摘要
本文根据1979年水土保持统计资料,减少土壤流失对各种治理措施的(水土保持)效益做了概略的估计,从总的减沙效益来看,在剧烈侵蚀区为20％,在极强侵蚀区为29％,全区平均为24％。其中沟道治理起决定性作用,约占总减沙效益的71％。
Estimates the efficiency of various soil erosion control measures in north Shaanxi based on statistical data of soil and water conservation of 1979.In view of erodibility, the total soil, conserving efficiecy in severe eroding area was only about 20%, and in heavy eroding area it was 29%. In the whole region, thetotal soil conserving efficiency averaged 24%. The gully erosion control played a key role, and its soil conserving efficiency amounted about 71% of the total.
出处
《西北林学院学报》
CSCD
1991年第4期59-64,共6页
Journal of Northwest Forestry University
关键词
土壤侵蚀
防治
效果
陕北地区
control measures
soil conserving efficiency
North Shaanxi
