Geomorphology, Datong mountain area covers an area of 278 square kilometers, accounting for13.4% of the total area; Hilly area 1 177 square kilometers, accounting for 56.6% of the total area; Pingchuan covers an area of 626 square kilometers, accounting for only 30% of the total area. Among them, mountains and hills are mainly concentrated in the west, north and northeast, while Pingchuan District is located in the southeast. This constitutes the main characteristics of Datong, which is high in the northwest and low in the southeast, and the terrain inclines from northwest to southeast. [3]
Datong is located at the intersection of Yinshan Mountain in the south, Yanshan Mountain in the east, Luliang Mountain in the north and Taihang Mountain in the north, and it is the passage for birds headed by geese in the middle to migrate southward. The northwest mountains belong to the yinshan mountains and Luliang Mountains, mainly including Dengbai Mountain, Shuang Shan, Erlang Mountain, Yunmen Mountain and Cailiang Mountain. The mountains in the southeast belong to Taihang Mountain, mainly including Hengshan Mountain, Taibai Mountain and Liuling Mountain. The overall elevation of the city is between1000 ~1500m. The highest point is Huangyangjian in Liulingshan, Yanggao County (2420m above sea level), and the lowest point is the He Ran exit of Huata Village, Lingqiu County (558m above sea level). Sanggan River runs through the city from southwest to northeast, forming a trough basin with high periphery, low middle and two mountains and one river. Besides Sanggan River, the main rivers in China are Yu He, Nanyang River, Liu Hu, Tanghe River and Cangtou River, which belong to Haihe River system.
What kind of terrain is Datong? Datong mountainous area covers an area of 278 square kilometers, accounting for13.4% of the total area; Hilly area 1 177 square kilometers, accounting for 56.6% of the total area; Pingchuan covers an area of 626 square kilometers, accounting for only 30% of the total area. Among them, mountains and hills are mainly concentrated in the west, north and northeast, while Pingchuan District is located in the southeast. This constitutes the main characteristics of Datong, which is high in the northwest and low in the southeast, and the terrain inclines from northwest to southeast.
What is the topography of the basin? Bowl shaped
What kind of pass is the terrain? The mountain pass is a flat and relatively low continuous mountain ridge position. ...
Spillway is arranged on the right bank, and its excavated material is the main material source for dam filling. The design standard of spillway is once-in-a-thousand-year flood (Q=20 900 m3/s), and the possible maximum flood (Q=28 500 m3/s) is checked. After flood regulation by the reservoir, the corresponding discharge flows are 14 782 m3/s and 2 1 750 m3/s respectively. The size of spillway orifice is 13 m wide. ....
What is the terrain like in Liulin? Liulin Town is one of the towns under the jurisdiction of Juye County, Shandong Province. It was merged from Liulin Township and Zhang Biao Township [1] on February 6, 2006.
Located in the southwest of Juye County, it is adjacent to Jining City in the east, Menghai Town in Dingtao County in the west, Gulong Town in the north and Chengwu in the south. * * * has a population of 62,000 and governs 49 administrative villages with a total area of 123 square kilometers.
Area code: 0530; Postal code: 274922.
With convenient transportation, superior geographical location, criss-crossing highways, beautiful environment and perfect facilities, this town is an important high-quality grain and cotton producing area and a new coal chemical base in China, and also the economic center of Shandong Province and the famous material trade and circulation center in southwest Shandong.
Liulin belongs to North China Plain, which belongs to temperate monsoon climate zone. It is hot in Leng Xia in winter, and the temperature difference between winter and summer is large. The area is flat, with no hills and endless plains, which is suitable for developing agriculture, forestry, animal husbandry and fishery. Beimu River (a tributary of Zhu Zhaoxin River) and Wanfu River pass through this area, providing important water sources for agricultural production.
Forestry, animal husbandry, sericulture and cotton have developed rapidly in this town, and agricultural industrialization has begun to take shape. The rapid development of animal husbandry has become half of the country supporting Liulin economy. In 2005, it was rated as an advanced township of animal husbandry production in Heze City. In 2006, the intercropping area of forest, grain, forest and grass in the town reached more than 40 thousand mu, with high-yield forest 1 10 thousand mu. Forest products processing industry has become the leading industry in this town. The area of high-quality mulberry fields reached 12000 mu, and the number of professional sericulture households increased to 5000. The cotton planting area exceeds 60,000 mu.
Wanfu Coal Mine, one of the seven pairs of mines in Juye Coalfield, is located in this town, with geological reserves of 500 million tons, industrial reserve of 326 million tons, recoverable reserves of 200 million tons, well type of 65.438+800,000 tons/year and service life of 70 years. At present, well drilling construction has begun.
What is the topography of Tongxiang? Tongxiang City is a part of the Yangtze River Delta Plain, with low terrain and no hills. Generally speaking, it is high in the southeast and low in the northwest, slightly inclined to Taihu Lake, with an average elevation of 5.3 meters.
What is the terrain of Huangpi? Huangpi district is located in the middle reaches of the Yangtze River, at the southern foot of Dabie Mountain. The terrain is high in the north and low in the south. It is the junction of Jianghan Plain and low hills in northeastern Hubei. Generally speaking, it is "three mountains and a half, one water and a half, five fields".
The northern part of Dabie Mountain is hilly, with an altitude of 150-850m, accounting for 17.8% of the whole area. There is the highest peak in Wuhan, Shuangfeng Peak (872.5 meters). The central part is a plain hilly area with an altitude of 30- 150m, accounting for 68.9% of the total area. The southern part is the plain lake area, which is below 30 meters above sea level, accounting for 13.3% of the total area.
What is the terrain like in Luoyang? Luoyang was called Luo Jing, Luoyang, Zhenzan, Luozhou and Yuzhou in ancient times. It is located in the west of Henan and the middle reaches of the Yellow River. It is named because it is located in the sun of Luohe. It is one of the first historical and cultural cities in the State Council, the hometown of Wei Bei, the birthplace of Han and Wei Dynasties, and an important industrial city in the central region. Luoyang has a history of more than 5000 years of civilization and 4000 years of city building [1]? And the capital history of 65,438+0,500 years, 65,438+0,005 emperors successively settled in Kyushu. It is one of the birthplaces of Chinese civilization and the Chinese nation. It is an important hub of the Grand Canal in Sui and Tang Dynasties. Peony is famous all over the world because of Luoyang, and is known as the "Millennium Imperial Capital, Peony Flower City".
Luoyang has successively won the honorary titles of China Excellent Tourist City, National Civilized City and China Top Ten Charming Cities. 20 14 Luoyang was selected as the national comprehensive pilot of new urbanization. [2]
What is the terrain like in Beijing? The center of Beijing is located at 39 degrees 54 minutes north latitude and 1 16 degrees 23 minutes east longitude. Located on the northwest edge of North China Plain. Beijing is adjacent to Tianjin and is surrounded by Hebei Province together with Tianjin. Beijing is surrounded by mountains in the west, north and northeast, and the Beijing Plain slowly inclines to the Bohai Sea in the southeast. The elevation of Beijing Plain is 20-60m, and the mountainous area is generally 1000- 1500m. Dongling Mountain, which borders Hebei, is 2309 meters above sea level and is the highest peak in Beijing. The territory flows through five major rivers, mainly Chaobai River and North Canal in the east, Yongding River and Juma River in the west. The terrain of Beijing is high in the northwest and low in the southeast. The western part is the Western Mountain of Taihang Mountain, and the northern part is Du Jun of Yanshan Mountain. The two mountains intersect at the south exit of Guangou, forming a semi-circular mountain bend that spreads to the southeast. People call it "Beijing bend", and the small plain it surrounds is the Beijing small plain. Look at the topography of Beijing, which is surrounded by mountains and seas, and the situation is magnificent. As the ancients said: "The land of Youzhou has the sea on the left, the Taihang Mountain on the right, the Yongjiang River in the north, the big river in the south and the land of abundance."
Urban area
The land area of Beijing is 164 1 1 square kilometer. Among them, the plain area is 6339 square kilometers, accounting for 38.6%. Mountain area 10072 km2, accounting for 6 1.4%. The urban area is 87. 1 km2.
geologic structure
Geologically, Beijing is located in the middle of North China-the west of Yanshan subsidence zone. In the long geological history, it not only experienced a great decline, but also accepted extremely thick deposits; There was a violent orogeny. Especially in Mesozoic, the orogeny dominated by Yanshan movement formed the embryonic form of geological structure skeleton and landform in Beijing area. With the development of crustal movement, fold deformation and faults are widely developed, and magmatic activity is also frequent. The fault structures in Beijing area are mainly in the northern mountainous areas: Gubeikou fault zone from Ying Shao and Huairou county to Miyun county, which is 33 kilometers long from east to west and 8 kilometers wide within the city boundary; The Jingbei fault zone on Qiangzi Road in Shachang, Miyun County is about 30 kilometers long, 20 kilometers wide and 200-300 meters wide at its widest point. There are Yanjiatai-Yanhecheng fault zone and Dongling mountain fault in Guantingxia area, which are tens of kilometers long. The edges of depressions and uplifts in plain areas are controlled by large faults, such as Huang Zhuang-Gao Liying fault and Yongledian-Mafang fault. Many smaller fault zones are often distributed between these large faults. The bends, bifurcations, ends and intersections of active fault zones, and places with fault basins are prone to earthquakes. The main active fault zones in Beijing area are: Pinggu-Sanhe fault zone; Babaoshan in Shijingshan District to Gao Liying Fault Zone in Shunyi District; Huailai County to Yanqing Fault Zone, Hebei Province; Sunhe fault zone from Nankou in Changping District to Chaoyang District. There have been great earthquakes in these areas in history, and they are areas with strong activities.
The lithologic conditions in Beijing area are complex, and all kinds of rocks (soils) are exposed, which can be roughly divided into two categories: loose deposits and hard rocks (bedrock). Loose deposits are mainly distributed in the piedmont plain, and their thickness gradually increases from several meters in piedmont to several hundred meters in southeast, mainly including various types of soil, sandy loam, sand and gravel. Hard rocks are mostly exposed in mountainous areas, mainly magmatic rocks (also known as igneous rocks), metamorphic rocks and sedimentary rocks.
The Mesozoic Yanshan movement formed the basic topographic pattern of Beijing: Xishan, Beishan and Southeast Plain. Mountains account for about 62% of the city's area, and plains account for about 38%. The main landform types are Zhongshan, low mountains, hills, plains and intermountain basins. There are more than 40 kinds of minerals with proven reserves, of which coal, iron and limestone are the most abundant, followed by marble, silica, granite and non-ferrous metals such as copper, zinc, lead, gold and silver. There are more than 200 rivers in Beijing, including Yongding River, Chaobai River, North Canal, Juma River and Yicuo River. Most of them belong to Haihe River system, which originates from the northwest mountainous area or Mongolian plateau, meanders southeast on the plain, then flows into Haihe River and then into Bohai Sea. Water resources are relatively poor, mainly from surface runoff and groundwater, with a total amount of about 4.2 billion cubic meters. There are Guanting Reservoir, Miyun Reservoir, Huairou Reservoir, Haizi Reservoir and other water conservancy facilities. Generally, the soil is vertically distributed, from top to bottom, it is mountain meadow soil-mountain brown soil-mountain cinnamon soil; The soil in the plain is horizontally distributed, and from the foothills to the plain, it is cinnamon soil-carbonate cinnamon soil, tidal soil and swamp soil in turn; Some low-lying areas have saline soil, and there are paddy soil and vegetable garden soil in the suburbs. There are many kinds of plants, with fungi, grasses, beans, roses and other families as the dominant species. The original forest vegetation is deciduous broad-leaved forest in the north temperate zone, which has been destroyed. The forest land is dominated by natural secondary forests and artificial forests, and the communities are dominated by pine-oak forests, poplar-birch forests, miscellaneous forests and shrubs, fruit forests and economic forests. There are 40 species of wild animals, 200 species of birds, 0/6 species of reptiles, 7 species of amphibians and 65 species of fish.