What are the topographic features of the Yunnan Guizhou Plateau, and what are the geomorphological c

Topographic characteristics of the Yunnan-Guizhou Plateau: The topography of the plateau presents a stepwise decline from northwest to southeast, and the entire Yunnan-Guizhou Plateau can be further divided into the Yunnan Plateau in the west and the Guizhou Plateau in the east.

The general topography trend of the Yunnan Plateau is high in the north, low in the south, highest in the northwest and lowest in the southeast, and descends in steps from north to south. Its northwest is the highest zone of the Yunnan-Guizhou Plateau, with an altitude of 3,000-4,000 meters, and many high mountains covered with snow all year round.

Guizhou Plateau, the terrain is inclined from west to east, from the middle to the south and the north of the blue side, there are 4 main mountain ranges in the territory, the mountain range generally presents a northeast and southwest trend, the Wumeng Mountain in the northwest is adjacent to Yunnan, showing a north-south trend, and the altitude is generally between 2000-2400 meters.

The landform of the Yunnan-Guizhou Plateau is a typical karst landform.

The karst landform is formed as the result of long-term dissolution of groundwater in limestone areas, which is formed by the dissolution and precipitation, erosion and sedimentation of soluble rocks, as well as gravity collapse, collapse and accumulation by groundwater and surface water.

Distribution of karst landforms on the Yunnan-Guizhou Plateau.

The Yunnan-Guizhou Plateau has a contiguous karst mountain distribution, and the more concentrated areas are the adjacent areas of Yunnan, Guizhou and Guangxi, with a total area of nearly 170,000 square kilometers. Karst landforms account for more than 70% of the total area in Guizhou Province.

Yunnan Province starts from the Pudu River valley in the north, passes through Kunming, Yuxi, Eshan, Shiping to the Red River Valley, and is divided into two areas, east and west, the karst landform development in the east is very typical, and the karst area in the west is more concentrated in Lijiang area in northwest Yunnan, Diqing Tibetan Autonomous Prefecture, and Baoshan area in southwest Yunnan, Lincang area and Simao area in southern Yunnan.

The landform of the Yunnan-Guizhou Plateau is a typical karst landform.

Karst landforms account for more than 70% of the total area in Guizhou Province. Yunnan Province starts from the Pudu River valley in the north, passes through Kunming, Yuxi, Eshan, Shiping to the Red River Valley, and is divided into two areas, east and west, the karst landform development in the east is very typical, and the karst area in the west is more concentrated in Lijiang area in northwest Yunnan, Diqing Tibetan Autonomous Prefecture, and Baoshan area in southwest Yunnan, Lincang area and Simao area in southern Yunnan.

The total distribution area of limestone in these areas accounts for more than 50% of the area of Yunnan Province, and at the same time in the north and northwest of Guangxi Zhuang Autonomous Region, the western part of Hunan Province, the southern mountainous area of Sichuan Province, and the southeastern mountainous area of Chongqing City, and the western part of Hubei Province.

The value significance of karst landforms on the Yunnan-Guizhou Plateau

China's Yunnan-Guizhou region was not covered by large glaciers during the Quaternary Ice Age, and became a refuge for many ancient flora and fauna. In addition, the karst landform area has complex landforms and diverse habitats, so for a long time, human interference to the environment in the area is small, and species remain intact in the Yunnan-Guizhou area.

The Fanjing Mountain in the area is also included in the United Nations Man and Biosphere Nature Reserve Network and the World Natural Heritage List; Libo Maolan Karst Forest Nature Reserve still preserves the most intact karst primeval forest in the same latitude, with a forest coverage rate of more than 90%.

The Yunnan-Guizhou Plateau is mainly karst landforms. Karst landforms are also known as karst landforms. It is a landform that has been continuously developed by the dissolution of flowing water on a soluble rock matrix.

Such a landform is manifested as a forest of rocky peaks on the ground, surrounded by peaks, and rugged; The underground is crisscrossed by underground flows, dark rivers and karst caves, and the whole bedrock shows a certain degree of instability. There are also a lot of longitudinal cracks in the limestone bedrock, and these cracks are also connected with the funnel, once the funnel is opened, under the action of surface runoff, the soil on the bedrock will follow the stone cracks, and leak into the underground karst cave through the funnel to cause serious soil erosion, and finally cause the land "rocky desertification catastrophe". Such a geological zone is listed by the academic community as one of the seven fragile ecosystems in China.

The Yunnan-Guizhou Plateau has a contiguous distribution of Zaobianxiao karst mountains, and the more concentrated areas are the adjacent areas of Yunnan, Guizhou and Guizhou, with a total area of nearly 170,000 square kilometers. Karst landforms account for more than 70% of the total area in Guizhou Province. Yunnan Province starts from the Pudu River valley in the north, passes through Kunming, Yuxi, Eshan, Shiping to the Red River Valley, and is divided into two areas, east and west, the karst landform development in the east is very typical, and the karst area in the west is more concentrated in Lijiang area in northwest Yunnan, Diqing Tibetan Autonomous Prefecture, and Baoshan area in southwest Yunnan, Lincang area and Simao area in southern Yunnan.

The total distribution area of limestone in these areas accounts for more than 50% of the area of Yunnan Province, and at the same time in the north and northwest of Guangxi Zhuang Autonomous Region, the western part of Hunan Province, the southern mountainous area of Sichuan Province, and the southeastern mountainous area of Chongqing City, and the western part of Hubei Province.

The terrain is rugged, there is a typical karst landform, because of the wide spread of red soil, it is also known as the "red soil plateau". The Yunnan-Guizhou Plateau is located in the southwest of China, including the eastern part of Yunnan Province, the whole province of Guizhou, the northwest of Guangxi Zhuang Autonomous Region and the borders of Sichuan, Hubei, Hunan and other provinces. It is roughly bounded by the Wumeng Mountains and is divided into two parts: the Yunnan Plateau and the Guizhou Plateau.

In terms of temperature characteristics, most areas of the Yunnan Plateau can be said to be generally as follows: there is no cool in summer, no severe cold in winter, the temperature is suitable, the four seasons are like spring, and there are no obvious changes in the four seasons in a year. Kunming has always enjoyed the reputation of the Spring City in China's climate.

The average temperature on the plateau is roughly between 15 and 22 degrees Celsius, and the average temperature in April is generally higher than that in October, which means that the spring temperature is higher than the autumn temperature, and the spring weather is more sunny and the autumn weather is more cloudy and rainy.

Compared with the characteristics of precipitation, most areas of the Yunnan Plateau can not distinguish the four seasons of spring, summer, autumn and winter in a year, and the tom is divided into two seasons, dry and wet, from November to April of the following year is the dry season, and from May to October is the wet season. The rainfall in May is about 3 10 times more than that in April, and the rainfall in October is about 3 10 times more than that in November, so there is a saying that April is the "end of the dry season", May is the "head of the wet season", October is the "end of the wet season", and November is the "head of the dry season".

The climatic characteristics of the Guizhou Plateau can be simply summarized as: abundant rainfall, gentle rainfall, more rainy days, cloudy and foggy throughout the year, less sunshine, humid climate, moderate temperature every year, and a feeling of slow winter and cool summer.

Guizhou Plateau is cloudy and foggy, cloudy, rainy days, so the sunshine is greatly less, the annual sunshine hours of the Guizhou Plateau, generally about 1200 1400 hours, about half of the Loess Plateau, the average daily sunshine time is only 4 hours, from the annual sunshine hours, Guizhou Plateau is one of the least regions in the country, which is a deficiency in its climate.

The Yunnan-Guizhou Plateau is the fourth largest plateau in China, located in southwest China, from the Hengduan Mountains in the west, the Sichuan Basin in the north, and the Xuefeng Mountains in Hunan Province in the east. So what are the characteristics of the Yunnan-Guizhou Plateau?

Characteristics of the Yunnan-Guizhou Plateau

The Yunnan Plateau has a rugged terrain and a typical karst landform, which is also known as the Red Clay Plateau because of the wide spread of red soil. It is the intersection of two groups of mountain ranges in the north-south direction and the northeast-southwest trend in China, and the terrain is high in the northwest and low in the southeast. It is roughly bounded by the Wumeng Mountains and is divided into two parts: the Yunnan Plateau and the Guizhou Plateau.

The Yunnan-Guizhou Plateau in the west is above 2,000 meters above sea level, and the plateau topography is more obvious.

The Guizhou Plateau in the east is undulating, there are many mountains, and the plateau surface is not much preserved, called "mountain plain", and the altitude is between 1000-1500 meters.

The Yunnan Plateau and the Guizhou Plateau are connected together, and the boundary is unclear, so they are collectively called the "Yunnan-Guizhou Plateau". The Yunnan Plateau is located in the eastern part of Yunnan Province to the east of Ailao Mountain, and is called the Yunnan Plateau because it is south of the Yunling Mountains.

The top of the Ziyu mountain on the Yunnan Plateau is mostly a wide flat ground, or a gently undulating ground, and there is a saying that "the road on the top of the high mountain is wide". Among the rolling hills, there are many lake basins and dams. There are more than 1,200 dams in Yunnan, accounting for 1 3 of the province's cultivated land, and the low-sinking ones become basins, and some accumulate water into lakes.