SHI Rui-jun.Study on Physical Properties of Soil Layer in Broadleaf Forest of Mulan Paddock[J].HEILONGJIANG AGRICULTURAL SCIENCES,2017,(08):70-72.[doi:10.11942/j.issn1002-2767.2017.08.0070]
木兰围场阔叶林土壤层物理性质研究
- Title:
- Study on Physical Properties of Soil Layer in Broadleaf Forest of Mulan Paddock
- 文章编号:
- 1002-2767（2017）08-0070-03
- 分类号:
- S714
- 文献标志码:
- A
- 摘要:
- 为了能够更加深入地了解阔叶林土壤的物理性质，利用土壤烘干法和环刀法,以阔叶林作为研究对象，对其土壤层的物理性质进行研究。结果表明:土层深度与容重呈正相关，土层越深，土壤容重越大，40~60 cm深的土壤容重是表层土壤容重的1.56倍。阔叶林土壤的毛管孔隙度的大小要大于非毛管孔隙度的大小，且随着土层的深入毛管孔隙度逐渐变小。土壤的初渗速率比较大，达到了27.01 mm?min-1，林分的入渗稳渗速率为2.42 mm?min-1，土壤入渗过程中的入渗速率与入渗时间存在较好的幂函数关系。
- Abstract:
- In order to understand the physical properties of broad-leaved forest soil in depth,the physical properties of soil layer were studied by soil drying method and ring-knife method.The results showed that the depth of soil layer was positively correlated with bulk density,the deeper soil layer,the greater the soil bulk density.The soil bulk density of 40~60 cm was 1.56 times of surface soil.The distribution of capillary porosity was greater than the distribution of soil non-capillary porosity in the broad-leaved forest.Capillary porosity was changed with the depth of soil,as the soil layer deepens the porosity of soil decreases gradually.The initial infiltration rate of the soil was relatively large,reaching 27.01 mm ? min-1.The stable infiltration rate reached 2.42 mm ? min-1,and the relationship between infiltration rate and infiltration time in the process of soil infiltration was a power function.
参考文献/References:
备注/Memo
收稿日期：2017-06-11基金项目：国家自然基金资助项目（31500523）；河北省林业厅科学技术研究计划资助项目（1705488）作者简介：史瑞军（1971-)，男，河北省隆化县人，学士，林业工程师，从事林业资源管理研究。E-mail:937962206@qq.com。