摘要:
借助SPSS统计分析软件,选择来宾红水河珍稀鱼类保护区水质指标中水温、pH、DO、CODMn、NH3-N、NH3、TN、TP、Chl-a进行Pearson相关分析。为水质监测人员和数据审核提供参考,提高数据质量,同时便于通过相关关系的改变及时了解水质的变化。结果表明,Chl-a与环境因子具有较密切的相关关系,其中,Chl-a与TN、TP表现为负相关关系,Chl-a与NH3-N、NH3为显著正相关,相关系数分别为0.30、0.41;Chl-a与水温、pH、DO均存在不同程度的正相关;Chl-a与CODMn呈极显著正相关,相关系数为0.44。N/P变化范围是7.4~166.1,属于磷限制性水域。营养盐与其他环境因子之间也存在某些较稳定的相关关系,其中,TP和pH极显著负相关,相关系数为-0.52;NH3和pH、NH3和DO、NH3-N和DO极显著正相关,相关系数分别为0.51、0.77、0.75。NH3和NH3-N相关系数达到0.72。DO和水温极显著负相关,相关系数为-0.44,和pH极显著正相关,相关系数为0.33,和CODMn呈负相关趋势。
Abstract:
In this paper, SPSS statistical analysis software was used for correlation analysis of water temperature, pH, DO, CODMn, NH3-N, NH3, TN, TP and Chl-a of the rare fish protected area in Laibin section of Hong River, with the aims at provision of references for the water monitoring staff and data assessment, improvement of data quality, and timely understanding of the changes in water quality by variation of the correlation coefficients. The results showed that there were close relationships between Chl-a and the environmental factors. Chl-a and TN and TP were negatively correlated, and Chl-a and NH3-N and NH3 were positively correlated with the correlation coefficient as 0.30 and 0.41 respectively. There were various degrees of positive correlations between Chl-a and water temperature, pH and DO. Correlation between Chl-a and CODMn was significantly positive, with the correlation coefficient as 0.44. N/P was ranged from 7.4 to 166.1, indicating that phosphorus in the water was a limiting factor for eutrophication. There were relatively stable correlations between the nutrients salt and other environmental factors. TP and pH was significantly negatively correlated with the correlation coefficient as -0.52. NH3 and pH, NH3-N and DO, NH3-N and DO were significantly positively correlated, with the correlation coefficients as 0.51, 0.77 and 0.75. The correlation coefficient of NH3 and NH3-N reached to 0.72. DO and water temperature was significantly negatively correlated with the correlation coefficient as -0.44. DO and pH was significantly positively correlated with the correlation coefficient as 0.33. However, DO and CODMntended to be negatively correlated.
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