In order to reveal the pollution characteristics of pollutants in atmospheric wet deposition of Zhoucun Reservoir, the atmospheric wet deposition samples of zhoucun reservoir from March 2016 to February 2017 were collected and the mass concentrations of nitrogen, phosphorus and dissolved organic matter(DOM)in the wet deposition were measured, and the pollution characteristics of pollutants and the variation law of atmospheric wet deposition were analyzed. The results show that the precipitation of Zhoucun Reservoir is mainly concentrated in summer and autumn, accounting for 68.50% of the whole year, and the total nitrogen concentration in precipitation is between 1.67 and 7.63mg/L, with ammonia nitrogen and nitrate nitrogen as the main components, accounting for 52.91% and 28.49% of the total nitrogen, respectively. The annual wet deposition fluxes of nitrate-nitrogen and ammonia-nitrogen in precipitation were 772.45 mg/m2 and 1411.99mg/m2, respectively, which had a significant positive correlation with precipitation(P<0. 01). The precipitation in atmospheric wet deposition is mostly the heavily polluted water body of Inferior Class V based on single factor water quality assessment and comprehensive pollution index method. The maximum wet deposition fluxes of total phosphorus and organic matter occured in summer, and had a significant positive correlation with precipitation(P<0. 01). The organic matter in atmospheric wet deposition is mainly fulvic acid, which shows strong autogenous source characteristics Fulic-like substance was the majority proportion of dissolved organic matter, and the rainwater exhibited strong autochthonous component characteristics.
周石磊,孙悦,黄廷林,等.周村水库大气湿沉降氮磷及溶解性有机物特征[J].水资源保护,2020,36(3):52-59.(ZHOU Shilei, SUN Yue, HUANG Tinglin, et al. Characteristics of nitrogen, phosphorus and dissolved organic matter in atmospheric wet deposition of Zhoucun Reservoir[J]. Water Resources Protection,2020,36(3):52-59.(in Chinese))复制