摘要：The present paper deals with the status of river water of sone at three places namely Babura (S ), 1 Koelwar (S ) and Bahiara (S ) in Bhojpur area in terms of Saprobic Index and Sequential Diversity Index (SQI). 2 3 This system of indexing water quality has long been used traditionally in water management in Europe. The macro-invertebrate benthic fauna exhibit a huge range of diversity in river-bed and are highly sensitive to the changes in water quality. They have been extensively used to monitor the water quality in rivers and can complement physico-chemical surveys. The domestic discharges from the point sources and agricultural run-off from non-point sources contains both organic and inorganic toxic components. Thus, by reviewing the saprobic score level and Sequential Diversity score level, reliable management measures can be adopted to maintain the water quality and bio-diversity of the river at these places.
关键词：bod (biological oxygen demand);saprobic index;sequential diversity score;benthic fauna;biodiversity index
