论文部分内容阅读
本文调查研究了海南三亚近岸海域水化学要素的浓度和分布，结果表明：（１）表层ＤＯ、ＮＯ－２、ＮＯ－３、ＮＨ＋４、ＰＯ３－４和ＣＯＤ的平均浓度分别为４１１．９、０．０５、０．４７、１．７９、０．１６μｍｏｌ／ｄｍ３和１．３１ｍｇ／Ｌ。（２）河流输入对沿岸海域水化学要素的影响主要集中于ＮＨ＋４和ＣＯＤ，对ＰＯ３－４和ＮＯ－３的浓度影响不明显，海域总体为一贫营养盐区域。采用主成分分析表明控制水化学要素的主要因子是河流的输入和由此导致了的生物旺发。
The results showed that: (1) The average concentrations of DO, NO-2, NO-3, NH + 4, PO 3 -4 and COD in the surface waters of Sanya coastal area were 411.9, 0.05, 0.47, 1.79, 0.16 μmol / dm3 and 1.31 mg / L. (2) The impact of river input on chemical elements of coastal waters mainly concentrates on NH + 4 and COD, but has no obvious effect on the concentrations of PO3-4 and NO-3. The sea area is generally a lean nutrient area. Principal component analysis shows that the main factors controlling the chemical elements of water are the input of rivers and the resulting biological surge.