福建沿岸海域溶解氧时空变化及与其它要素的关系

SPATIAL AND TEMPORAL VARIATION OF DISSOLVED OXYGEN ALONG FUJIAN COAST AND THEIR CORRELATION TO OTHER FACTORS

本文根据1984—1985年福建海岸带综合性调查的资料,对本海域溶解氧的时空分布及其变化规律进行了探讨,并与诸影响因素(t,S,σ_1,Chl-a以及营养盐等)进行了相关分析。结果说明本海域溶解氧的时空变化不仅受物理因素所控制,生物、化学作用也有着十分显著的影响,并以相关分析的结果对溶解氧的时空变化特征进行了解释。

This paper describes the features of distribution and seasonal variation of dissolved oxygen,basing on the data from a comprehensive investigation along Fujian Coast from Feb.1984 to Feb.1985,and discusses the Correlations between the dissolved oxygen and t.S and Chl-a.The multiple linear stepwise-regression analysis of DO,O2%and t,S.pH,Alk and nutrients are also discussed.Seasonal data show a maximum of mean seasonal DO concentration occurs in winter and minimum of both DO concentration and O2%in summer,but a maximum of mean seasonal O2%occurs in spring.The results of the correlation analysis show that there are best relationship between the seasonal variation of DO concentration and t and S.though the case is not so in summer and spring.Howevr,there is a best statistical correlation between-AOU and Chl-a concentration in spring and summer.The results of the multiple linear stepwise-regression analysis also show that distribution and seasonal variation of dissolved oxygen are not only controlled by physical factors but also under evident effects from biological and chemical factors.