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首页> 外文期刊>International journal of river basin management >Fractal, predictability index and variability in trends analysis of river-water dynamics
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Fractal, predictability index and variability in trends analysis of river-water dynamics

机译：河水动力学趋势分析中的分形，可预测性指数和变异性

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Statistical modelling, analysis of physico-chemical parameters chemical oxygen demand (COD), biochemical oxygen demand (BOD), dissolved oxygen (DO), water temperature (WT), free ammonia (AMM), total Kjeldahl nitrogen (TKN), total coliform (TC), fecal coliform (FC) and potential of hydrogen (pH) monitored at the Hathnikund barrage (Haryana) sample site of river Yamuna in India have been studied. It has been observed that water-quality parameters such as COD-BOD, AMM-TKN, WT-pH and TC-FC are positively correlated whereas COD-DO, BOD-DO, TKN-FC and DO-WT are negatively correlated. For water-quality parameters such as pH, AMM, TC and FC no seasonal pattern is observed. Parameters such as COD, BOD, TKN, DO and WT follow a six-month seasonal pattern. All the parameters except DO and WT follow a positive trend for monthly and annual variations. BOD, AMM and TKN have anti-persistence behaviour for both monthly and yearly variations. For parameters COD (+27.83%), BOD (+42.36%), AMM (+49.63%), TKN (+22.71%), TC (+141.80%) and FC (+42.89%) the future trend remains positive with high variability. WT ( - 7.47%) follows a negative trend with low variation and DO (- 17.12%) has a negative trend with lofty variation. Using fractal, predictability index and variability in trend analysis, it is concluded that all parameters, except pH and WT, cross the prescribed limits of WHO/EPA and if the same trend should be followed, then in the future the quality of water shall continuously deteriorate and water may not be fit for drinking, agriculture and industrial use.
机译：统计建模，理化参数分析，化学需氧量（COD），生化需氧量（BOD），溶解氧（DO），水温（WT），游离氨（AMM），凯氏定氮（TKN），大肠菌群总数在印度Yamuna河的Hathnikund拦河坝（哈里亚纳邦）采样点监测到的（TC），粪大肠菌群（FC）和氢势（pH）进行了研究。已经观察到，诸如COD-BOD，AMM-TKN，WT-pH和TC-FC的水质参数呈正相关，而COD-DO，BOD-DO，TKN-FC和DO-WT呈负相关。对于水质参数（例如pH，AMM，TC和FC），没有观察到季节性模式。 COD，BOD，TKN，DO和WT等参数遵循六个月的季节性模式。除DO和WT外，所有参数的每月和每年变化都呈正趋势。 BOD，AMM和TKN具有每月和每年变化的抗持久性。对于参数COD（+27.83％），BOD（+42.36％），AMM（+49.63％），TKN（+22.71％），TC（+ 141.80％）和FC（+ 42.89％），未来趋势仍然保持高位变化性。 WT（-7.47％）呈负趋势，变化低，而DO（-17.12％）呈负趋势，变化高。利用趋势分析中的分形，可预测性指数和变异性得出的结论是，除pH和WT外，所有参数均超过WHO / EPA的规定限值，如果应遵循相同趋势，则未来水质将持续恶化，水可能不适合饮用，农业和工业用途。

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