Physical map of Henan
Physically Henan has a diverse landscape with floodplains in the east and mountains in the west. Much of the province forms part the densely populated North China Plain, an area known as the "breadbasket of China". The Taihang Mountains intrude partially into Henan's northwestern borders from Shanxi, forming the eastern edge of Loess Plateau. To the west the Xionger and Funiu Mountains form an extensive network of mountain ranges and plateaus, supporting one of the few remaining temperate deciduous forests which once covered all of Henan. The renowned Mount Song and its Shaolin Temple is located in the far east of the region, near the capital city Zhengzhou. To the far south, the Dabie Mountains divides Hubei from Henan. The Nanyang Basin, separated from North China Plain by these mountains, is another important agricultural and population center, with culture and history distinct from the rest of Henan and closer to that of Hubei's. Unlike the rest of northern China, desertification is not a problem in Henan, though sandstorms are common in cities near the Yellow River due to the large amount of sand present in the river. At 2413.8 meters above sea level, the highest point in Henan province is Laoyachanao.
The Yellow River passes through central Henan. It enters from the northwest, via the Sanmenxia Reservoir. After it passes Luoyang, the mountains gave way to plains. Excessive amount of sediments are formed due to the silt it picks up from the Loess Plateau, raising the riverbed and causing frequent floods which shaped the habitat of the region. More recently however, construction of dams and levees, as well as the depletion of water resources have ended the floods. The Huai River in southern Henan is another important river, and has been recognized as part of the boundary dividing northern and southern Chinese climate and culture.