廉州湾海域水化学要素含量的分布特征

The Distribution Characteristics of Contents of Hydrochemistry Elements in the Seawater of Lianzhou Bay

关键词:  水化学要素  变化特征  影响因素  海域

Key words:  hydrochemistry elements  changing characteristics  influencing factors  seawater

摘要:

根据1998年1月、4月、8月、10月4个航次的调查资料,分析廉州湾海域水化学要素含量的变化及特点。结果表明,该湾水化学要素含量具有河口区特征,pH值和DO含量为冬季高于夏季,COD含量为夏季高于冬季,NO₃-N、NO₂-N、NH₃-N的含量为春夏季高于秋冬季,PO₄-P、SiO₃-Si含量为夏季高于冬季。各含量变化的主要影响因素均为河流径流及各种污水的注入所致。

Abstract:

Based on the information from the four voyages of investigations in January,April,August and October of 1998,the changing characteristics of contents of the hydrochemistry elements in the seawater of Lianzhou Bay were analyzed.These hydrochemistry elements have a characteristicof estuarine areas.The pH values and DO contents in the winter were higher than that in the summer,while the contents of NO₃-N、NO₂-N、NH₃-N in the spring and the summer were higher than that in the autumn and the winter; the contents of PO₄-P、SiO₃-Si in the summer were higher than that in the winter.The changement of these elements were basically caused by the factors such as the input of river runoff and various kinds of polluted waters.