The Sahara Desert is home to 1.8 billion trees, so why is there such a change?

Through satellite mapping, researchers found that there are 1.8 billion trees in the Sahara Desert, which may be related to the humid climate, humid air, and easy survival of plants due to global warming.

The Sahara Desert is the largest desert in the world, located in Africa, and was formed 2.5 million years ago. With an area of 9,320,000 square kilometers and a very harsh climate, this place is not suitable for living creatures. What is not known is that the Sahara Desert was actually formed later, it is said that it is 50 stories deep, if one day the sand is dug up, then what is under it, let us ** after all.

The Sahara Desert is one of the most inhospitable places on earth, in fact, the Sahara Desert is not all sand, there are many rocks, there is a mountain more than 3,000 meters above sea level, salt marshes and oases. Over the years, science and technology have become more and more advanced, and scientists have also used some methods to test the depth of the Sahara Desert, and the results obtained are that the deepest part of the Sahara Desert is 320 meters. And its average depth is about 150 meters, in fact, most people don't know what these heights mean, for example, in our life a floor is about three meters, then its deepest place, is actually 107 stories high, and the Eiffel Tower in Paris, France.

Everyone is speculating that if the sand is dug up, then there is something at the bottom of the Sahara Desert, in fact, we can't dig up so much sand, but according to relevant research, we can speculate, some studies have shown that there was a huge lake at the bottom of the Sahara Desert, so this may also indicate that there is a water source under the Sahara Desert. And after further research, it was found that these water sources can be used directly, which really surprised ordinary people. There are also studies that have found that there are mineral resources and oil fields under the desert that can be developed, but in the Sahara Desert, it must be very difficult to develop minerals

In addition, it was discovered that the Sahara Desert was once a grassland, and in this grassland, life could be nurtured, and it was a treasure place. But these also happened 2.5 million years ago, after which there were no signs of life here, and the climate was relatively pleasant at that time and there were no deserts. About 10,000 years ago, there were many imprints of humans in this area, which can be attested to by frescoes.

Either way, the wonders of the Sahara are nature's gift to humanity.

Its depth is 180 meters, and of course depending on the area on the surface of the desert, the depth of the desert can reach 180 meters.

It may be more than 2,000 meters, so it is very deep. It makes people feel terrible that they don't know how deep it is.

The depth of each area of the Sahara Desert is different, and on average, it can reach a depth of about 180 meters.

20,000 years. Aged reedAs the Earth revolves around the Sun, the Earth's axis changes, affecting the distribution of sunlight between seasons, and every 20,000 years, the level of sunlight received by the Earth in the summer changes from high to low and then to high. In North Africa, the monsoon is most active in the sunniest summer years, when the Sahara Desert has a wetter climate and more lush vegetation. In the sunniest summer years, when the monsoon is at its weakest, the Sahara Desert will be as arid as it is today.

The abundance of sand and dust in the sedimentary layer indicates that the climate of the Sahara Desert was relatively arid in those years, and the wind carried more sand and dust to the seafloor. The lack of sand and dust in the finger sedimentary layer indicates that the climate of the Sahara Desert is relatively humid. Analysis of the seafloor sedimentary layers also shows that the climate of the Sahara Desert cycles over a period of 20,000 years. It is really not a fantasy that a desert will become an oasis, but in terms of the length of human life, of course, there is no chance to witness which great desert has changed from a desert with no grass to a forest oasis full of towering trees.

Deserts are often associated with dry water and difficult to see plants, but these lands are often buried with large amounts of rare materials such as oil, and one of the favorite types of destinations for archaeologists is also deserts, because it is likely to find paleontological fossils that are difficult to find on land, and even important artifacts of ancient human society.

The Sahara is a giant that covers 11 countries, including Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, Sudan, and Tunisia.

In the eyes of ordinary people, the yellow sand and the sea are almost two worlds, one is the water town and the other is the dry sea. But in the tropics, the Sahara Desert is bordered by the ocean, and its western border is the western coastline of North Africa, facing the Atlantic Ocean; The Red Sea is at the eastern end and the Mediterranean Sea to the north; Only the south is land, and the southern edge is an arid desert steppe, then transitions to a thin-tree-high savanna climate zone.

The Sahara Desert is located in northern Africa, bordered by the Atlantic Ocean to the west, the Nile River to the east, the Atlas foothills to the north, Sudan to the south, and the Atlantic Ocean to the Red Sea. It stretches for nearly 5,000 kilometers from east to west and nearly 2,000 kilometers from north to south. It spans 11 countries including Algeria, Morocco, and Egypt, making it the largest desert on Earth.

The surface of the Sahara fluctuates gently, generally at an altitude of 250-500 meters. The ground is dominated by Gobi, quicksand or sand dunes, and there are some intermittent river valleys scattered in the desert. The whole environment is extremely dry and hot, with few plants and few animals.

For as long as humans have written words, the word "Sahara" has meant drought, hunger, and death. But who would believe it was once called the Sahara Oasis. How did such a big change from oasis to desert happen?

The two mountain ranges of Ennahir and Tibes, located in the middle of the Sahara Desert, are often hit by storms, with large temperature differences between day and night. Many of the stones on the mountain have become dangerous stone bridges and labyrinthine grottoes.

The Sahara Desert is a vast, extremely arid plain with high temperatures and dry temperatures and little precipitation. The Sahara is still a lush wilderness dotted with lakes.

According to one archaeologist, the formation of the Sahara Desert was due to human activities. The peasants unleashed a series of events that led to the fact that the Sahara is arid and barren today. Humans entered the region and brought agriculture. This once beautiful and rich land began to decline.

The Sahara has gone from being an oasis to a barren desert. Archaeologist Dr. David Wright believes that human activities have caused the desertification of the Sahara Desert. Every time I do something embarrassing with my child, it doesn't last long, and I feel very weak.

Susou: Yeats talking about the past will definitely help you a little. His research shows that human society has spread to this region, and they have cultivated large amounts of land for growing crops and livestock.

Thus destroying the Saharan ecosystem.

Its formation is still a mystery to this day, and many scientists are also exploring the reasons for its formation. It formed like a dinosaur suddenly disappeared, and no one knew about it.

Scientists believe that the formation of the Sahara Desert was 10,000 years ago due to the rising temperature, which caused almost no rain here, and all the ancient plants that lived here died and died.

First of all, it is controlled by the subtropical high pressure belt all year round, and it has a wide area of dry heat. And it's close to the Asian continent, and the wind blows from the eastern land, so it's hard to form rainfall. And to the east there is the Ethiopian plateau, which blocks the humid air currents.

There is only one kind of Sahara topography, which is very flat and has no fluctuations, so one can form a large desert area.

The Sahara Desert is located in North Africa, and North Africa is located on both sides of the Tropic of Capricorn, which is controlled by the subtropical high pressure zone all year round, and the dry and hot downdraft prevails, and the African continent is narrow in the south and wide in the north, and the range controlled by the subtropical high pressure belt is large, and the dry and hot area is wide. Northeast trade winds blow from the eastern land, which is less likely to form precipitation, making North Africa even drier. Its entire location makes it very dry with little precipitation, and over time, it has become the desert it is today.

Mainly because the terrain is flat, undulating and the climate is single, forming a large area of desert area.

Scientists have found a large number of petroglyphs in the Sahara Desert, petroglyphs with buffalo, hippos and some animals living in the water, and what is even more incredible is that there are no camels in these petroglyphs! This is very confusing to scientists, because only where there is a desert can there be camels!

Scientists have also found that these murals are often carved on the rock walls in different styles and at different times, so they are carved on top of each other.

All this shows that at that time, the people of the Sahara region lived and multiplied here for a long time. In other words, at that time, the Sahara region was in the grassland era with water, grass, and people and animals.

Buffalo and hippos must survive on grasslands with water and grass! There are no camels on the petroglyphs in the Sahara Desert, which means that in ancient times, there must have been abundant water and grass here, and it would never be like it is now, full of sand dunes and quicksand, and lifeless everywhere. Scientists have dated radiocarbon-14 and found that the murals were created between 4,500 and 7,400 years ago.

Scientists have studied and analyzed that the Sahara region has gone through a long process of degradation from grasslands to deserts. The Sahara region experienced a sudden change in climate, which led to a sharp decrease in rainfall. This small amount of rainwater flows into the inland basin, but because the rainwater does not flow much, it stays here and slowly forms a swamp.

After a long time, the water in the swamp slowly dried up under the sun, and the sand dunes began to appear on the land of the Sahara. At this time, the climate in the Sahara region deteriorated more severely, the wind and sand became more and more violent, and the Sahara region slowly turned into a desert area.

Sahara Desert.

Controlled alternately by the subtropical high pressure zone and the trade wind belt, there is little rain throughout the year, thus forming today's Sahara Desert!

Wind and other factors, such as topography, led to the formation of the Sahara Desert.

The Sahara Desert, the largest desert in the world, covers an area of more than 9.4 million square kilometers, and China's land area is not much wider, the west from the Atlantic coast, east to the Red Sea, south to the Sahel, north to the Alatus Mountains and the Mediterranean Sea as the boundary, the length of the east and west is about 4800 kilometers, the length of the north and south is about 1300 kilometers - 1900 kilometers, almost the area of northern Africa. <>

The Sahara Desert has a large area, not that the desert is full of yellow sand, there will also be the existence of oasis rivers, the sand dune coverage rate reaches about 15%, the sand dunes cover each other independently, not all the places covered by the dunes are the same, they have their own characteristics, some sand covers only a few centimeters, some sand dunes cover up to several hundred meters, some places, the sand dunes are changing, there is wind, the yellow sand is all over the sky, after the wind is cautious, the sand dunes become flat, and there are small sand dunes in the place of a flat river. This is also the reason why it is easy to get lost in the desert, the quicksand changes its position with the wind, the environment in which people are located is always changing, it may be in the same place, the surrounding sand dunes are changing, the appearance of the dunes is similar, there is a lack of reference objects in the desert, and the reference objects will change if they look the same, so it is difficult to discern the direction. <>

There is a mysterious place in the Sahara Desert known as the "Eye of the Sahara", so how did the Eye of the Sahara come to be? The more widespread theory is that the stone hits the earth; Alien Landing says; It was the people of the earth who said. But none of these claims are very reliable.

The theory of geological uplift erosion is of high confidence. <>

In the Sahara, people named the "Eye of the Sahara" when they discovered the disk-shaped terrain of West Africa from space, like the eyes of man. With a diameter of about 50 kilometers and a height of about 400 meters, it is very flat, like a huge ring, so large that it can only be found in its entirety from space. How did this disc-shaped terrain come to be?

From a scientific point of view, it is more likely to be believed that it was formed because of geological movements, but there is no precise account of how the "Eye of the Sahara" was formed.