B) Calculation of water requirement for some selected winter crops in Erbil using four different schemes, namely, Blaney-Criddle, modified Blenney Criddle, Kharufa and Penman monteith. The objective was to simulate all the physical characteristic of natural rainfall as accurately as possible by rainfall simulator during this study and in future. The study encompassed the following trials: A) Characterization of rainfall in Erbil. Comparison of the discriminant analysis and factor analysis helped to identify the most important water quality parameters, as water temperature, DO, EC, COD, CL, Ca, alkalinity, PO4P, and TP, that are most important for seasonal variation and play a significant role in establishment of water quality control strategy.
A parameter that is most important in contributing to water quality variation for one season may not be important for another season. Application of FA revealed that the influence of water quality parameters changes from season to season. Factor analysis and box–whisker plots facilitated to investigate the seasonal variation of water quality and the pattern of pollution sources. The application of discriminant analysis confirmed the classification of the water quality measurements into three seasons: pre-monsoon, monsoon, and post-monsoon affording 93.8% correct classification. The chemometric techniques were applied for evaluation of the seasonal variation of water qualities at 17 stations along a stretch of the Bagmati river of Nepal for 23 water quality parameters measured during 1999–2003.
0 kommentar(er)
