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通过研究表明 ,不同类型植被减少径流和泥沙的功效不同 ,东坡不同类型植被小区径流深由大到小的顺序为 :荒坡 >沙棘 (平茬 ) >沙棘 +小叶杨 >农地 ,北坡为油松 >油松 +沙棘 >沙棘林 ;东坡产沙量由大到小的顺序为农地 >荒坡 >沙棘 (平茬 ) >沙棘 +小叶杨 ,北坡为油松 >油松 +沙棘 >沙棘。不同类型植被在生长季的土壤水分平均值均很低 ,其变化范围在6 .33%～ 9.6 0 % ;沙棘林地土壤形成利用性干层
The results show that different types of vegetation have different functions of reducing runoff and sediment. The order of the runoff depth of different types of vegetation communities in Dongpo is descending order: descending slope> seabuckthorn (stubble)> seabuckthorn + poplar> farmland, north The order of Pinus tabulaeformis> Pinus tabulaeformis + Seabuckthorn> Seabuckthorn forest is as follows: farmland> barren hill> seabuckthorn> seabuckthorn + poplar and the north slope of Pinus tabulaeformis> Pinus tabulaeformis + Seabuckthorn> seabuckthorn. The mean values of soil moisture of different types of vegetation in the growing season were very low, ranging from 6 .33% to 9.6 0%. The dry layer