不同封育类型灌木林地土壤物理性状研究  

Study on Soil Physical Properties of Shrub for Different Exclusion Measures

作　　者：杨本琴[1] 余新晓[1] 岳永杰[1] 高志亮[1] 

机构地区：[1]水土保持与荒漠化防治教育部重点实验室北京林业大学,北京100083

出　　处：《北方园艺》2009年第4期170-173,共4页Northern Horticulture

基　　金：国际科技合作资助项目(2006DFA01780)

摘　　要：研究了北京市密云县西沟林场封山育林地区不同封育措施灌木林地土壤物理性状和土壤渗透性能。结果表明:在封造、封禁、封育3种封育措施的灌木林地中,土壤容重为:封造灌木林地>封禁灌木林地>封育灌木林地,土壤总孔隙度、非毛管孔隙度、毛管孔隙度、饱和蓄水量、有效涵蓄量、毛/饱和蓄水量的顺序为:封造灌木林地<封禁灌木林地<封育灌木林地。封育灌木林地土壤初始入渗速率是封禁灌木林地的1.45倍,是封造灌木林地的1.85倍。前30min累积入渗量顺序为:封育灌木林地>封禁灌木林地>封造灌木林。从土壤物理性状和渗透性能来看,封育措施能更好的改良土壤结构、降低土壤容重和增加土壤总孔隙度,提高灌木林土壤水源涵养和理水调洪功能。soil physical properties and soil infiltration of shrub for different exclusion measures were researched in exclusion area of Gubeikou in Miyun, Beijing. The results showed as the follows： the sequence of soil bulk density was planting model shrub〉closing model shrub〉semiarid enclosed shrub among the three exclusion measures. The sequence of soil total porosity was planting model shrub〈closing model shrub〈semiarid enclosed shrub. Capillary porosity and uncapillary porosity showed the same trend as the total porosity. The soil initial infiltration rate of semiarid enclosed was 1.45 times than that of closing model shrub which was 1.85 times than that of planting model. The sequence of cumulative capacity infiltration capacity within the initial 30 rain was： semiarid enclosed shrub〉closing model shrub〉planting model shrub. According to the soil physical properties and infiltration capacity, semiarid enclosed measure can better im- prove soil structure,reduce soil bulk density,increase the soil physical properties, and improve soil infiltration capacity, water conservation and flood water function.

关 键 词：封山育林 土壤孔隙度 水源涵养 土壤入渗 

分 类 号：S755[农业科学—森林经理学] S718.516[农业科学—林学]