The present study aims to quantify the transfer of sediments and nutrients from an inter-montane agricultural catchment located in lower Himachal Himalayas of north western India. The study is based on long-term water quality data for July to September months for the period 2004 to 2010. The data for this study has been procured from Bhakra Beas Management Board, Sundernagar. The study has revealed a high degree of transfer and variability in sediment and nutrient concentrations, loads and yields, causing pollution downstream. The sediment concentrations have varied from 10 to 8117 mg/l with a variability of 54%. The micro nutrients concentrations have varied from 0.03 to 0.41 mg/l for zinc, 0.13 to 6.64 mg/l for iron and 0.02 to 1.30 mg/l for copper. Among the macro nutrients, highest concentrations have been observed for sulphate (11.81 mg/l) followed by phosphate (0.97 mg/l) and nitrate (0.40 mg/l). The correlation analysis has revealed that sediment and nutrient flux from the catchment are dependent on amount of stream flow. However, the extent of correlations has been, in general, low or non-significant. The findings of this study will have key implications for future sediment and nutrient transfer from agricultural catchments of north western Himalayan region.

本研究旨在量化位于印度西北部喜马al尔山下喜马拉雅山间农业集水区的沉积物和养分的转移。该研究基于2004年至2010年7月至9月的长期水质数据。该研究的数据来自Sundernagar的Bhakra Beas管理委员会。研究表明，沉积物和养分浓度，负荷和单产的高度转移和多变性，导致下游污染。沉积物浓度从10到8117 mg / l不等，变化率为54％。锌的微量营养素浓度范围为0.03至0.41 mg / l，铁的范围为0.13至6.64 mg / l，铜的范围为0.02至1.30 mg / l。在大量营养素中，硫酸盐的浓度最高（11。81 mg / l），然后是磷酸盐（0.97 mg / l）和硝酸盐（0.40 mg / l）。相关分析表明，流域的沉积物和养分通量取决于河流流量。但是，相关程度通常较低或不重要。这项研究的结果将对喜马拉雅西北部地区农业集水区的未来沉积物和养分转移产生重要影响。