Study On Environment Factors Affecting Outbreaks Of Red Tide In Haizhou Bay Coastal Waters

The study through the Lianyungang Haizhou bays red tide monitoring area establishment 6 stations positions measuring point monitor data carries on the analysis in 2003 to 2007, As well as investigation and research which to the Haizhou sea area hydrology, the water quality and the biological environment factor carries on, Elaborated the Haizhou bays red tide forms with environment factor of the meteorology, the hydrology, the water quality and the biology reciprocity. The result indicated as follows aspects: (1) The sea water eutrophication is the material base and the most important condition which the red tide occurs. Recently several years the Industry and agriculture rapid development in Lianyungang, Includes the massive organic matter, the heavy metal ion in the city industrial waste and the sanitary sewage is massively disperse into the sea, As well as the main riverway of the river bank Shuhe River area Xin Shuhe River enters the sea from my city, has brought the massive pollutant, all had the possibility to cause eutrophication in the Haizhou bays; By the aquaculrure industry large-scale development in Haizhou bays, In particular of the pond cultivation, the crib cultivation, the factorization fish high density cultivation, As well as the massive grows seedlings of the field by the coast, which has the massive sewage to disperse into the sea every day, These have the massive remnant baits, in the excrement water includes the ammonia nitrogen, the urea, the uric acid and other forms contains the nitrogen compound, Sped up the sea water eutrophication, constituted the sea water cultivation own pollution;(2The geography characteristic, the hydrology, the meteorological condition of the Haizhou bays are playing the vital role in the red tide occurrence process, The Haizhou bays, for the model meniscus bay, artificially fills in the sea bridge-building (west main dike is divine land first dam) the construction in addition, The room partition Lianyungang channel tidal current east-bound west natural state, has formed a half seal the harbor, causes the sea water exchange and the renewal ability greatly weakens, the water environment quality unceasingly worsens of the harbor. (3) The red tide biology existence is the prerequisite which the red tide occurs, the Lianyungang Haizhou red tide biology type are more, these red tide biology constituted the latency which this waters red tide occurs, once the condition is suitable, inevitably can explode the red tide.Through the above factors analysis and the synthetic study, aimed at the purpose of the reason and the rule which discovers the red tide to form, has the goal to have carries on the monitor with emphasis, grasps the first red tide monitoring data, and according to monitors the data the change at the right moment to the society, the coastal correlation issues the red tide early warning forecast with the sea unit, thus maximum limit reduces the loss which the red tide creates.