长江冲淡水区细菌生产力研究

刘子琳; 越川海; 宁修仁; 史君贤; 蔡昱明

长江冲淡水区细菌生产力研究

1.
国家海洋局第二海洋研究所, 浙江杭州310012;国家海洋局海底科学重点实验室, 浙江杭州310012
2.
日本国立环境研究所, 筑波305-0053
3.
国家海洋局第二海洋研究所, 浙江杭州310012

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出版历程
- 收稿日期: 1999-06-30
- 修回日期: 2000-09-11

Bacterioplankton production in dilution zone of the Changjiang (Yangtze River) Estuary

1.
Second Institute of Oceanography, Hangzhoa 310012, China;Key Leboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China
2.
Notional Environment Institute, Japan Environment Department, Tsukuba 305-0053, Japan
3.
Second Institute of Oceanography, Hangzhoa 310012, China

摘要

摘要: 为了解细菌在长江口冲淡水区生态系营养动力学过程中的重要作用,笔者于1997年10月10日至20日,1998年5月14日至6月1日在观测海区以及在绿华山海域设置大水体围隔生态系实验装置进行细菌生产力的现场观测研究.结果表明,秋季观测海区平均细菌生产力(C)为(1.44±1.30)μg/(dm³·h),高值出现在测区中部的A₃,B₃和C₃站.春季测区表层细菌生产力(2.43±1.22)μg/(dm³·h)高于底层(1.01±0.43)μg/(dm³·h),高值出现在测区中部的A₃和B断面诸站.秋、春季平均细菌生产力相当于浮游植物初级生产力的23%.秋季和春季表层细菌数量分别为(5.22×10⁸±0.88×10⁸)个/dm³和(1.97×10⁸±1.10×10⁸)个/dm³.1998年5月18日至6月1日在围隔实验点的自然海区中细菌生产力变幅范围为0.13～5.79μg/(dm³·h),平均值为(2.47±1.60)μg/(dm³·h).围隔装置内加可溶性磷(PO₄^3-)实验,春季细菌生产力由1.28μg/(dm³·h)增长至32.20μg/(dm³·h),其增长幅度低于秋季1.43～43.47μg/(dm³·h).油污染实验中细菌生产力由6.61μg/(dm³·h)增长至37.97μg/(dm³·h),呈逐日上升趋势.
- 细菌 /
- 生产力 /
- 长江口
Abstract: The bacterioplankton production and bacterioplankton abundance were surveyed in dilution zone of the Changjiang Estuary and a mesocosm experimental device for enriched phosphate experiment and oil contaminated experiment was placed in the waters nearby Luhua Island during October 1997 and May 1998.The results show that the average bacterioplankton production in spring is higher than that in autumn, the production at the surface water is higher than that at the bottom in the survey area; the higher values appear in the middle of the area.The results from mesocosm experiment with adding phosphate and oil contaminated show that the bacterioplankton production increases rising trend day by day during the experiment period.
- bacterioplankton production /
- estuary /
- Changjiang River

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