鄱阳湖星子站水位62年变化规律分析

摘要

To better understand the hydrological features of Poyang Lake and provide reference for the construction of water conservancy facilities, on the basis of the measured water level at Xingzi Hydrological Station from 1935 to 2008, the basic char-acteristics of water level at the station and its variation trend are analyzed. The results showed that the variation features of water level of Poyang Lake can be expressed using the data of Xingzi Hydrological Station; The variation law in long temporal size is stable over 62 years; the high water level period is from June to September, the low water level period is from December to March, and the normal water level period is April, May, October and November. The evolution trend of water level of Poyang Lake is that the duration of "lake-like in high water level period" shortens and the duration of "river-like in low water level period" is prolonged.%为了深入认识鄱阳湖水文特征并为湖区水利枢纽建设提供参考,基于星子站1935~2008年期间62 a水位实测资料,对该站水位基本特征及演变趋势进行了分析。结果表明：使用星子水文站水位数据表征鄱阳湖水位变化特征科学合理；水位在62 a长时间尺度上的变化规律稳定,高水位的时间集中在6~9月,低水位的时间集中在12月至次年3月,平水位的时间集中在4,5,10月和11月；鄱阳湖水位演变呈现“高水是湖”的自然景观的持续时间缩短,“低水似河”的自然景观的持续时间延长。