摘要
Abstract
It is very necessary to do the research on soil and water conservation for the fragile environment and serious soil loss in the northern part of Hebei Province.In this paper,four runoff plots which were located on the slope with wild grasses,wild apricot slope,Robinia pseudoacacia slope and Pinus tabuliformis slope,were set in the Pingfang small watershed of Luanping County,Hebei Province.The rainfall and the amount of runoff,sediment yield and seeping rates of the four runoff plots were analyzed in 2004 and 2005.The results show that the rainfalls are mainly light rain and moderate rain,and the rainfall intensities are mainly with the upper bound of 10 mm/h.The relationship of the four runoff plots＇ total amounts of runoff and sediment yield are in order of waste-grass slopewild apricot slopeRobinia pseudoacacia slopePinus tabuliformis slope.And we can also find that the waste-grass slope plots＇ amounts of runoff and sediment yielding are obviously higher than the others.The average seeping rates of the waste-grass slope plot,wild apricot slope plot,Robinia pseudoacacia slope plot and Pinus tabuliformis slope plot are 65.07%,88.36%,90.16%,90.03%,respectively.The research prove that the soil and water conservation measures of digging silt pits on the slope and then planting wild apricot,Robinia pseudoacacia and Pinus tabuliformis are effective.关键词
水土保持措施/降雨特征/径流/产沙量/入渗率Key words
soil and water conservation measure/rainfall character/runoff/sediment yield/seeping rate分类
农业科技
