What is the main terrain of Anshan?

Topography The topographical features of Anshan City are high in the southeast, low in the northwest, and inclined from southeast to northwest. The southeast is a mountainous area extending from the Qian Shan Mountains, generally 300-600 meters above sea level; The highest is Maokui Mountain in Xiuyan, with an altitude of 1 14 1m, followed by a tree ridge in Haicheng. The main peak in the mountainous area is 93 1 m above sea level and covers an area of about 527 1.44 square kilometers, accounting for 56.97% of the total area of the city. The central part is the transition zone from the Qianshan Mountains to the western alluvial plain, which belongs to the hilly area with low slope, with an altitude of 100-200m and an area of about 1232.56 square kilometers, accounting for 13.32% of the total area of the city. To the west of the Chang (Chun)-Da (Lian) Railway are the alluvial plains of Liaohe River, Hunhe River and Taizi River, with an altitude of 5-20m. The lowest elevation in the city is Tang Yang Village, taian county, which is only 2 meters above sea level. The plain area is about 2748.4256 square kilometers, accounting for 29.7 1% of the total area of the city. Water System There are more than 40 large and small rivers in Anshan. Among them, the larger rivers are Liaohe River, Hunhe River, Taizi River, Dayang River and Shaozi River. The first three rivers are transit rivers, and the last two rivers are in Xiuyan Manchu Autonomous County. Liaohe River is one of the seven major rivers in China, and it is also the largest river flowing through Anshan City. The river enters from Da Lian, Xifo Town, taian county, exits from Shaozi Town, Xinhua Farm, and enters Bohai Sea via Panshan County. In Taian, the river is 70 kilometers long, with an average width of 200 meters and a drainage area of 898 square kilometers. In taian county, there is also the boundary river between taian county and Heishan County, and the Liaohe River and Xiaoliuhe River outside the boundary river between taian county and Dawa County are all tributaries of Liaohe River. Hunhe River originates from Gunmaling, a branch of Changbai Mountain in Qingyuan County, Liaoning Province, and flows through Fushun, Liaozhong, Liaoyang and other cities and counties. It enters Chaoyangbao Village, Huangshatuo Town, taian county, flows southwest to Sancha River, Xisi Town, Haicheng City, where it joins the Taizi River, and Shangkou enters the Bohai Sea. This river is the boundary between Haicheng and taian county. Anshan River is 67.6 kilometers long, including 3 1.6 kilometers in Haicheng section and 36 kilometers in Taian section, with an average river width of 140 meters and a drainage area of 3 107 square kilometers. Taizi River flows into Gaotuozi Town, a city in the sea through Tangmazhai, Liaoyang County, and flows from northeast to southwest to Xisi Town to join Hunhe River. This river is a big river in the western plain of Haicheng, with a length of 34.7 kilometers, an average width of 123- 150 meters and a drainage area of 3009.8 square kilometers. The Haicheng River, Wudao River and Santong River, which originated from Haicheng, originated from Shahe River, Nanshahe River, Yangliuhe River and Liangyun River in Anshan City, and all flowed into Taizi River. Dayang River is one of the two inland rivers in Xiuyan Manchu Autonomous County. Originated in the south of a tree in Pianling Township, Xiuyan County, it flows from northwest to southeast and is called Pianling River. In the process of going south, hadad river, Tang Chi River, Duck River, Niuhe River, Goulian River, etc. The territory flows into Shaozihe River in the east of Shaozihe Street in Shaozihe Township, leaving the country through Dongshantou, Wang Jiagou and Maling Village, and entering the Yellow Sea in donggang city. The life flow is 180.2km, and the drainage area is1968.4km2. Shaozi River is another major river in Xiuyan Manchu Autonomous County. The positive source is at the fork of North Heibei District, huashan village, Sanjiazi Township, and the lateral source is Hujialing, northwest of huashan village. These two sources meet at Mount Wang Jiadong, which is called Shaozi River. The length of the river reaches 17 1.85km, and the drainage area is 2 155.03km2 ... Its tributaries include Muniu River, Shimiaozi River, Qinghe River and Gudong River. Climate type Anshan city is located in the southeast edge of Songliao plain in the middle latitude and belongs to temperate monsoon climate zone. The main climatic characteristics are: four distinct seasons, rain and heat in the same period, dry and cold in the same season, abundant precipitation, suitable temperature and sufficient sunshine, and disastrous weather such as gale, hail, drought, flood and frost occurs in different degrees in different years and seasons. In spring (March-May), there are many strong winds, less precipitation, long sunshine, quick recovery, large evaporation and low humidity. In summer (June-August), there is a lot of precipitation and concentration, and heavy rain mostly occurs in this season, with high temperature but less heat; In autumn (September-165438+1October), the weather is crisp, the rainfall drops sharply and the temperature drops sharply; In winter (65438+February-February of the following year), there is less snow and more north wind, which is dry and cold. Although the area under the jurisdiction of Anshan belongs to the same climate zone, there are differences due to different geographical environments (topography, landforms, distance from the sea). The annual precipitation is 640-880mm, which gradually decreases from southeast to northwest. The average annual temperature in the plain area is 8.0-9.0℃, and the average annual temperature in the eastern and southeastern mountainous areas is 6.3-7.0℃. The sunshine hours are 2350-2700 hours on average in several years, and the northwest is more than the southeast. Mineral resources There are 35 kinds of proven mineral resources in Anshan. The most abundant reserves are iron, magnesite, talc, jade, marble, limestone, granite and boron. The proven reserves of iron ore are 654.38+0.8 billion tons, ranking first in China. Mainly distributed around Anshan city and Gongchangling in Liaoyang city. Except a few small and medium-sized iron mines distributed in Haicheng and Xiuyan, the large iron mines such as Dong 'anshan, Dagushan, Qidashan, Qian Qian Mountain and Gongchangling are all mined by the state. Magnesite is mainly distributed in the eastern mountainous areas of Haicheng and Xiuyan. The proven reserves are 2.3 billion tons, which is also the first in China, accounting for 1/4 of the world's reserves, with excellent texture and grade. Large-scale mines include Liaoning Coal Company, Huaziyu Magnesium Mine, Yaolingzi Magnesium Mine and township enterprises such as Yingluo, Pailou and Bali. Xiuyan is mainly mined in Pianling and Sanjiazi. Talc minerals are mainly distributed in Haicheng and Xiuyan. The proven reserves are 60 million tons. Haicheng talc mine, located in Fanjiabaozi, Ma Feng Town, Haicheng City, is mined by the state, and the rest are mined by township enterprises. The talc in Haicheng and Xiuyan enjoys a high reputation in the international market because of its white purity and low impurities such as iron and calcium. Jade minerals are mostly distributed in Xiuyan. Xiuyan is known as the "hometown of jade". A small amount is distributed in Gushan Town, Haicheng. Xiuyan jade stone has a proven reserve of 2.06 million tons and an annual mining capacity of about 2,500 tons, making it the largest jade producing area in China. In addition to the jade carving factories and shops in the county, Xiuyan jade stone is also supplied to more than 70 jade carving factories in 22 provinces across the country for processing. Xiuyan jade is exquisite and pure in texture and colorful, including green, yellow, black, red and white. Xiuyan jade carving products are one of the main products exported by Dalian Port. Marble, mainly produced in Xiuyan and Haicheng, has huge reserves. Marbles in the two places are colorful, including red, yellow, black, white and green, which are the treasures of advanced building materials. Limestone is mainly distributed in Xiuyan and the eastern mountainous area of Haicheng, and also distributed in Tangjiafang and Dagushan Township of qianshan district, with considerable reserves. Limestone in the above areas has good texture and stable grade, with calcium content of 53%, which is a good raw material for cement production. Granite, mainly produced in Xiuyan Manchu Autonomous County, has a reserve of over 20 billion tons. Among them, black granite, after being cut into plates, is simple, elegant and unique, and is known as the "king of stones". Other mineral and metal deposits include lead-zinc mine, copper mine, nickel-cobalt mine, gold mine and pyrite mine; Non-metallic minerals include silica minerals, phosphate rocks, asbestos, fluorite, vermiculite, muscovite, barite, boron minerals, clay minerals, graphite, coal and petroleum.