厦门西港网箱养殖区底层水体污染状况分析

Analysis of bottom water pollution in cage-cultured region of Western Xiamen Harbour

本文根据1998年4月至1999年2月的调查资料,研究了厦门西港海域网箱养殖区底层海水的t、DO、pH、COD、Chl a、DIN、DIP的变化规律,结合对其富营养化程度分析,探讨了发生在养殖区底层海水中的有机质积累和降解作用.结果表明,网箱养殖区底层水体有机污染负荷量的增大,是造成养殖水体恶化的关键因素.

Based on the surveyed data of bottom water from cagecultuerd region of Western Xiamen Harbour from April 1998 to February 1999,the variation regularities of the determination values of t,DO,pH,COD,Chla,DIN,DIP and DOC are studied.Combined with the analysis of eutrophication degree,the accumulation and degradation of organic matter from the bottom water of the cultured region are discussed.The results show that the increasing load of organic pollution from the bottom water of the cagecultuered region is a key factor to cause the deterioration of cultuered water.