蘭陽溪水質指標相關性分析

The Correlation Analysis of Water Quality Indexes for the Lanyang River

史健軍(Chien-Chun Shih)

《蘭陽學報》 7期 (2008/06) Pp. 9-16

https://doi.org/10.6665/JLYIT.2008.7.9

摘要

In this paper, water quality monitoring data for the Lanyang River from 2003 to 2007 were obtained from EPA and were calculated for three different water quality indexes (RPI, WQI and WQI5). The comparison of these indexes was made to demonstrate their differences and relationship. Correlation analysis results show that WQI and WQI5 are highly positive correlated (r＞0.85) for all monitoring stations. For RPI with WQI or WQI5, a moderately to highly negative correlation (r= -0.5~ -0.9) was observed. RPI is frequently interfered by nature occurred suspended solid and cause the down grade of the pollution rating. WQI5 is more sensitive to conductivity and a lower rating is occurred to the monitoring station located at estuarine. No phosphate monitoring data is frequently found during WQI calculation and an adjustment is needed. Statistical hypothesistest and ANOVA results shown RPI and WQI were no difference for the stations of the Huludu Bridge, the Lanyang Bridge and the Gamalan Bridge. The WQI5s were no difference for the stations of the Huludu Bridge and the Lanyang Bridge. Further studies are recommended for the existence of these stations.

關鍵字

水質監測 ； 水質指標 ； 變異數分析

並列摘要

In this paper, water quality monitoring data for the Lanyang River from 2003 to 2007 were obtained from EPA and were calculated for three different water quality indexes (RPI, WQI and WQI5). The comparison of these indexes was made to demonstrate their differences and relationship. Correlation analysis results show that WQI and WQI5 are highly positive correlated (r＞0.85) for all monitoring stations. For RPI with WQI or WQI5, a moderately to highly negative correlation (r= -0.5~ -0.9) was observed. RPI is frequently interfered by nature occurred suspended solid and cause the down grade of the pollution rating. WQI5 is more sensitive to conductivity and a lower rating is occurred to the monitoring station located at estuarine. No phosphate monitoring data is frequently found during WQI calculation and an adjustment is needed. Statistical hypothesistest and ANOVA results shown RPI and WQI were no difference for the stations of the Huludu Bridge, the Lanyang Bridge and the Gamalan Bridge. The WQI5s were no difference for the stations of the Huludu Bridge and the Lanyang Bridge. Further studies are recommended for the existence of these stations.

並列關鍵字

Water quality monitoring ； Water quality index ； Analysis of variation

參考文獻

環保署環境全國環境水質監測資訊網

周建成(1990)。台灣河川水質指標之建立(碩士論文)。國立成功大學環境工程研究所。

林金龍(2006)。蘭陽溪及冬山河流域水質之評估與改善研究(碩士論文)。國立臺灣海洋大學環境生物與漁業科學學系。

歐陽嶠暉()。,未出版。