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基于改进内梅罗指数的东海中鹿岛生态养殖区水质评价
章鑫慧,刘好真,李进京,王春琳,王一农,刘懂,徐鹏
0
(宁波大学海洋学院, 浙江 宁波 315211)
摘要:
为明确东海中鹿岛生态养殖区水质现状,于2017年6月对该海区开展了水质调查,结果表明,中鹿岛海区NH+4-N含量、NO-2-N和NO-3-N含量的总和、PO3-4-P含量、pH、盐度和温度的最大值分别为0.395±0.011、0.016±0.001、0.029±0.000 mg/dm3、 8.21±0.00、32.53±0.05、25.07±0.16℃。选取改进内梅罗指数对中鹿岛海区水质进行评价,结果表明,该海区整体水质较为清洁,海区内侧水质水平分布差异显著(p<0.05),存在明显的分块,其原因可能是由水产养殖活动分布格局引起;对改进内梅罗指数进行水层间方差分析的置换检验表明,改进内梅罗指数在水层间差异不显著(p>0.05),间接说明海区水体垂向交换能力较强,有利于底部营养物质的交换,对于天然饵料的生长较为有利。
关键词:  海洋化学  改进内梅罗指数  养殖区  水质评价  中鹿岛  东海
DOI:10.3969/J.ISSN.2095-4972.2019.02.009
基金项目:浙江省公益性行业(农业)科研专项资助项目(201303047); 宁波市科技局攻关项目资助项目(2014C10018)
Water quality evaluation in aquaculture area of Zhonglu Island in the East China Sea based on improved Nemerow index evaluation method
ZHANG Xin-hui,LIU Hao-zhen,LI Jin-jing,WANG Chun-lin,WANG Yi-nong,LIU Dong,XU Peng
(School of Marine Science, Ningbo University, Ningbo 315211, China)
Abstract:
In order to clarify the status quo of water quality in Zhonglu Island ecoaquaculture area in the East China Sea, a water quality survey was launched in June, 2017. The results show that the maximal levels of NH+4-N, total NO-2-N and NO-3-N, PO3-4-P, pH, salinity and temperature in Zhonglu Island sea area are 0.395±0.011 mg/dm3, 0.016±0.001 mg/dm3, 0.029±0.000 mg/dm3, 8.21±0.00, 32.53±0.05 and 25.07±0.16℃, respectively. The selection of improved Nemerow index for evaluation of water quality in the sea area shows that the overall water quality is relatively clean, and the distribution of water quality in the inner water differs significantly (p<0.05) in different locations. There are obvious subblocks, which may be caused by aquaculture activities. Permutation test on the improved Nemerow index by ANOVA between the water layers indicates that the difference in the improved Nemerow index is not significant(p>0.05). It suggests that the vertical exchange capacity of the water body is strong and favors the exchange of nutrients in the bottom and the growth of natural food organisms.
Key words:  marine chemistry  improved Nemerow index  aquaculture area  water quality evaluation  Zhonglu Island  East China Sea

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