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Worsening pollution caused due to long-term high-density farming, shellfish metabolites released into the environment, manure and other organic matter content of the water body nitrogen, phosphorus, and chemical oxygen demand increased, the original water from chemical equilibrium corresponding change , often to potentially harmful organisms created favorable breeding conditions, brought heavy pressure to the farming environment. Particulate shellfish metabolites has not only changed the composition of the sediments affect benthic biodiversity and biogeochemical cycles, and culture zones caused by self-pollution; mariculture zones of sea pollution problems have become increasingly prominent. Response to these problems, the paper in May 2010, August, November and January 2011 on the site of Sungo Bay waters survey from the metabolite excretion, nitrogen, phosphorus, carbon balance of payments, metabolites The four aspects of the marine environment impact assessment and metabolites on the depositional environment impact assessment raft culture Sanggou Bay area environmental quality in a more systematic analysis and evaluation, raft culture Sanggou Bay C. farreri The environmental impact assessment methods, the study constraints of the environment and ecological problems of the mariculture zone environment and the quality of aquaculture products, provide technical support. The main research work are as follows: 1. Scallops metabolite excretion studies using the ecological simulation experiments and on-site monitoring method of combining to study of C. farreri soluble and particulate metabolites excretion, the establishment of the dynamic estimation model for excretion, actual measurement results and according to the on-site verification and correction. The results showed that the excretion of scallops by the specifications, the season, the greater the specifications, the greater the amount of excretion; August 4 month excretion maximum. For the proportion of dissolved and particulate state, different specifications of the scallop Chlamys slightly different. C. farreri carbon, nitrogen and phosphorus excretion as the temperature increases overall upward trend. Coupled season, specifications factors of C. farreri excretion breeding cycle dynamic equation: carbon is y = 56.70 0.21x 7.18 x 10 -3 x 2 6.11 × 10 -6x 3 -7.68 × 10 -8 , x ; nitrogen y = 5.57-1.43 × 10 -2 x 7.29 × 10 -4 x 2 -1.88 × 10 -6 x 3 ; phosphorus for y 20.61 0.70x-1.97 × 10 -2 * X 2 2.25 × 10 -4, x , 3 -5.85 × 10 -7 x 4 . 2 scallops nitrogen, phosphorus, carbon balance of payments situation according to the principle of mass balance, through the simulated experiment, the raft culture scallop shellfish tissues, soluble metabolites, particulate metabolites, total nitrogen, total phosphorus, organic carbon Determination of shellfish farming nitrogen, phosphorus, carbon material balance equation, estimates of the scallops nitrogen, phosphorus, carbon balance of payments situation, to explore the mechanism of contamination of shellfish farming. The results show that the: scallops organisms absorb nitrogen, phosphorus, organic carbon content of solid excretion of nitrogen, phosphorus, organic carbon content, shellfish farming in general be able to effectively absorb the environment is much higher than nitrogen, phosphorus, organic carbon and other nutritional elements. 3 scallops metabolites of the marine environment impact assessment by monitoring shellfish farming area seawater chemistry parameters (temperature, salinity, pH, DO, COD, inorganic nitrogen, phosphate, oil, Hg, As), nutritious index of evaluation index of organic pollution and water quality index the culture zones marine environment quality evaluation to assess the impact of shellfish metabolites on the marine environment. The results show that: in May the water quality is excessive eutrophication, is a serious pollution. Other months slightly polluted water quality. Scallops metabolites depositional environment impact assessment draws Ervik Norwegian MOM (Modelling-On-growing fish farms-Monitoring) system, through the comprehensive evaluation of a subset of biological parameters, chemical parameters and sensory indicators 3 evaluation of the shallow water raft the quality of shellfish farming area depositional environment. The results showed that: Chlamys Sanggou Bay scallops raft culture depositional environment maintain the quality in the two states.
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