河北片麻岩山区坡地产流特征

采用人工模拟降雨的方法研究了河北省片麻岩山区坡地的产流特征，结果表明：在人工降雨条件下，水分蒸散量与气温有关，蒸散率为５％～１８％；土壤入渗速率与土地利用状况关系紧密，土壤入渗率油松〉刺槐〉荆条灌木林〉荒坡草地，隔坡沟状梯田〉鱼鳞坑〉荒坡草地；坡面工程措施和造林可减小径流系数，能有效地拉蓄地表径流。

The Character of Forming Flow on Sloping Fields in a Mountainous Area with Gneiss of Hebei

The character of forming flow on sloping fields was researched adopting manpower simulates rainfall in a Mountainous Area with gneiss of Hebei. The result show ed. that the capacity of moisture evaporation is related to air temperature in condition of manpowesr simulate rainfall and the evaporation rate is 5%-18%. The rate of infiltration is related to different ground using status. The capacity of infiltrating rate of ground with the Chinese pines is most and the locusts, the shrubbery's the barren sloe and lawn in proper order; The capacity of infiltration rate of ground with different ground using status is the terraced and trenched fild with slope, scale pit and the barren sloe and lawn in proper order. Adopting engineering measure and planting tree can decrease ground runoff coefficient and hold back ground runoff effectively.