摘要
冀北山区生态环境脆弱,水土流失严重,因此在该区域开展水土保持研究非常有必要。通过在河北滦平县平坊小流域布设荒草地、山杏、刺槐、油松4种径流小区,并分析了2004-2005年降雨、小区产流量、产沙量、入渗率变化。结果表明:该区次降雨多为小雨和中雨,次降雨强度主要集中在<10mm/h范围内;4种小区中产流产沙总量大小为:荒草地小区>山杏小区>刺槐小区>油松小区,且相同降雨条件下,荒草地产流产沙量明显高于其它3种小区,4种小区平均入渗率依次为65.07%,88.36%,90.16%,90.03%。说明鱼鳞坑整地,然后种植山杏、刺槐、油松等措施能够有效拦蓄径流泥沙。
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.
出处
《水土保持研究》
CSCD
北大核心
2011年第5期63-66,共4页
Research of Soil and Water Conservation
关键词
水土保持措施
降雨特征
径流
产沙量
入渗率
soil and water conservation measure
rainfall character
runoff
sediment yield
seeping rate
