【摘 要】
：
目的 考察东江东莞段水体生物膜的形成、发育及活性特征. 方法 采用一种简便的生物膜采样装置,分别于2012年4-9月在富营养化浅水江域-30和100 cm水深处自然培养和收集生物膜.
【机 构】
：
广东医学院公共卫生学院,中国水产科学研究院珠江水产研究所
论文部分内容阅读
目的 考察东江东莞段水体生物膜的形成、发育及活性特征. 方法 采用一种简便的生物膜采样装置,分别于2012年4-9月在富营养化浅水江域-30和100 cm水深处自然培养和收集生物膜. 结果 生物膜的生长共经历了停滞期、增长期、脱落期和恢复生长期四个阶段.生物膜胞外聚糖、化学需氧量和脱氢酶含量均稳定增加,三种指标在变化趋势上存在明显一致性,且与生物量变化差异有统计学意义.表层生物膜生长速度快,并且生物量和有机质含量也较高. 结论 生物膜的培养时间、水体的营养状态影响生物膜的生长速度,不同发育程度下生物膜表现出的活性特征不同.
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