Which three provinces do the three northeastern provinces refer to?

The three northeastern provinces are Heilongjiang Province, Jilin Province and Liaoning Province.

The three northeastern provinces are Heilongjiang Province, Jilin Province and Liaoning Province.

The three northeastern provinces, also known as the "three northeastern provinces" (two different concepts from the northeast region), are three provincial-level administrative regions in the northeast region. The three northeastern provinces are divided into Heilongjiang Province, Jilin Province and Liaoning Province. Topographic distribution pattern: the pattern of mountains surrounded by water is very obvious, and it is known as "Baishuibulake Mountain".

The three northeastern provinces are called "industrial cradles" of new China. Major industrial projects such as steel, energy, chemicals, heavy machinery, automobiles, shipbuilding, airplanes, and military industry. The foundation of China's industrialization has been initially laid in the three northeastern provinces.

The three northeastern provinces have initially formed an all-round and multi-level opening-up pattern with Harbin as the leader, Heihe, Suifenhe, Hunchun and Sino-Russian border trade zones as the windows, and the frontiers along the border and along the line.

Geographical environment of three northeastern provinces:

The three northeastern provinces are dominated by plains and mountains? . Changbai Mountain and Daxing 'anling Mountains are important natural barriers of northeast ecosystem. Sanjiang Plain (easternmost part), Songnen Plain (middle part) and Liaohe Plain (southernmost part) have fertile soil and deep soil layers; Major rivers such as Heilongjiang, Wusuli River, Songhua River, Liaohe River and Yalu River originate here and have great economic and ecological value.

The three northeastern provinces generally belong to the temperate monsoon climate, but due to the high latitude in some areas, the winter is cold and long, the summer is warm and short, the winter snows, the evaporation is small, the climate is humid, and the lowlands are swampy (cold and wet). Warm zone and dry-wet zone: most of them are in the middle temperate zone, and a few are in the cold temperate zone and warm temperate zone, humid and semi-humid zone.