及与其他因素相关性的初步研究

Distribution characteristics of the surface dissolved oxygen in the winter and preliminary analysis on the correlation with other factors in Luoyuan Bay

摘要: 根据2010-2012年冬季罗源湾表层水体的调查数据，对DO的分布特征和相关因素进行初步研究。结果表明，DO的含量变化幅度不大，分布呈现为由北向南逐渐升高的趋势。采用Pearson相关系数来衡量数据之间的相关性，结果表明罗源湾冬季表层水体DO和水温呈中等程度负相关；当pH较低时，DO随着pH的上升而上升，而当pH达到一定浓度后，DO随着pH的升高而降低。湾内水域氮磷和溶解氧主要呈负相关关系，湾口至岗屿氮磷和DO呈正相关关系。

Abstract: According to the survey data in Luoyuan Bay on 2010-2012 winter,the content of DO changes little,and distribution showed increasing trend from north to south. The paper used Pearson correlation coefficient to measure the correlation between the data,the results showed that surface water temperature in winter was negatively related to DO; when pH was low,DO increased along with pH. When pH reached a certain concentration,DO decreased with pH increased. There was inverse correlation between DO and nitrogen and phosphorus in Luoyuan Bay,but a positive correlation was found between DO and nitrogen and phosphorus in bay mouth to Gangyu.