The BOD 5- DO is an important index that reflect s the organic pollution extent of water, but the variations of the index have clos e relationship with water temperature.

• 生化需氧量溶解氧(BOD5 DO)是反映水体有机污染程度的一个重要指标,而这些指标的浓度变化与水体温度有着密切关系。