冀北山地油松、蒙古栎林土壤水分—物理性质研究  

Study on soil water physical properties of Pinus tabulaeformis and Quercus mongolica forests in mountainous area of north Hebei province

作　　者：杨坤[1] 丁杰[1] 胡静霞[1] 杨新兵[1] 

机构地区：[1]河北农业大学,河北保定071000

出　　处：《河北林果研究》2016年第2期116-121,共6页Hebei Journal of Forestry and Orchard Research

基　　金：河北省林业厅科技项目"冀北山区森林生态系统健康评价技术研究"(1403451);林业公益性行业科研专项子课题"冀北山区典型森林生态系统健康经营技术研究与示范"(200804022F)

摘　　要：土壤是森林生态系统的组成成分和物质基础。以冀北山地油松林、蒙古栎林、油松蒙古栎混交林作为研究对象,分析和比较了林下土壤水分—物理性质,结果表明:土壤容重随土层深度的增加而增加,由大到小排序为:油松林(1.30g/cm^3)、蒙古栎林(1.14g/cm^3)、油松蒙古栎混交林(1.10g/cm^3);土壤总孔隙度由大到小排序为:蒙古栎林(48.04%)、油松蒙古栎混交林(42.58%)、油松林(33.58%);土壤最大持水量由大到小排序为:蒙古栎林(40.32%)、油松蒙古栎混交林(38.81%)、油松林(33.58%);地表土壤稳渗速率由大到小排序为:油松林、油松蒙古栎混交林、蒙古栎林,土壤入渗速率与入渗时间存在明显的幂函数关系。Soil is the component and material basis of forest ecosystem. This article took Pinus tabulaeformis forest, Quercus mongolica forest, and the mixed forest of Pinus tabulaeformis and Quercus mongolica as the research objects in mountainous area of north Hebei province in China, analyzed and compared these forests＇ soil moisture - physical properties. Results showed that the soil bulk density increased with the increase of soil depth, the descending order of which was Pinus tabulaeformis forest （1.30 g/cm3） , Quercus mongolica forest（1. 14 g/cm3）, and the mixed forest of Pinus tabulaeformis and Quercus mongolica （1.10 g/cm3）. With the increase of soil depth, the soil total porosity reduced gradually, the descending order of which was Quercus mongolica forest （48. 04%）, Pinus tabulaeformis and Quercus mongolica mixed forest （42.58%）,and Pinus tabulaeformis forest （33.58%）. The descending order of soil maximum water holding capacity of these forests was Quereus mongolica forest （40. 32%）, Pinus tabulaeformis and Quercus mongolica mixed forest （38. 81%）, and Pinus tabulaeformis forest （33.58 %）. The infiltration rate of the surface soil in a descending order was Quercus mongolica forest, Pinus tabulaeformis forest, and the mixed forest of Pinus tabulaeformis and Quercus mongolica. The descending order of the steady infiltration rate was P inus tabulae f ormis forest,Pinus tabulae f ormis and Quercus mongolica mixed forest,and Quercus mongolica forest. There was an obvious functional relationship between soil infiltration rate and infiltration time.

关 键 词：冀北山地 土壤水分—物理性质 土壤入渗 

分 类 号：S714.7[农业科学—林学]