What are the famous karst scenic spots in China? Give a brief introduction.

Yunnan Shilin: It belongs to subtropical low latitude plateau mountain monsoon climate, with an annual average temperature of 16 degrees Celsius. "There is no cold in winter, no heat in summer, and the four seasons are like spring", which is the only karst (karst cave) landscape scenic spot in subtropical plateau area in the world.

Yunnan Stone Forest is located in the second step of the three steps in China. Here, the plateau fluctuates gently, with slight cutting, ranging from 1700 meters to 1950 meters above sea level, and some peaks are above 2200 meters above sea level. The elevation of Dashi forest area is about1750m; The elevation of Naigushilin District is about1820m. The territory is high in the northeast and low in the southwest, high in the east and low in the west.

Huangguoshu Waterfall in Guizhou: Huangguoshu Waterfall is the largest first-class waterfall in Baishui River, a tributary of Dabang River in the Pearl River system. It is named after the homonym "Huangguoshu" of Huang Gerong, a common local plant.

It is a typical waterfall with erosion cracks in karst landform. At first, a crack suddenly appeared on the river bed. After years of constant erosion and dissolution of the river, the crack point stepped on the gap, forming a gap, which formed the basic appearance of the waterfall. Later, due to the erosion of wind and rain, the original waterfall kept retreating. According to geologists' research, there are three major changes in the stable situation of waterfalls today. Its retreat is as long as 205 meters.

Geologically, this phenomenon is also called "rock retreat".

Guilin landscape: Located at low latitude, it belongs to the humid monsoon climate in the middle subtropical zone, with an annual average temperature of 19.8 degrees Celsius. The hottest weather is in July and August, with an average temperature of about 28.5 degrees Celsius and an average annual rainfall of 65,438+0,926 mm.

The earth mountain washes the slope with running water, which makes the slope from steep to slow, and there is no scattered flow and rainstorm flow on the rocky slope. On the contrary, the foothills are mostly places where surface water seeps into the ground.

Baotu Spring in Jinan: The mountainous area here is composed of limestone, and magmatic rocks are hidden under the soil of the plain. Limestone in mountainous areas was formed about 400 million years ago, and its texture is relatively pure. It inclines from south to north, with an inclination of about 30 degrees. Limestone itself is not very dense, with cracks, cracks and caves, which can store and transport groundwater. Groundwater flows to Jinan along the slope of limestone layer. It became the source of Jinan spring water.

Magmatic rocks under the plain are closely organized. Therefore, after the groundwater flows here, it cannot flow through the magmatic rocks. Magmatic rocks are covered with impermeable clay layers, so groundwater can't freely flow out of the ground. Under strong pressure, these blocked groundwater rushed to the ground from underground cracks, forming these famous springs, and Baotu Spring is one of the most famous ones.