What are the terrain areas in North Asia?

North Asia is about 7,000 kilometers long from east to west and 4,000 kilometers wide from north to south, covering an area of 6,543,800 square kilometers. The coastline is nearly 30 thousand kilometers long. The terrain is mostly plateau platforms and mountains. The geographical location of high latitude extreme continental cold and warm climate, the profound influence of glacier Leng Hai, the complete land contour and the mountainous plateau with open terrain to the north make the climate in North Asia have obvious extreme continental cold climate characteristics. This area is rich in natural resources and the traffic is developing rapidly, mainly railways. This area is an important energy and raw material base. On this basis, petrochemical, coal chemical, non-ferrous metal mining and metallurgical industries have also been developed. The iron and steel industry has begun to take shape, and the machinery industry has developed, but it is still very weak. Agriculture is more developed in southern Siberia, with wheat and dairy products and meat animal husbandry as the main sectors. Location and area North Asia includes Siberia and the Russian Far East. It is about 7,000 kilometers long from east to west and 4,000 kilometers wide from north to south, with an area of about130,000 square kilometers. It is the largest natural geographical area in Asia. The northwest border is the continental border between Asia and Europe. The western part of southern Xinjiang is the northern foot of Kazakh Plateau, and the eastern part is bounded by Russia, Mongolia and China. Most of them are located in the north of 50 degrees north latitude, and more than 2 million square kilometers extend into the Arctic Circle. The Arctic Ocean and the Pacific Ocean surround North Asia from the north and east respectively, with a coastline of nearly 30,000 kilometers. The cold Arctic Ocean is covered with ice almost all the year round, which plays a "refrigerator" role in the climate and even the natural landscape of North Asia. Even in summer, the temperature will drop sharply after the north wind hits. Although the warm conditions in the northwest Pacific have improved the climate here, the warmer and wetter airflow from the Pacific can only affect the coastal areas because of the blocking of mountains on the edge of the Far East. At the same time, the Kuril Islands cold current on the east coast and the ice bank in the Sea of Okhotsk have a cooling effect. The western part of North Asia is far away from the Atlantic Ocean, and only the western part of the mountains in western Siberia and southern Siberia can be more affected by the warm and humid air flow in the Atlantic Ocean and the accompanying cyclones. Therefore, East Siberia, east of the Yenisei River basin, is drier and colder. Topography and weather are mostly plateau platforms and mountains, mainly including the Central Siberian Plateau, the Southern Siberian Mountains and the Far East Mountains. There are Urals Mountains in the west of North Asia, Far East Mountains in the east and South Siberia Mountains in the south. The whole terrain decreases northward, which is conducive to the southward invasion and stagnation of ice and marine air masses. There are few plains, mainly including West Siberia Plain, North Siberia Plain and Kolema Plain. The geographical location of extreme continental cold and warm climate in North Asia, the profound influence of glacier Leng Hai, the complete land contour and the mountainous plateau open to the north make the climate in North Asia have obvious extreme continental cold climate characteristics, which are the leading factors for the formation of natural complexes in North Asia. The latitude of North Asia is north, and the heat condition is poor. The total solar radiation in the whole year is mostly below 1 10 kcal/cm2, and the coastal areas of the Arctic Ocean are generally only 60 ~ 70 kcal/cm2. North Asia mainly belongs to polar long cold climate and sub-cold continental climate. Winter in North Asia is mainly controlled by ice air mass, which is long and cold, and usually lasts for more than 7 ~ 8 months. In Leng Yue, the average temperature in 65438+ 10 is almost below -20℃, and even below -30℃ in the eastern and western regions.