摘要
该文以流域治理前径流站实测输沙值为依据，运用拓扑分析法预测流域治理后理论输沙值，与治理后实测输沙值对比，求得流域下垫面及坡面减沙效益。并以延河流域为例，与水保、水文法对照，取得令人满意的效果。
The dissertation utilizes the measured sandy soil values as a basis before the basin is sand-controlled,and then by using topological forecasts decides the theoretical sandy soil values during the basin is sand-controlled. Comparing with these values,we can get a new method to detect the basin decreased sandy soil benefit of its ground and its sloping fields. By taking the Yanhe basin as an example and contrasting with both the waten-and-soil conservative way and the hydrlogic way,we gain a satisfactory conclusion.
出处
《水土保持通报》
CSCD
北大核心
1994年第3期12-19,共8页
Bulletin of Soil and Water Conservation
关键词
拓扑预测
减沙效益
延河
topological forecasts
the decreased sandy soil benefit
theoretical sandy soil values
the Yanhe basin
