Abstract

The results of model calculations of the characteristics of anoxic zones in the Mozhaisk Reservoir over a 57-year period have been analyzed. A two-dimensional box hydrological model of the reservoir has been used to calculate variations of the values of ecological variables with a daily time step. The main regularities in the formation and development of anoxic conditions in different parts of the reservoir have been revealed. The factors that govern the space and time distribution of anoxic zones in the reservoir in different years have been identified. Empirical dependences of the volumes of anoxic zones on the characteristics of water mass stability in the reservoir and blooming index, which characterizes the rate of primary production in reservoir ecosystem, have been obtained. The identified trends toward an increase in anoxic zone volumes over the period under consideration characterize the progressive eutrophication of the Mozhaisk Reservoir.

中文翻译：

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基于模型计算的莫扎伊斯克水库缺氧区长期变化分析

摘要

分析了Mozhaisk水库57年间缺氧区特征的模型计算结果。水库的二维箱式水文模型已用于计算生态变量值随每日时间步长的变化。揭示了储层不同部分缺氧条件形成和发展的主要规律。已经确定了控制不同年份储层缺氧区的时空分布的因素。获得了缺氧区的体积对水库水质稳定性特征和水华指数的经验依赖性，水华稳定性是表征水库生态系统初级生产力的特征。