降雨時における森林集水域からの水質成分負荷流出特性

抄録

The water qualityo f two forest rivers in central Hokkaidow as surveyedi n the period of storm events in thesummero f 1997t o understandt he run-offc haracteristicosf the loads of waterq ualityc omponenftr omt he rivers.
As the result, t he run-ofcf haracteristicos f the waterc omponentsw ere classifiedin tof our groups:
1) WASH OUT type (SS, PN, PP); Most of loads are discharged with increased flow rate.
2) STEADYR UN-OFtFy pe (Poolt ype)(NO3-ND, O C, D P);R un-oflfo ads increasew ithi ncreaseo f flowr ate but there is a lowcorrelationb etweenf lowr ate and run-offl oads.
3) STEADYR UN-OFFty pe (Non-pootly pe)(Na⁺, K⁺, Ca²⁺, Cl^-, SO₄^2-);There is a high correlationb teween flow rate and the run-offl oads.
4) UNSTEADRYU N-OFFty pe (silicica cid, NH₄⁺-N);There is a low correlation between flowrate and the run-off loads.