Which is the largest lake in the world? The largest lake in the world

The largest lake in the world is the Caspian Sea.

Although the Caspian Sea is called "sea", it is actually a lake. It is surrounded by land on all sides, does not directly connect with the sea, and is geographically a lake. The Caspian Sea is bordered by Iran to the south and Russia, Turkmenistan, Kazakhstan, Azerbaijan and other countries to the north, west and east.

One of the reasons why the Caspian Sea is called "sea" is because it is much larger than an ordinary lake. It is about 1,200 kilometers long from north to south, more than 320 kilometers wide from east to west, and the shoreline is about 7,000 kilometers long, covering an area of 10,000 square kilometers, which is almost the size of the whole of Japan. It is the largest lake in the world, 120,000 square kilometers more than the total area of the Great Lakes in North America, and is the only lake in the world that is more than 1,000 kilometers long.

The maximum depth is at 1025 meters, which is much deeper than many seas. The second reason is that the water is salty, similar to the sea, and the creatures living in it are similar to those in the ocean. The climate here is arid, the lake water is evaporated a lot, and the lake level is gradually decreasing.

In 1930, the lake was 10,000 square kilometers, but by 1957, it had shrunk to 10,000 square kilometers. As the lake shrinks, so does the salinity of the lake, which is as high as 3 in the southern part of the Caspian Sea.

The Caspian Sea region is rich in oil and natural gas resources, and Baku on the west coast and the Alborz Mountains on the south coast are important oil-producing regions. The bottom of the lake is also rich in oil, as well as a large number of chemical raw materials such as miscanthus salt, and there are many fish and shrimp, and sturgeon is a famous local specialty.

1. Caspian Sea (Central Asia):

Although it is called the sea, it is not the sea, it is the largest lake, and it is also the largest saltwater lake, the Caspian Sea is the world's largest inland lake, located in the vast and flat western part of Central Asia and the southeastern tip of Europe, and the Caucasus Mountains in the west. The entire sea area is long and narrow, about 1,200 kilometers long from north to south, and 320 kilometers wide from east to west. With an area of about 386,400 square kilometers, it is more than twice the size of the five largest freshwater lakes in North America combined.

The shoreline of the Caspian Lake is 7,000 km long. More than 130 rivers flow into the Caspian Sea, of which the Volga, Ural and Terek rivers flow from the north, and three rivers account for 88% of the total water inflow. There are as many as 50 islands in the Caspian Sea, but most of them are small.

The basin is generally divided into three parts: northern, central and southern. The shallowest is the flat sedimentary plain in the north, with an average depth of 4 to 6 meters. The central part is an irregular basin with a steep western slope and a gentle eastern slope with a depth of about 170 to 788 meters.

The southern depression has a maximum depth of 1,024 meters, an average depth of 184 meters in the entire Caspian Sea, and a lake water volume of 10,000 cubic kilometers. The annual evaporation of the sea surface is 1000 mm. The area and depth of the Caspian Sea have changed several times over the centuries.

The Caspian Sea provides excellent conditions for water transportation to the coastal countries, and there are many ports along the coast, some of which are connected by rail, and trains can go directly to the ship and ferry to the other side.

More than 10,000 years ago, the Caspian Sea was connected to the Black Sea and the Mediterranean Sea, and the sea water communicated with each other. Later, after the movement of the earth's crust, the topography changed significantly, and the rise of the Caucasus Mountains and the Erbul Mountains separated the Caspian Sea from the sea, thus forming the current inland lake. The Caspian Sea is a saltwater lake with an average salinity of 11 to 13 parts per thousand.

The Caspian Sea is rich in fish, and fishing is an important occupation for the local population. Due to the improper development of industry, the Caspian Sea is seriously polluted, resulting in the decline of fish stocks in the Caspian Sea year by year. Protecting the ecological environment of the Caspian Sea is an urgent issue to be solved.

Caspian Sea (Central Asia): It is the largest lake and at the same time the largest saltwater lake.

The Caspian Sea is the world's largest inland lake, located in the vast and flat western part of Central Asia and the southeastern tip of Europe, with the Caucasus Mountains to the west.

It seems to be worth a lot!

The largest lake in the world is the Caspian Sea. It is also the largest saltwater lake in the world, as can be seen from the name and the map, although it is a lake, it is larger than many seas, and the Caspian Sea used to be really a sea, which is part of the Mediterranean Sea and is connected to the Mediterranean Sea, and now there are many marine species in the Caspian Sea, and later the Caspian Sea and the Mediterranean Sea were separated due to the movement of the earth's tectonic plates.

Characteristics of the Caspian SeaThe area has reached 380,000 square kilometers, equivalent to 87 times the area of Qinghai Lake in our country, it was first connected with the Mediterranean Sea, and the area was also counted in the Mediterranean, but because of the movement of the earth's crust, the Caspian Sea was separated from the Mediterranean, and it is estimated that it was renamed the Caspian Sea.

Because the water vapor is evaporated due to the high temperature, and the people around the lake are developing agriculture from this fox spirit, the water level of this lake has been decreasing, and experts have also warned that if people do not control themselves, then the fish in the amber will not be developed, and people will slowly stop using the water of the lake.

The largest lake in the world is the Caspian Sea.

The Caspian Sea is an inland lake located in western Central Asia and is the largest saltwater lake in the world. It is about 1,200 kilometers long, with an average width of 320 kilometers, and the water of more than 130 rivers of various sizes, such as the Volga and the Urals, flows into the sea. The entire sea area can be divided into three parts: northern, central and southern, separated by many islands and shoals.

In the North Caspian Sea, the shore slope is gentle, and the water volume accounts for only 1 of the total water volume.

The bottom of the Middle Caspian Sea, bordered by the continental shelf to the east and the Derbent basin to the west; The volume of water accounts for about 1 3 of the Caspian Sea. The South Caspian Sea, with a low and flat coast, a wide east-west shelf, and a depression to the west, is the deepest place in the Caspian Sea, with a large amount of water, accounting for about 2 3 of the entire Caspian Sea.

seabed sediments, shell-bearing sands in the North Caspian Sea; The depressions of the Middle Caspian Sea are muddy and sandy, while the coastal waters of the east and west coasts are full of shells, gravel sand and clay. The deep waters of the South Caspian Sea are mud and clayey containing thin layers of iron sulfide, and the marginal zone of the east and west shores is sand, gray mud, shells and gravel.

Biological resources

The water in the Caspian Sea is salty, and there are many aquatic plants and animals that are similar to marine life. The Caspian Sea is rich in biological resources, including sturgeon, salmon, silver sturgeon and other fish breeding, as well as seals and other sea animals. There are about 850 species of animals and more than 500 species of plants; Although the number of species is low for such a vast body of water, many of these species are endemic to it.

Animals have been greatly affected by changes in salinity, including sturgeon, herring, pike, perch and western herring; several species of mollusks; and various other microorganisms, including sponges. About 15 species of the Arctic Ocean type (such as Caspian seals) and Mediterranean-type species enrich the basic animals. The Caspian Sea has long been known for its sturgeon, producing about 4 5 of the world's catches.

The above content reference: Encyclopedia - Caspian Sea.

Of course, it's the Caspian Sea, and I've learned geography!

The largest freshwater lake in the Caspian Sea: Lake Superior.

The Caspian Sea, the world's largest lake, is located between Eurasia and is surrounded by snow-capped peaks of the Caucasus Mountains and the Alborz Mountains to the southwest and south, and the other three sides are just open plains.

The world's largest freshwater lake, Lake Superior.