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枸杞岛贻贝养殖水域碳氮磷分布格局
引用本文:王旭,赵旭,章守宇,周曦杰.枸杞岛贻贝养殖水域碳氮磷分布格局[J].水产学报,2015,39(11):1650-1664.
作者姓名:王旭  赵旭  章守宇  周曦杰
作者单位:上海海洋大学海洋科学学院, 上海 201306,上海海洋大学海洋科学学院, 上海 201306,上海海洋大学海洋科学学院, 上海 201306,上海海洋大学海洋科学学院, 上海 201306
基金项目:公益性行业(农业)科研专项(201003068);国家自然科学基金(41176110)
摘    要:于2013年贻贝成熟期和幼苗期对枸杞岛贻贝筏式养殖水域营养分布和碳分布格局开展相关实验。结果表明:从生态健康角度,夏季成熟期的贻贝养殖造成养殖海域氮、磷营养盐浓度升高,尤其是无机氮浓度显著高于非养殖区(P<0.05),养殖区处于受磷限制性的重富营养化,对其水体健康产生一定压力;秋季幼苗期贻贝养殖使养殖海域氮、磷浓度均降低,尤其是无机氮浓度显著低于非养殖区(P<0.05),与夏季分布格局相反,对水体有净化作用。从生态效应看,贻贝养殖使表层水体中溶解无机碳浓度显著低于非养殖区(P<0.05),产生碳汇效应;同时,贻贝养殖使水体中溶解有机碳浓度显著高于非养殖区(P<0.05),由于丰富的氮营养盐,溶解有机碳处于不稳定态,为碳源。因此,成熟期与幼苗期贻贝养殖对其水域健康产生不同作用,养殖的碳汇、碳源还有待进一步的系统研究。

关 键 词:富营养化  生态健康  溶解碳  生态效应  贻贝养殖
收稿时间:3/6/2015 12:00:00 AM
修稿时间:2015/6/24 0:00:00

Distribution pattern of dissolved carbon,nitrogen and phosphorus in mussel culture areas of Gouqi Island
WANG Xu,ZHAO Xu,ZHANG Shouyu and ZHOU Xijie.Distribution pattern of dissolved carbon,nitrogen and phosphorus in mussel culture areas of Gouqi Island[J].Journal of Fisheries of China,2015,39(11):1650-1664.
Authors:WANG Xu  ZHAO Xu  ZHANG Shouyu and ZHOU Xijie
Institution:College of Marine Science, Shanghai Ocean University, Shanghai 201306, China,College of Marine Science, Shanghai Ocean University, Shanghai 201306, China,College of Marine Science, Shanghai Ocean University, Shanghai 201306, China and College of Marine Science, Shanghai Ocean University, Shanghai 201306, China
Abstract:Shellfish provide an important environmental service by filtering a large amount of suspended organic matter,which could otherwise lead to the organic enrichment of sediments and the related impact.The impact of shellfish on the water column nutrient concentration(nitrogen,phosphorus)and dissolved carbon distribution was investigated during maturity and seedling period at a mussel farm (Mytilus edulis) of Gouqi Island.In order to understand the effect of mussel culture on water health and dissolved carbon pattern during the maturity and seedling periods,we studied the concentration of dissolved carbon,nitrogen and phosphorus on the spatial scales and the change in distribution pattern on time scales.The result illustrates that the concentrations of nitrogen and phosphorus in zones are higher than those in controls in maturity stage,in particular the nitrogen (P<0.05).The emissions and filter-feeding of mussel lead to the damage of the water health.On spatial scales,the distribution pattern of nitrogen,phosphorus in summer is contrary to the autumn.The water was purified by the emissions and filter-feeding of mussel.From the perspective of ecological effects,the concentrations of dissolved inorganic carbon in culture zone surface water are significantly lower than in control zones (P<0.05).Nitrogen-rich resulted in dissolved organic carbon in an unstable state.Therefore,from the perspective of dissolved organic carbon,the mussel culture was regarded as carbon source.Based on the above,mussel culture has a different effect on water health in maturity and seedling periods,and it needs further discussion about whether the mussel culture has carbon sink function or not.
Keywords:eutrophication  ecological health  dissolved carbon  ecological effect  mussel culture
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