What are the three rivers in China? What are the three rivers in China?

It refers to the low-lying flat plain formed at the confluence of the Heilongjiang, Songhua and Ussuri rivers due to long-term tectonic subsidence and sediment accumulation of the three rivers. The Wanda Mountains in the middle divide the plain into two parts: the northern part is the swampy low plain, with an area of more than 40,000 square kilometers, that is, the Sanjiang Plain or Hejiang Plain in the narrow sense; In the south, there is an alluvial lake swampy plain formed by the Ussuri River and its tributaries and Xingkai Lake, with an area of 8,800 square kilometers, also known as the Muling-Xingkai Plain.

The Hejiang Plain is surrounded by mountains on three sides, the west is the Qinghei Mountain, the branch vein of the Xiaoxing'an Mountains, the south is the watershed of the branch of the Wanda Mountain, and the east is the main vein of the Wanda Mountain, Nadan Hada Ridge.

The vast and low landform of the Sanjiang Plain, the cold and humid climate of summer and autumn precipitation, the slow runoff, the rivers with sudden flood peaks, and the clayey heavy soil with seasonal freeze-thaw have promoted the long-term overhumidity and excessive water accumulation on the surface, forming a large area of swampy water body and swampy vegetation and soil, constituting a unique swamp landscape. With an area of about 2.4 million hectares, it is the largest swamp distribution area in China. Wet and swamp plants mainly include microphylla, marsh willow, moss and reed.

Among them, mossy swamps are the most widely distributed, accounting for about 85% of the total area of swamps, followed by reed swamps. The main soil types are black soil, white clay soil, meadow soil, swamp soil, etc., and meadow soil and swamp soil are the most widely distributed. The Sanjiang Plain is known as the "Great Northern Wilderness", and before large-scale reclamation in the 50s, meadows and swamps were boundless, and there were also patches of forests and wild animals.

After reclamation, many large-scale state-owned farms were built, and the "Great Northern Wilderness" has become the "Great Northern Warehouse" and has become an important commercial grain base of the country. At the same time, the ecological balance of the region has been damaged to a certain extent, the climatic conditions have deteriorated, the early flood disasters have increased, the wind damage has increased, the soil erosion has been serious, and the rare animals and plants have decreased. In the future, it is necessary to make rational use of natural resources, promote the all-round development of agriculture, forestry, animal husbandry, sideline products, and fisheries, give priority to preventing flooding, treat both floods and droughts, do a good job in the construction of farmland and water conservancy, and establish nature reserves for marshy landscapes and rare birds and precious fish.

Heilongjiang, Songhua River, Ussuri River.

1. Three rivers in the southwest: the Yangtze River, the Yellow River and the Lancang River, which are famous at home and abroad for the "source of the three rivers";

Located in the western part of China, the hinterland of the Qinghai-Tibet Plateau and the southern part of Qinghai Province, the source of the Sanjiangyuan region is located in the western part of China, the roof of the world, the hinterland of the Qinghai-Tibet Plateau, and the southern part of Qinghai Province, with an average altitude of 3,500 4,800 meters.

Its geographical location is 31°39 north latitude'～36°12', longitude 89°45 E'～102°23'The administrative area involves 16 counties including Yushu, Guoluo, Hainan and Huangnan Tibetan Autonomous Prefectures and Tanggula Township in Golmud City, with a total area of 10,000 kilos, accounting for about 43% of the total area of Qinghai Province and 97% of the total area of 16 counties and 1 township. At present, it has a population of 10,000 people, of which more than 90% are Tibetans, and there are other ethnic groups such as Han, Hui, Salar and Mongolian.

2. Three rivers in Northeast China: Heilongjiang, Ussuri River and Songhua River, known to the world because of the "Three Rivers Plain".

The Sanjiang Plain, also known as the Sanjiang Lowland, is the largest swamp distribution area in China in the northeastern part of the Northeast Plain. The "three rivers" of the Sanjiang Plain are the Heilongjiang, Ussuri and Songhua rivers, and the three great rivers are mighty and mighty, confluence and alluvial to form this low-level fertile land.

The region is rich in water resources, with a total amount of 100 million cubic meters, a per capita arable land area roughly five times the national average, and 2.52 million hectares of mixed coniferous and broad-leaved forests in the low mountains and hilly areas.

Zhen Sanjiang, China's famous Northeast bandit leader. Three rivers, the Yellow River, the Yangtze River, and the Heilongjiang River.

Three rivers refer to: China's three major water systems: the Yangtze River, the Yellow River, and the Lancang River.

The "three rivers" of the Sanjiang Plain refer to the Songhua River, the Heilongjiang River, and the Ussuri River.

The "three rivers" of the source of the three rivers refer to the Yangtze River, the Yellow River, and the Lancang River.

Three rivers flow in parallel: "Nu River, Lancang River, Jinsha River".

China's three rivers refer to the Yangtze River, the Yellow River, and the Lancang River. The source of the Yangtze River, the Yellow River and the Lancang River is the source area of the three rivers, located in the hinterland of the Qinghai-Tibet Plateau and the southern part of Qinghai Province, and is also the headwater catchment area of the Yangtze River, the Yellow River and the Lancang River, with a total area of 10,000 square kilometers, accounting for about the total area of Qinghai Province, and is known as the Chinese Water Tower.

Located in the southern part of Qinghai Province in China, the Sanjiangyuan region is the hinterland of the Qinghai-Tibet Plateau, the roof of the world, and is the headwaters of the Yangtze River, the Yellow River and the Lancang River, which are the world-famous rivers that gave birth to the Chinese nation and the long history of civilization in the Indochina Peninsula. The source of the three rivers is the highest natural wetland in China, with an average altitude of more than 4,000 meters. Known as China's water tower, the source of the Three Rivers is home to 25% of the Yangtze River, 49% of the Yellow River and 15% of the Lancang River.

The three rivers refer to the Jinsha River, the Lancang River and the Nu River.

The Jinsha, Lancang, and Nu rivers, as well as the Yaruo River further east, are all rivers that originate from the Tibetan Plateau and flow very well.

Among them, the Lancang River and the Nu River flow into Southeast Asian countries from north to south, while the Jinsha River flows eastward as the upper reaches of the Yangtze River. To take the Sichuan-Tibet line, it is necessary to cross these rivers. Sometimes it's along the river, sometimes it's through it, and often it's a mountain on one side and a rapids on the other.

When the Jinsha River reaches Batang County, it is gentle, and the river is also very wide, while its upper reaches are rolling in.

From the 760-meter dry and hot valley of the Nujiang River to the 6,740-meter Kawagebo Peak, the three rivers are connected to the scenic area, bringing together the wonders and wonders of alpine valleys, snow-peaked glaciers, plateau wetlands, forests and meadows, and precious plants.

The three rivers refer to the Yangtze River, the Yellow River, and the Lancang River. The Yangtze River originates from the southwest side of the main peak of Tanggula Mountain, Geladandong Snow Mountain; The Yellow River originates in the northeastern part of Tanggula Mountain, Qinghai Province, China, flows through Myanmar, Laos, Thailand, Cambodia, and flows into the South China Sea in Saigon, Vietnam, and is the largest international river in Southeast Asia. The total length of the main stream is 4,880 kilometers, and the river area is 810,000 square kilometers.

Characteristics of the Yangtze River, the Yellow River and the Lancang RiverThe headwaters of the Yangtze River, the Yellow River and the Lancang River are all above 4,000 meters above sea level, surrounded by towering snow peaks, ice towers, and many snow-capped mountains with an altitude of 5,000 to 6,000 meters. However, in the middle of summer, the mountains are full of green grass, flowers, cattle and sheep, and tents.

The abundant sunshine, the dotted mountain lakes, the criss-crossing swamp streams and the leisurely and romantic atmosphere of the nomadic life of the Tibetan herdsmen who live in pursuit of water and grass constitute the unique natural scenery and charming scenery of the source, which is full of natural interest in harmony and intimacy with nature. In particular, the Yangtze River and Lancang River basins are full of mountains and valleys, lush forests and colorful ethnic customs, which make people forget to return.

The Sanjiang Plain refers to the Heilongjiang, Ussuri and Songhua rivers. The Sanjiang Plain is mainly divided into two parts, north and south, and the north of the mountain is a swampy low plain formed by the confluence of the Songhua River, Heilongjiang River and Ussuri River, that is, the Sanjiang Plain in the narrow sense. To the south of the mountain is the alluvial-lacustrine swamp low plain formed by the Ussuri River and its tributaries and Xingkai Lake, that is, the Muling-Xingkai Plain.

The Sanjiang Plain is located in the eastern part of Heilongjiang Province, in the southwest of the Sanjiang Basin, from Heilongjiang in the north, to Xingkai Lake in the south, to the Xiaoxing'an Mountains in the west, and to the Ussuri River in the east.

The Sanjiang Plain is recognized as one of the three most fertile black soils in the world, the core area of the Northeast Black Soil Plain, with an area of more than 100,000 mu of cultivated land, an average content of 3% and 5% of soil organic matter, and a high content of up to 10%, which is 5 6 times the national average.

The Sanjiang Plain is an important agricultural product producing area with relative advantages in production conditions and production costs, and it is necessary to focus on the development of the production of green rice and other high-quality agricultural products, optimize the layout of the main grain functional areas and important agricultural product protection areas, optimize the variety structure and optimize the management structure, improve the comprehensive grain production capacity, and ensure the excellent quality of agricultural products.

The Sanjiang Plain is located in Heilongjiang Province.

The Sanjiang Plain, that is, the northeast part of the Northeast Plain, "Sanjiang" refers to the Heilongjiang, Ussuri and Songhua rivers, where these three great rivers flow mightily and mightily, alluvial formation of this flat fertile soil.

The Sanjiang Plain is rich in water resources, with a total amount of 100 million cubic meters, its southwest is the largest swamp distribution area in China, the per capita cultivated land area is roughly equivalent to 5 times the national average, and there are 2.52 million hectares of coniferous and broad-leaved mixed forests in the low mountains and hilly areas, which are known as the "Great Northern Wilderness" in the past and the "Great Northern Warehouse" today.

Climate

The Sanjiang Plain is a temperate humid and semi-humid continental monsoon climate, with 2400 2500 hours of sunshine throughout the year, an average temperature of 21 18 in January, an average temperature of 21 22 in July, a frost-free period of 120 140 days, and an active accumulated temperature of 2 300 2 500 above 10. The freezing period is up to 7-8 months, and the maximum freezing depth is meters.

The annual precipitation is 500 650 mm, 75 85% is concentrated in June 10. Although the latitude is high, the average annual temperature is 1 4, but the summer is warm, the average temperature of the hottest month is above 22, and the rain and heat are in the same season, which is suitable for the growth of agriculture (especially high-quality rice and high-oil soybeans).

The above content reference: Encyclopedia - Sanjiang Plain.