Due to the influence of environmental pollution, phytoplankton blooms often arise in many lakes and reservoirs in China (during) spring through autumn.

在春至秋季，由于环境污染的影响，我国许多湖泊和水库中经常发生水华现象。

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It is very essential in the study of environmental change and pollution monitoring to sample the undisturbed sediment from shallow water areas, such as lakes and reservoirs.

在对湖泊或水库等浅层水域的环境变化研究和环境污染检测中，浅层水域的淤泥质沉积物取样是一项必不可缺的工作。

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The pollution load calculation models of freshwater aquiculture were reviewed, including chemical analysis method, material balance method, box model for lakes and reservoirs, etc.

综述了淡水养殖污染负荷估算的方法： 化学分析法、竹内俊郎法及其同类方法、物料平衡法、湖泊和水库的箱式模型法。

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