Where is the karst landform?
2. South of Huaihe River in Qinling Mountains. South of Huaihe River in Qinling Mountains is the distribution area of subtropical karst landform, represented by gentle hills and depressions. Underground rivers are more and shorter than tropical rivers, with an average drainage area of less than 60 square kilometers. There are few depressions, only about 1 per square kilometer, decreasing from south to north. On the contrary, the proportion of dry valleys has increased rapidly. The normal terrain is not typical, mainly steamed bread-shaped hills with a slope of about 25 degrees. Compared with tropical areas, the number of caves is greatly reduced, and most of them are karst caves, and most of them are karst caves in the south of subtropical areas.
3. Guizhou. Guizhou is a province dominated by karst landforms, including Hani Stone Forest, Xingyi Xiuwen Stone Forest and other stone forest areas, as well as cave landforms such as Longgong Cave, Guiyang Underground Park, Zhenning Rhino Cave, Zhenyuan Qinglong Cave, Longshan Fairy Cave, Zhijin Cave and Qianling Mountain Qilin Cave near Huangguoshu Waterfall. In addition, there are famous scenic spots in Guizhou, such as the rock wall of Huangguoshu Waterfall, the largest waterfall in China, and Zhijin Cave, the largest underground water cave in the world. Guizhou's karst landforms are diverse and changeable, which is one of the natural wonders of China.
4. Carbonate exposed area. Karst landforms are mainly distributed in the exposed area of carbonate rocks in the western region, covering an area of about 9 1 ~ 1.3 million square kilometers. These landforms are rugged, the rocks are gorgeous and there are many strange peaks. On the surface, there are common forms such as stone bud, stone forest, peak forest, karst ditch, funnel, sinkhole and karst depression. These landforms provide important materials and places for geological research, and also become tourist attractions.
5. Southern Australia. Southern Australia is one of the famous karst landform distribution areas, including the Dunac Alps in Yugoslavia, the Alps at the junction of Italy and Austria, the French Central Plateau, the Russian Urals and southern Australia. These areas are widely regarded as natural landforms, attracting many tourists to watch and explore. In addition, these areas are also important places for geological and ecological research, which is of great significance for understanding the evolution history and biodiversity of the earth.
6. Dry valleys. Dry valley is a valley left over from the disappearance of surface runoff in karst area. The reason for its formation is that a certain section of river water flows into the ground along the shaft or water tunnel at the bottom of the river, forming underground runoff. Arid valley is a kind of karst landform, which is common in southwest China, such as Micang Mountain in Sichuan and Tiger Leaping Gorge in Yunnan. The topography of the dry valley is characterized by the north-south trend, the bottom, and peaks or peaks on both sides. The existence of arid valley makes these areas form a unique natural landscape, and also provides important protection value for the local ecosystem and cultural heritage.
7. Yunnan Shilin. Yunnan Shilin is a "forest" composed of rocks, which is composed of stone buds as high as 20-30 meters, densely covered as a forest. It is formed under the conditions of high purity, large thickness, horizontal bedding and tropical rain. Stone forest is a kind of karst landform, with different shapes, abrupt towering and different postures. Shilin is a natural wonder and a tourist attraction, which attracts many tourists to watch it.
8. China and Guangxi. Guangxi, China is a karst landform area in China and one of the most dispersed areas in the world. In addition to China, there are karst landforms in Coase, France and Kentucky, USA. Karst landforms refer to landforms formed by natural factors such as geological processes and water erosion, such as Coase in France and Kentucky in the United States. In China, there are karst caves, underground rivers and karst landforms in Guangxi, which are unique and attract many tourists to watch. At the same time, karst landforms also pose a threat to the local ecological environment and human cultural heritage, which requires us to strengthen protection.
9. Qinghai-Tibet Plateau. The karst landform in Qinghai-Tibet Plateau is characterized by intense freeze-thaw weathering. The frozen-thaw stone mounds and walls formed by freeze-thaw weathering are covered with residual slopes formed by periglacial action. The karst landforms in Qinghai-Tibet Plateau are widely distributed, which is one of the highest and most complicated landforms in the world and one of the important natural landscapes in southwest China. The karst landform in Qinghai-Tibet Plateau not only has natural beauty, but also is an important research object of geology and ecology.
10. Ural Mountain in Russia. The Ural Mountain in Russia is an important area of karst landform distribution in Russia, and it is also one of the world-famous natural landscapes. It is located in the Russian Far East, bordering China, Viet Nam, North Korea, Japan, India and Australia. The Ural Mountains, about 500 kilometers long, is the natural dividing line of Eurasia, with steep terrain and thick snow and frozen soil on the top. The climate here is cold, but it is a treasure house of natural ecology, rich in wildlife and mineral resources. Russia's Ural Mountain is one of Russia's important nature reserves and a tourist attraction, attracting many tourists to watch and experience.
1 1. Cuba and Jamaica. Cuba and Jamaica are two countries across North America, with diverse landforms, including mountains, deserts, forests and lakes. Among them, the karst landforms in Cuba and Jamaica are particularly striking, such as "ice caves", "caves" and "stone forests". These landforms are not only beautiful, but also of scientific value, which is of great significance to the study of geology, geophysics and other disciplines. At the same time, these landforms are also important resources for tourism, attracting many tourists to watch and experience.
12. Yunnan-Guizhou Plateau. Yunnan-Guizhou Plateau is the most typical karst landform distribution area in southwest China, and its limestone strata and sufficient precipitation provide good conditions for karst landform development. Yunnan-Guizhou Plateau is an important ecological barrier in southwest China, and its karst landscape is unique and breathtaking. At the same time, the climatic and environmental conditions of Yunnan-Guizhou Plateau also provide a guarantee for the ecological environment and biodiversity in this area. Therefore, the protection and rational utilization of karst landforms in Yunnan-Guizhou Plateau will not only help to protect its ecosystem, but also help to promote the development and progress of the region.