【摘要】 通过对神农架林区境内四大水系主要河流的河谷形态、水位、流速、降水量、径流量、水质等方面的测量与统计,分析林区四大水系主要河流的水文特征.研究表明:神农架林区境内河流属于高山河流,河流下切强烈,多呈"V"字型狭谷,河宽一般3～10m,河流河谷具有明显幼年期特征.采用单因子指数法分析评价了35条代表性河流水质,以Ⅲ、Ⅳ类水质为主,分别占总调查河流的29%和43%,Ⅰ、Ⅱ类水质分别占调查河流的3%和11%.各河流水质受单一因子影响十分明显.总体来看,林区河流多数河段受人类活动影响,不同程度地受到了生活污水、工业废水的污染.更多还原

【Abstract】 The hydrological characteristics of four main rivers in Shennongjia forest region were elucidated through several aspects including valley form,water level,velocity,precipitation,run-off,and water quality.The results showed that the rivers within Shennongjia forest region were of mountain rivers,which incise intensely and always present valleys of "V" form.The river width ranges from 3 to 10 m.The valleys had clear characteristics of infancy.Water quality of 35 typical rivers was also investigated using single factor index.The Ⅲ and Ⅳ level of water quality were the most common,accounting for 29% and 43% of all rivers studied,respectively.In contrast,only 3% and 11% of the rivers were of quality level Ⅰ and Ⅱ.The water quality was heavily affected by single factors.Overall,most river segments in the forest region were largely affected by human activities,such as domestic sewage and industrial waste.更多还原