【摘要】 根据1998年10月～1999年8月四个季度月对北海湾的调查研究资料,从物理、化学和生物三个方面探讨了该湾水体的自净能力。结果表明:该湾的水动力作用较强,对污染物的迁移、扩散极为有利,在水体自净过程中起主导控制作用;水体温度高、溶解氧含量丰富,使好氧微生物参与下的氧化分解作用极为活跃,有利于加快入海污染物的降解速度,对水体自净过程的贡献仅次于物理作用;从夏季COD与chl a呈显著正相关和广西六大海湾的生物资源量分布状况可以判断,生物降解作用在该湾水体自净过程中具有重要的、直接的影响作用。更多还原

【Abstract】 Based on the quarterly investigation materials from Oct. 1998 to Aug.1999, this paper deals with the self-purifying ability of the (Beihai) Bay in three ways,physics, chemistry and biology. The results showed that the water dynamics of the bay was stronger, its contribution of transfer and diffusion of the pollutants was dominant in the process of self purification. The temperature of water was so high and the content of Do was so rich that the oxidation decomposition microorganism participated in was very active, it developed the degradation velocity of the (pollutants) in the bay. The contribution to the process of self-purifying was less important compared with the physical action. There was positive correlation between COD and chl-a in Summer and the distribution of biological resource volume of the six biggest bays in GuangXi, from that, we can say that the affection of the biodegradation in the self-purifying process of the bay was important and direct.更多还原