【摘要】 本研究基于松花江佳木斯段2023年1—12月5个监测断面水质监测数据，采用综合水质指数(WQI)评价水质，并分析其季节变化规律。结果表明各断面的WQI值均较高，整体水质状况较好，汤旺河口内段(S2)最高，佳木斯下游(S1)最低。季节特征较突出，水质最好为春秋季，最差为夏季且波动最大，可能是受高温、径流等影响所致；从箱线图可以看出四季WQI离散程度存在差异。更多还原

【Abstract】 This study is based on water quality monitoring data from five monitoring sections of the Songhua River in Jiamusi from January to December in 2023. The comprehensive water quality index(WQI) was used to evaluate water quality and analyse seasonal variation patterns. The results show that the WQI values of all sections are relatively high, indicating good overall water quality, with the highest value at the inner section of the Tangwang River estuary(S2) and the lowest at the downstream section of Jiamusi(S1). Seasonal characteristics were prominent, with the best water quality observed in spring and autumn, and the worst in summer, which also exhibited the greatest fluctuations, possibly due to factors such as high temperatures and runoff. Box plots revealed differences in the dispersion of WQI values across the four seasons.更多还原