The formation of desert is very simple, mainly caused by waste and human changing the surface environment. However, China's deserts are mainly concentrated in the northwest region, which is located in the higher-lying areas of China, so it is less affected by the marine environment. In addition to the above destructive factors, the second is the harsh climate in northwest China. Even if water vapor appears in the ocean, it is difficult to enter the hinterland of the desert, resulting in water shortage. Water vapor in the ocean can't reach it, so it is impossible to form rain. The complete disappearance of desert will destroy the natural ecology.

A "wet" desert is also impossible. Although sometimes, Indian Ocean cyclones can transport some water to the northwest of China, such water transport can be said to be quite small, not too much. There can't be water. As long as there is a strong wind, it can trigger a sandstorm weather pattern. Therefore, northern China encounters sandstorms every year. In addition to the Mongolian desert climate, there are sandstorms in northwest China. The desert is not caused by human beings.

When there are no humans, there are many deserts on the earth. For example, during the Triassic period, the earth formed the Pangu supercontinent. The reason why deserts can't be completely eliminated is that the formation of deserts is often related to climate. According to junior high school geography knowledge, we know that there are four pressure zones on the earth, namely: equatorial low pressure zone, subtropical high pressure zone, sub-polar low pressure zone and polar high pressure zone. In the inland areas of the mainland, because living in the deep inland and far away from the sea, it is difficult to reach the ocean water vapor, so the precipitation is scarce and it is easy to form deserts, mostly temperate deserts, such as inland Central Asia in Eurasia.

The above is Bian Xiao's detailed explanation of the problem. I hope it will help you. You can leave me a message in the comments section if you have any questions. If there is anything wrong, you can also interact with me more. If you like the author, you can also follow me. Your praise is the greatest help to me. Thank you.