Study on Ecological Water Demand of Baiyangdian Lake

雄安新区作为北京非首都功能疏解的承接地，注重生态环境保护与绿色发展。白洋淀作为其重要生态水体，对区域生态平衡至关重要。本研究利用2021~2022年水位数据，通过Origin软件拟合水位与水面面积的关系，计算了生态水位控制在6.5~7.0 m时的水面面积范围。结合2021~2022年的蒸发量和降雨量数据，得出白洋淀生态需水量为1.64亿m3~1.88亿m3，为白洋淀多水源补水提供了科学依据。Xiong’an new area, as the undertaking place of Beijing’s non-capital function relief, pays much attention to ecological environment protection and green development. As an important ecological water body, Baiyangdian Lake is very important to the regional ecological balance. Based on the water level data from 2021 to 2022, the relationship between water level and water surface area was fitted by Origin software, and the range of water surface area was calculated when the ecological water level was controlled at 6.5 m~7.0 m. Combined with the evaporation and rainfall data from 2021 to 2022, the ecological water demand of Baiyangdian Lake is 164 million m3~188 million m3, which provides a scientific basis for multi-source water replenishment of Baiyangdian Lake.