CAJ | 학술논문

基于鄱阳湖水文特征，建立鄱阳湖最小生态需水计算模型。研究将频率95％对应的水位为湖泊最低生态水位，根据鄱阳湖水位-面积关系曲线，得到对应的鄱阳湖湖区面积为1503.9 km2。通过折算将水面蒸发转换成湖面蒸发，得到湖面净蒸发量为483.09 mm，湖区年最小生态耗水为7.3亿m3。采用计算河道内生态需水的方法计算出湖生态需水，运用最小月平均流量法、逐月最小流量法、 Tennant法、90％保证率最枯月平均流量法和90％保证率逐月流量法等，对出湖河道生态需水进行计算，并用Tennant法对结果进行评价，通过分析比较得出90％保证率逐月流量法更适合确定鄱阳湖出湖最小生态流量，得到出湖最小生态需水为777.1亿m3，最终得到鄱阳湖最小生态需水为784.4亿m3。研究结果对鄱阳湖流域生态保育、水生态与水环境保护及水资源管理，提供重要科学依据。
기우파양호수문특정，건립파양호최소생태수수계산모형。연구장빈솔95％대응적수위위호박최저생태수위，근거파양호수위-면적관계곡선，득도대응적파양호호구면적위1503.9 km2。통과절산장수면증발전환성호면증발，득도호면정증발량위483.09 mm，호구년최소생태모수위7.3억m3。채용계산하도내생태수수적방법계산출호생태수수，운용최소월평균류량법、축월최소류량법、 Tennant법、90％보증솔최고월평균류량법화90％보증솔축월류량법등，대출호하도생태수수진행계산，병용Tennant법대결과진행평개，통과분석비교득출90％보증솔축월류량법경괄합학정파양호출호최소생태류량，득도출호최소생태수수위777.1억m3，최종득도파양호최소생태수수위784.4억m3。연구결과대파양호류역생태보육、수생태여수배경보호급수자원관리，제공중요과학의거。
Based on hydrological characteristics of the Poyang Lake basin , the model for computation of the minimum ecological water requirement is developed .The water level with frequency of 95%is defined as the minimum water level .The drainage area of the Poyang Lake basin is computed as 1503.9 km2 based on the re-lations between water level and drainage area .The evaporation is decided to compute the lake water surface e-vaporation and the value is 483.09 mm and the minimum ecological water consumption is 0.73 billion m3 .Mo-reover , methods of the instream ecological water requirements , the minimum monthly average streamflow , monthly minimum streamflow , Tennant method and 90%guaranteed minimum monthly average streamflow are used to compute the minimum ecological water requirement of the outflow from the Poyang Lake basin as 77.71 billion m3 and the minimum ecological water requirement of the Poyang Lake basin is 78.44 billion m3.The results of this study are of great importance for conservation of ecological environment , aquatic ecological envi-ronment and water resources management within the Poyang Lake basin .