台风对工厂化虾池生态系中氮磷关系影响的研究

A RESEARCH ON THE TYPHOON'S EFFECT ON THE RELATION BETWEEN NITROGEN AND PHOSPHRUS IN THE INDUSTRIALIZED ECOLOGICAL SYSTEM

利用2003年7月台风发生期间对虾工厂化养成后期3个周日的实测数据,分析研究了该时期水环境中无机氮(DIN)、无机磷(DIP)的含量变化及其与环境因子的关系。结果表明:在该养殖生态系统中,台风气候对DIN,DIP的含量变化影响较大,尢以养成密度较大的养殖池最为明显,物理、生物、化学过程在不同周日均得到了良好体现;但无论养成密度大小,水环境中的N/P比值及浮游植物量均较高,说明该生态系中浮游植物对营养盐含量变化有较宽的适应范围。

This article is based on the data obtained in the final three diel shrimp industrialized cultivation during the Typhoon period in July 2003, the content variations of inorganic nitrogen (DIN) and inorganic phosphorus (DIP) in the culture water and their relation with the environmental factors were investigated. Theresults showed that in the ecological system of the cultivation, typhoons have a great effect on the contents of DIN and DIP. Especially in the dense culture water, the variations in the processes of physics, biology and chemistry in the different days were shown clear. But whether the density was high or not, the ratio of N/P and the amount of the phytoplankton in the culture water were all large, which showed that in this ecological system, there was a wide range in the adaptability of phytoplankton when the contents of nutrient salts varied.