Question 2: According to the saying that "Guilin's landscape is the best in the world", analyze the geological reasons for Guilin's beautiful scenery. Geological reasons for Guilin's beautiful scenery: Guilin's landform belongs to karst landform, which is formed by chemical dissolution of limestone under running water.
Karst landform is the general name of surface and underground forms formed by dissolving soluble rocks (mostly limestone) by water with dissolving power, also known as karst landform. In addition to dissolution, it also includes mechanical erosion processes such as erosion, latent erosion and collapse of running water.
The word karst comes from the name of the carbonate plateau in the Istra Peninsula in the northwest of the former Yugoslavia, and the local name means the place where the rocks are * * *. "Karst landform" is named after the origin of modern karst research. Yunnan-Guizhou Plateau in China and Chenzhou in southern Hunan belong to typical karst landform areas.
Question 3: What is the cause and process of Guilin's landscape formation? "Clouds in the air, green trees and red flowers in the mountains, and bamboo rafts on the river make you seem to have entered a continuous picture. It' s really' the ship is on the blue waves, and people travel in the world of scrolls'. " People say that Guilin is the best in the world. So, how did Guilin's wonderful mountains and beautiful waters come into being?
Facts have proved that the creation of this rare landscape wonder in Guilin is a masterpiece of nature. Many thousands of years ago, Guangxi was submerged by the sea of Wang Yang, and a lot of calcium was deposited on the seabed, forming thick limestone, which was also widely distributed. Later, due to crustal movement, the seabed here gradually became land, and limestone was dissolved by running water and taken away. In terms of material structure, limestone is composed of calcium carbonate, which can be dissolved by water containing carbon dioxide. The higher the temperature, the faster the limestone dissolves, so dissolution is the main way for limestone to be destroyed.
This way of destruction makes the rocks not form a lot of sediment after destruction, but dissolve in water, so the water in Lijiang River is clear and transparent. At the same time, this failure process does not peel from the surface to the inside like ordinary rocks, but it will be destroyed wherever the water flows. As long as there are cracks in limestone, water containing carbon dioxide will drill out of the cracks. After a long time, water will gradually dissolve the cracks into cavities and wash them away, so that the cracks will continue to expand.
If the cracks in limestone are vertical at this time, the karst cave will become a funnel-shaped depression. As they continue to expand and communicate with each other, limestone will leave isolated columns. This is what the article said, "one after another, unconnected with each other, like an old man, like a giant elephant, like a camel, with strange peaks listed in different forms."
Question 4: Why is Guilin a world-famous tourist attraction and historical and cultural city, located in the northeast of Guangxi? Located on the west bank of Lijiang River, it is named for its rich osmanthus and osmanthus trees. Typical karst terrain constitutes a unique Guilin landscape, which is the general name of Guilin tourism resources. Guilin landscape refers to a wide range of projects. Guilin's landscape is known as "the best in the world", with beautiful mountains and clear waters and beautiful caves. The landscape of Guilin includes mountains, water, caves, historical sites, stone carvings and so on.
Brief introduction of Guilin
geographical position
Guilin is a world-famous scenic city with unique karst landforms [1].
Introduction to geomorphology
The mountains here are pulled up from the ground in various ways; The water of Lijiang River is winding and clear as a mirror. There are many caves in the mountains, and the caves are picturesque; The grotesque rocks in the cave are fantastic and dazzling, thus forming the "four wonders" of Guilin's "clear mountains, beautiful water, strange caves and beautiful stones", which has been called "Guilin's landscape is the best in the world" since ancient times.
Causes of landform formation
(1) Rocky Mountain-Qifeng Peak Forest The topographic features of the Rocky Mountain are that it rises from the ground and its slopes are steep. Rocky mountains are steep around, because most limestone bodies are dissolved and become downward channels. Therefore, the rock slope is dominated by collapse. On the contrary, there is no scattered flow and rainstorm flow on the rocky slope surface, which is caused by running water scouring the slope surface from acute angle to gentle slope. On the contrary, the foothills are mostly places where surface water seeps into the ground. Therefore, there are many streams, rivers and gullies around the Rocky Mountain. Therefore, the foot of the rocky mountain becomes the erosion and dissolution area of flowing water, and the lateral erosion of the river and the formation of the sinkhole will make the rocky mountain slope change from gentle to steep. For example, in the Qixingyan area of Zhaoqing, there is a Hepoyan, which was eroded by a tributary of the Xijiang River. Today, there is a layer of riverbed pebbles (pebbles) with a thickness of 2 meters in the rocks, indicating that it is riverbed facies deposition. After the establishment of this rock, the rock mouth collapsed, making the rocky mountain form a cliff. Such holes can be called "side holes". Because the surface water flow is concentrated in the Rocky Mountain, the walls around the Rocky Mountain stand. Form a lonely peak that rises from the ground. Sometimes the cliff is as high as thousands of feet, and it is magnificent, such as the Duxiu Peak in Guilin. The example of Rocky Mountain collapse can be proved by finding huge falling rocks at the foot of Rocky Mountain. For example, in Qixingyan area of Zhaoqing, 1970 collapsed immediately after the rain. Stones with a diameter of more than 2 meters fell from the cliff and penetrated the roof of the cement building. Collapse can make a cliff into a cliff, that is, a cliff with a forehead protruding from the top of the cliff. Another example is the Pearl Cave and the Double Pearl Cave in Zhaoqing, both of which are when the boulder collapses. It's just stuck in a crack in the rock, indicating that the cliff slope is mainly collapsed. (2) There are holes in the stone mountain, and there are more than one hole in the mountain. For example, Qixingyan in Guilin has five holes. But the strangest thing is the "foot hole". Foot hole is a cave formed at the foot of a rocky mountain, hence the name "foot hole". Its topographic features develop along the surface of groundwater. Therefore, there is generally a huge cave system inside the foot hole. For example, the big stone of Qixingyan in Zhaoqing means that there is a big hall in the cave, and small holes and cloisters are distributed around the big hall, forming an underground lake at the big hall, indicating that the foot hole is caused by strong dissolution near the underground water surface. Therefore, the top of the foothills is generally formed according to the groundwater level, so the flat top is a major topographic feature of the foothills. "The top is as flat as a razor" is an adjective that local county annals call this kind of foot hole similar. But the top of the foot hole is not flat as a plate, but there are many stone pots and clocks distributed in the terrain. This kind of terrain is rare in other caves. Stone pot is the distribution of several shallow semi-circular arch caves, the size is less than 1 m, and the caves are less than half a meter. The semicircular shape is complete and does not interfere with each other, indicating that the stone pot is dissolved, which is caused by strong dissolution and erosion in the central part. Stone pots are generally about the same size, which is the result of horizontal flow when the cave is filled with water. Generally speaking, water flow is stratified flow and turbulent flow. Laminar flow means that the velocity of every point in the water layer is the same. In limestone cracks, the water flow is laminar, and its speed is slow, which is lower than 65438 0 cm per second. The bigger the hole, the smoother the water flow, and the different speeds of each point in the flowing water, which is turbulence. Running water is divided into multiple shares according to speed, one rising and one falling, one urgent and one slow. If the velocity in a 3 cm solution hole is 0. 1 cm, it can change from laminar flow to turbulent flow. In the rainy season, the karst cave is full of water, and the dissolving power at the impact site is greater, because the pressure at the impact site is large, and the dissolving amount increases. For example, according to the experimental data, the rock gap is enlarged to 0.35 mm every year when the groundwater is not compressed, but it can be increased to 5 mm every year after being filled with water, that is, the dissolution force is increased by 15 times after being compressed. The rapids hitting the ceiling can ... >>
Question 5: Why do you like Guilin landscape? Speaking of "Guilin's landscape is the best in the world", it is a household name. But the source of this immortal famous sentence is little known.
80 1 years ago, in the Song Dynasty, Wang, who was in charge of Guangxi's political supervision at that time, gave a farewell banquet for Guilin candidates who went to Beijing to take the exam, and put forward the theory that "Guilin's landscape is the best in the world" for the first time. 1983, when the cultural relics workers in Guilin were cleaning up the stone carvings of Duxiufeng, they accidentally found the words "Guilin's landscape is the best in the world" engraved here.
Due to the development of tourism in Song Dynasty, many people left praise similar to that of Wang. For example, Zhang Xun's "Guilin's landscape is the highest in the world", Deng Gong's "Guilin's cave is the highest in the world", Zhang Xiaoxiang's "Guilin's landscape is the best in the southeast" and so on. Among them, Zengbo Li wrote "Guilin's landscape is the best in the world" in Rebuilding Xiangxi Tower at the end of the Southern Song Dynasty, which is very similar to Wang's formulation.
In addition, according to the current research, it is found that the earliest article praising Guilin's landscape in history came from Yan Yanzhi, a great scholar in the Southern and Northern Dynasties. In the early years of Yuanjia in Song Wendi (A.D. 424), he came to Guilin to visit the Duxiu Peak and realize the landscape, and wrote the poem "Those who are not alone are all in the city".
Guilin is located in the northeast of Guangxi Zhuang Autonomous Region. Its unique karst landform is integrated with the beautiful Lijiang River and its surrounding beautiful and charming pastoral scenery, forming a unique and famous "Guilin landscape" with "green hills, beautiful waters, strange caves and beautiful stones", and has the reputation of "Guilin landscape is the best in the world". Guilin is named after the "Jade Gui Becomes a Forest", and its long history can be traced back to the "Guilin County" established after Qin Shihuang unified Lingnan in 2 14 BC.
Before I arrived in Guilin, I was often attracted by her reputation as "the best scenery in the world". I have always wanted to carefully prepare a holiday and a mood to savor the landscape, human feelings, customs and leisurely life here. Drifting on the picturesque Lijiang River; On the branches of the moon, go to Xiangshan to appreciate the reflection of the moon in the water; Feel the diligence and wisdom of the working people in Longji terraced fields; Put yourself lazily in Yangshuo, indulge your thoughts leisurely and blend into the intersection of Chinese and western cultures; Or eat a bowl of steaming Guilin rice noodles in the small street of Guilin ... Guilin-backpack/
The famous saying that Guilin's landscape is the best in the world has been missing for a long time. In the textual research of past dynasties, some people think that "the beauty of Guilin should be the best in the world" was said by Fan Chengda in the Song Dynasty. Some people think that it is a sentence from Zengbo Li's "Rebuilding Xiangnan Building", the economic and strategic history of Guizhou in the late Southern Song Dynasty. In the 11th year of Guangxu reign in Qing Dynasty, Jin Wuxiang, governor of Guangxi, wrote in the poem "Lijiang Grass" that Guilin's landscape fell first. At this point, people agree that Guilin's landscape is the best in the world "comes from Jin Wuxiang's mouth." 1983, Yang Yinsheng, a master of rubbings in Guilin, discovered a stone tablet under the stalactites when he was rubbing on the Duxiu Peak in the famous mountain of Guilin. One of the poems is "Guilin's landscape is the best in the world, and its jade is clear." "According to the preface of this poem tablet, this poem was written shortly after Song Jiatai changed the Yuan Dynasty to Guilin University (Imperial Examination) in the Southern Song Dynasty, which mentioned Wang Siming Gong Zheng's imprisonment right for eleven people who passed the examination. This discovery predates the original statement by 685 years.
Question 6: The article "Guilin Landscape" tells us that it is said that "Guilin landscape is the best in the world" because of the exaggerated rhetoric used here. Is there more than one beautiful place in Guilin? It is obviously exaggerated to say that Guilin has the most beautiful landscape. Glad to answer for you! You can ask questions if you don't understand! If you agree with my answer. Please click the button below to choose the satisfactory answer. Thank you.
Thinking Skills: What's the expression? How to start? How to end it? Wait a minute. It solves the problem of "makeup", how to add icing on the cake and make the article more beautiful.