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一、地貌特征黄河自陕西潼关进入河南省,西起灵宝县,东至台前县,流经三门峡、洛阳、济源、郑州、焦作、新乡、开封、濮阳等8个省辖市28个县(区),流域面积3.62万km2,分别占黄河流域总面积的5.1%、河南省总面积的21.7%。黄河河道总长711km。黄河过潼关折向东流至河南郑州市桃花峪,落差231m,平均比降6‰。其中,三门峡以上113km为黄土峡谷,较为开阔。三门峡以下至孟津151km,河
I. Landform Features The Yellow River flows into Henan Province from Tongguan in Shaanxi Province, from Lingbao County in the west to Taiwan County in the east and flows through 8 counties and cities of 8 provincial capitals such as Sanmenxia, Luoyang, Jiyuan, Zhengzhou, Jiaozuo, Xinxiang, Kaifeng and Puyang (Area), the basin area of 36200 km2, accounting for 5.1% of the total area of the Yellow River Basin, Henan Province, the total area of 21.7%. The total length of the Yellow River 711km. The Yellow River passes through Tongguan and flows eastward to Taohuayu, Zhengzhou City, Henan Province, with a drop of 231m and an average drop of 6%. Among them, 113 km above the Sanmenxia loess valley, more open. Sanmenxia to Mengjin 151km, river