收稿日期: 1999-03-30
修回日期: 1999-06-02
网络出版日期: 1999-12-01
基金资助
国家自然科学基金项目“利用围隔实验研究海洋浮游生态系统对富营养化的响应”(编号:49876030)和国家海洋局地球流体力学和数值模拟重点实验室项目资助。
STUDY OF THE EFFECTS OF EUTROPHICATION ON MARINE ECOSYSTEM BY MESOCOSM EXPERIMENTS
First Institute of Oceanography,SOA,Qingdao 266003,China
Received date: 1999-03-30
Revised date: 1999-06-02
Online published: 1999-12-01
陈 尚,朱明远,马 艳,李瑞香,李宝华,吕瑞华 . 富营养化对海洋生态系统的影响及其围隔实验研究[J]. 地球科学进展, 1999 , 14(6) : 571 -576 . DOI: 10.11867/j.issn.1001-8166.1999.06.0571
The eutrophication in coastal sea occurred mainly by the input of the nutrients from land,and increase the concentration of nutrients and change the ratio among the nutrients and often cause the appearance of phytoplankton bloom or redtide. When the bloom occurs the most energy is allocated the microbial loop, so bacteria reproduce intensively and decompose the organic matter and consume extensively dissolved oxygen, the anoxic environment appears and causes the extensive death of fish, shrimp and shell-fish for choke. The response of marine ecosystem to the eutrophication may be studied and measured quantitatively by the in situ mesocosm experiment. The mesocosm system is mass-conservative system, without the water exchange with the natural sea water, so the system become relatively simple and in which only ecological process occur. Based on the results of mesocosm experiment, the ecosystem model may be developed and validated. The mesocosm experiment is becoming the important tool to carry out research on the global marine ecosystem dynamics(GLOBEC).
Key words： Eutrophication; Marine ecosystem; Mesocosm; Microbial loop; Ecological model.
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