CAJ | 학술논문

河流生态流量是生态水文研究的重要部分。鉴于不同等级流量有其特殊生态作用，本文借鉴水文变化指标体系（ IHA）评价参数及环境流量组成（ EFC）分类方法，将河道流量分为特枯流量、低流量、高流量、洪水过程，并以此为基础绘制生态流量过程线。最后以东江水库为例，绘制其枯水年、平水年、丰水年的年生态流量过程线。结果来看：①高流量过程发生于3-10月，但不同典型年有所差异，年径流越大，高流量量级相应变大，并且首次发生高流量时刻也有所提前。②特枯流量主要发生于11、12、1、2月，来流越大其持续时间越短，但其量级基本不变。③在相同典型年内，高流量有个先增后减的过程，在5月或6月达到最大值；特枯流量持续时间则在1月或12月取得最大值。
하류생태류량시생태수문연구적중요부분。감우불동등급류량유기특수생태작용，본문차감수문변화지표체계（ IHA）평개삼수급배경류량조성（ EFC）분류방법，장하도류량분위특고류량、저류량、고류량、홍수과정，병이차위기출회제생태류량과정선。최후이동강수고위례，회제기고수년、평수년、봉수년적년생태류량과정선。결과래간：①고류량과정발생우3-10월，단불동전형년유소차이，년경류월대，고류량량급상응변대，병차수차발생고류량시각야유소제전。②특고류량주요발생우11、12、1、2월，래류월대기지속시간월단，단기량급기본불변。③재상동전형년내，고류량유개선증후감적과정，재5월혹6월체도최대치；특고류량지속시간칙재1월혹12월취득최대치。
The ecological flow of river channel is an important part of eco-hydrology research.In view of the special ecological function of different grades of flow,the paper divided the river discharge into ex-treme low flow, low flow, high flow pulse and flood a new method was put forward by means of IHA indi-cators and EFC method.In this method.Based on which ,it draw the ecological flow hydrograph .The method was applied to Dong Jiang reservoir, and gave the e-flow hydrograph of dry year, mean year and wet year.The results indicated that①the high flow pulses occur from March to September, but there are difference in different typical years, the more the yearly runoff, the larger the high flow magnitude be-come.The time of the first high flow occurs.②The extreme low flow mainly occur in January, February, November and December.the larger the discharge ,the shorter the time of duration of discharge, but the magnitude of extreme low flow changes little.③In the same typical year, the high flow has the process of first increase and then decrease.The maximum is in May or June;the duration time of extreme low flow reaches the maximum in January or February.