There are many reasons for the formation of lakes

There are many reasons for the formation of lakes, such as the movement of the earth’s crust, the erosion of nature, the accumulation and the artificial force, which will make the surface of the lake form a depression to become a lake. Generally speaking, the genesis of lakes can be divided into several types:
(1) The tectonic lakes have depressions on the surface of alpine plateaus, hills and plains, and the depressions gradually store water to form lakes, such as Qinghai Lake, Poyang Lake and Dongting Lake. Dianchi, etc.
(ii) crater eruption after the volcano will leave portions huge crater, crater formed by gradually reservoir lakes, e.g. Tianchi .
(3) Some rivers in the rivers in the plains are affected by river migration and river channel siltation, etc., and lakes will be formed on the rivers. These lakes will be affected by the injection of river water and will expand in the lake during the wet season. When the amount of water is relatively balanced, the form of Hecheng Lake is relatively stable, but when the amount of water changes greatly, the change of the form of Hecheng Lake also increases. Most of the lakes along the Yangtze River in Hubei are such.
(4) The rivers in the plain area of ??the oxbow lake will cause the river to become more and more curved due to the erosion and erosion of the river. The river will naturally be cut and straightened, and the original curved river will be abandoned to form the so-called oxbow lake. . For example, Wuliangsuhai in Inner Mongolia is the famous Oxbow Lake.
(5) The barrier lake is a lake that is caused by geological changes, such as volcanic lava flow, seismic activity, etc., causing landslides, causing blockage of river valleys or riverbeds, and then storing water. If it is a dammed lake formed by the volcanic lava blockage, it is called a lava lake. For example, Jingbo Lake is a typical dammed lake.
(6) Glacier Lakes Most of the glacial lakes are distributed in places where there are glaciers in the mountains. When the glaciers melt, they will become lakes because of the pits excavated by the glaciers and the dissolved water of the icebergs. The glacial lakes in Taiwan are mostly distributed at high altitudes. Such as the snow-capped mountains.