摘要
1988年秋季,对黑龙江省西部地区受到严重冲刷的一条典型农田侵蚀沟进行了以生物措施为主的综合治理。采取的主要措施是:在沟头上方营造截流林带,修筑沟头坝;在沟坡两侧营造防蚀林带,削坡插柳,修筑封沟埂;在沟内密插防冲林带,设置土谷坊和柳编谷坊。经过5年的治理,收到了良好的效果。治理后的1993年与治理前的1988年相比:该侵蚀沟每年向源侵蚀速度由2.50m 减少到0.05m;沟帮崩塌速度由每年0.60m 减少到0.03m;每年侵蚀农田数量由1000m^2减少到19.94m^2;平均沟深由2.18m 变为1.66m;泥沙进出量由侵蚀2500m^3变化到淤积358.3m^3,5年内共淤积泥沙720
A multipurpose control mean by biological measures was carried out on a typical farmland gully erosion being scoured seriously in western Heilongjiang Province in the autumm 1988.The main measures include:forest belts were built in the initiative section of the gully to cut down water and a dam was built there;Erosion-protection forest belts were built at each side of the gully and a dike was built there;Scour-protection forest belts were built in the gully. Significant effect has taken on after five years' control.The following numbers tell the effect in 1993 after control compared with 1988 before control.The erosion speed decreased from 2.50m/a to 0.05m/a;the collapsing speed decreased from 0.60m/a to 0.03 m/a;the eroded farmland amount decreased from 1000m^2/a to 19.94m^2/a;the average depth of gully decreased from 2.18m to 1.66 m; the mud and sand amount changed from eroding 2500m^3/a to silting up 358.3 m^3/a;the sludge amount amounted to 720.55m^3 within five years.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1996年第2期79-84,共6页
Journal of Northeast Forestry University
