Lena River Delta, the top ten deltas in the world.

In fact, the delta is what people call the estuary impact plain, mainly because the sediment in the river impacts the estuary, slowly forming a wetland and then becoming a delta plain. There are many big deltas in the world. Then, let's follow the urban culture to understand the Lena River Delta, the top ten deltas in the world.

Lena river delta

The Lena River Delta, the largest delta in Russia, covers an area of 30,000 square kilometers and flows into the stormy Laptev Sea in the Arctic Circle. It is also the largest permafrost delta in the world. However, with the continuous erosion of rivers, the area of the delta is still expanding and the territory of Russia is also expanding.

The Lena River originates from Mount Baikal at an altitude of1640m south of the central Siberian Plateau, only 20km away from Lake Baikal. First, it flows to the northeast, where the Kiringa River and the Viking River join it. After joining the Mahe River in aulick, it crossed Yakutsk, the largest city, and entered the lowlands. Then the river turns to the north and flows into the Ardan River on the right. Due to the blocking of Yangshak Mountain, the river was forced to take the northwest route, then absorbed the most important left branch, the Veliuy River, and finally flowed northward into the Laptev Sea on the edge of the Arctic Ocean, forming a delta with an area of 18000 square kilometers in the southwest of Novosibirsk Islands. The river divides into seven tributaries there, and the most important one is the easternmost Biloff estuary.

The Lena River basin covers an area of 2.49 million square kilometers and its source is Lake Baikal, the largest lake in the world. It starts from the source of the Baikal Mountains, meanders through plateaus and mountains, passes through the coniferous forest belt of the Siberian Plain, enters the swamp lowlands and permafrost zones of the Saha countries, freely travels through the vast areas of Russia, and finally flows into the stormy Laptev Sea in the Arctic Circle after 4,350 kilometers.

The Lena River brings 6.5438+0.2 million tons of sediment and about 4.65438+0.0 million tons of dissolved substances every year, thus forming the largest delta in Russia-the Lena River Delta, covering an area of 32,000 square kilometers. Today, the area of the delta is still expanding, and the territory of Russia is also expanding.

The coniferous forest belt around the Lena River is very cold in winter, which means that mammals and birds living in the Lena River Delta all the year round need special adaptability to cope with sub-zero temperatures. Birds such as Arctic goldfinches and Siberian tits have very thick feathers. When the weather becomes very cold, they will curl up into a ball to protect their energy. Mammals such as red fox, gray wolf, weasel, mink, mink and sable all have very soft and thick fur. Sables have very fine fur, and these animals are often unfortunately hunted for their fur. Other animals, such as wolf pounds, have learned to live in places where they can keep warm air under snow. They can continue to eat small plants and insects that can grow in winter months all winter.