性行业科研专项(201004036)
关键词
秦岭
水源涵养林
持水能力
渗透性能
Qinling Mountain
water conservation forest
soil water-holding
permeability
