Environmental Biology Laboratory, Department of Zoology, Patna University, Patna, 800 005, India.
Environ Monit Assess. 2011 Mar;174(1-4):401-15. doi: 10.1007/s10661-010-1465-9. Epub 2010 May 5.
The study explains water quality of three important tributaries of the Ganga River in the middle Gangetic plains in India. Seasonal changes in the water quality of the studied rivers: Gandak, Ghaghra, and Sone were observed. During monsoon, several water quality parameters show considerable changes due to increased runoff from the catchments and other seasonal factors. Multivariate discriminant analysis delineated a few parameters responsible for temporal variation in water quality. Seasonal variation in water quality of the Gandak River was rendered by seven parameters-turbidity, sulfate, pH, phosphate, water temperature, total alkalinity, and sodium, while total alkalinity and water temperature were responsible for seasonal discrimination in water quality of Ghaghra River. Water temperature, turbidity, total dissolved solids, total suspended solids, calcium, and phosphate were important for seasonal discrimination in water quality of Sone River. The seasonal changes in water quality of the rivers were due to seasonal effects and catchment characteristics. The discriminant functions classified most of the cases correctly.
本研究解释了印度恒河中游平原三条重要支流的水质情况。对所研究的甘达克河、戈格拉河和苏纳河的水质季节性变化进行了观察。在季风期间，由于集水区径流量增加和其他季节性因素，几个水质参数发生了相当大的变化。多元判别分析划定了几个参数，这些参数负责水质的时间变化。甘达克河的水质季节性变化由七个参数表示——浊度、硫酸盐、pH 值、磷酸盐、水温和总碱度以及钠，而总碱度和水温和水质的季节性差异有关。水温、浊度、总溶解固体、总悬浮固体、钙和磷酸盐是苏纳河水质季节性差异的重要因素。河流水质的季节性变化是由于季节性影响和集水区特征造成的。判别函数正确地对大多数情况进行了分类。
