庙沟林区旱季不同林地土壤的渗透性能研究

在对庙沟林区旱季5种类型的林分地以及裸地土壤物理性状测定的基础上，对其土壤的渗透性能进行了研究。结果表明，不同林地土壤的容重、含水率、总孔隙度以及初渗透和稳渗速率均有一定差异。同一林分内林地不同土层土壤的初渗和稳渗速率表现出的规律，是表层土壤（0—20cml渗透性能要优于下层土壤的渗透能力；而不同林分，其林地土壤平均初渗透能力的大小顺序为：天然灌木林地〉云杉一桦树混交林〉桦树纯林〉落叶松纯林〉落叶松一沙棘未成林地〉裸地。

Study on Different Forest Soil Permeability in Dry Season Miaogou Forest Area

Based on the determine of soil physical properties of five types forest soil and bared land in drought seasons Miaogou forest area, the study on soil permeability were conducted, the results showed that there were differences in bulk density, moisture content, total porosity, initial and ultimate infiltration capacity , the rules of initial and ultimate infiltration capacity in different soil layers in the same standing forest as follows： the permeability of surface soil is better than that of subsoil, the size order of forest soil average initial permeability in different standing forest was： natural shrub land〉picea-birch mixed forest〉birch pure forest 〉larch pure forest〉 larch-sea buckthorn non restocking forest land〉bared land.