CAJ | 학술논문

小流域基流计算结果可反映流域地下水与地表水之间的相互影响.对2007年中山大学珠海滨海水循环综合实验基地上游流域做退水分析,并采用不同方法分割上游河道流量过程线,得到的基流BFI值,即基流量除以河川径流量,变化范围在0.43～0.86,旱季BFI最大值为0.96,雨季最小值为0.41.收集研究区域河道水、地下水以及雨水水样分析D、18O同位素值,根据同位素平衡原理采用二水源过程线分割法计算2～5月流域基流比重,得到上游BFI值0.737、下游BFI值0.68,计算结果与改进的数字滤波法3的计算结果相一致.
소류역기류계산결과가반영류역지하수여지표수지간적상호영향.대2007년중산대학주해빈해수순배종합실험기지상유류역주퇴수분석,병채용불동방법분할상유하도류량과정선,득도적기류BFI치,즉기류량제이하천경류량,변화범위재0.43～0.86,한계BFI최대치위0.96,우계최소치위0.41.수집연구구역하도수、지하수이급우수수양분석D、18O동위소치,근거동위소평형원리채용이수원과정선분할법계산2～5월류역기류비중,득도상유BFI치0.737、하유BFI치0.68,계산결과여개진적수자려파법3적계산결과상일치.
Base flow in the small coastal basin could provide an insight to the interaction of surface water and groundwater.Its separation in the case study basin inside Zhuhai Campus of Sun Yatsen University showed the varied BFIs,defined as the volume of base flow divided by the volume of total stream flow with different methods.The BFI value fell into a range of 0.43-0.86 for the whole year of 2007 with a maximum of 0.96 in the dry season from November to March,and a minimum of 0.41 in the rainy season from April to October.Isotopic features of river water,groundwater and rainwater were used to verify the separation,yielding a similar BFI value of 0.737 in the upper reach and 0.68 in the lower reach during the period from February to May as that by the 3rd digital filter method.