当前的世界环境

Binwa是喜马拉雅邦西部喜马拉雅地区的多年生山溪流。在本研究期间，选择了一种基于完全差异的四个观测位点，即Kharli（S₁），baijnath（s₂），靠近chobin（s_3.）和triveni（s_4.）和水样用于物理化学和生物参数一年（2011年2月21日）。Water temperature, water current, dissolved oxygen, turbidity, T.D.S., electric conductivity, total Hardness, phosphate, and nitrate had played an essential role in determining the variations in planktonic and macroinvertebrate fauna of the stream.Species diversity indices such as Simpson, Shannon and Wiener, and Margalef’s diversity index of macroinvertebrates were worked out for all the observation sites. Based on the comparison of physico-chemical parameters of water samples with different standards prescribed for drinking water, water quality index for four stations calculated. Similarly, EPT taxa (Ephemeroptera, Plecoptera, Trichoptera) measured, and EPT index computed. The water quality of the stream deteriorates downstream from head to mouth due to different types of anthropogenic interferences. The findings revealed that stream has no pollution at S₁，虽然它是来自s的oligotrophic₂TOS._3.和中的中间寡糖在s_4.