Noreste (Vietnam)

La región Noreste comprende las provincias al noreste de Hanói , cerca de la frontera con China. Tiene una población de aproximadamente diez millones de habitantes.

Los límites geográficos al oeste del noreste no están claros, principalmente debido a la falta de consenso sobre la geografía de Vietnam respecto a si el límite entre el noroeste y el noreste es el río Rojo o el Hoàng Liên Sơn . El noreste limita al norte y al este con la frontera entre Vietnam y China, mientras que el sureste limita con el golfo de Tonkín . El límite sur está formado por la cordillera de Tam Đảo y el delta del río Rojo .

También es montañosa en la zona central, incluyendo macizos y montañas de piedra caliza .

El lado occidental , delimitado por el valle del río Rojo y la fuente del río Chảy , se compone de una meseta de granito , pizarra y piedra caliza. En esencia, este es el borde de la meseta de Yunnan . Aquí se concentran las altas montañas del noreste, como Tây Côn Lĩnh y Kiêu Liêu Ti .

The northern part junction with Vietnam-China border are the plateau (highland) turns from west to east are: Bắc Hà, Quản Bạ, Đồng Văn. Two first plateau has an average elevation of 1000-1200m. Đồng Văn Plateau is 1600m. Rivers and streams flowing through the plateau created long and deep canyons. There are also some small plains, like Thất Khê, Lạng Sơn, Lộc Bình, and Cao Bằng.

To the east, from the Gâm River's middle into the sea, which is lower than many mountains arc turned eastward turn from east to west is the Gâm River's anticline, Ngân Sơn-Yên Lạc Bow, Bắc Sơn Massif, Đông Triều Mountain range. Mountains rising above the sea form the famous scenery of Hạ Long. The arc of these mountains are mostly covered tail at Tam Đảo.

Southwest, from Phú Thọ, southern Tuyên Quang, southern Yên Bái and Thái Nguyên, lower toward the plain. It is called as the "midlands". The height of this section is about 100–150 m.

The Northeast has many rivers flow through, including the major river of the Red, Chảy, Lô, Gâm (the Red rivers system), Cầu, Thương, Lục Nam (in Thái Bình river system), Bằng, Bắc Giang, Kỳ Cùng...

Northeast's sea region has many large and small islands, nearly 2/3 the number of Vietnam's sea islands (including the Hoàng Sa and Trường Sa).