The content of Ankang geographical location

Ankang City is located in the southeast of Shaanxi Province, bordering Qinling Mountains in the north and Bashan Mountain in the south. Hanshui River flows east and west, with the valley basin (Ankang Basin) in the middle, with an area of 3142' ~ 33 49' north latitude and 0/0801'~18 east longitude. Jurisdiction 1 district 9 counties. Ankang is located in the hinterland of Qinba and on the bank of the Han River, and is known as the "Xi 'an Back Garden". I want to share some information about the geographical location of Ankang with you, hoping it will help you.

I. Geographical environment

Geographical location: Ankang is located in the hinterland of the motherland, in the southeast of Shaanxi Province, at the junction of Sichuan, Shaanxi, Hubei and Chongqing provinces, with east longitude10800' 58 "~11012' north latitude 3 1 42' 24. It is adjacent to Zhuxi County and Zhushan County in Hubei Province in the southeast, Wuxi County in Chongqing in the south, Chengkou County in Chongqing and Wanyuan City in Sichuan Province in the southwest, zhenba county, xixiang County and Yangxian County in Hanzhong City in the west, Foping County in Hanzhong City and zhouzhi county in xi City in the northwest, Huxian County and Chang 'an District in Xi City in the north and Zhashui County and Zhen 'an County in Shangluo City in the northeast.

Ankang has a total area of 23,529 square kilometers, the maximum distance between east and west is 250. 1 km, and the maximum distance between north and south is 236.2 km. Among them, the land is 23 130.44 square kilometers, accounting for 98. %; The water area is 398.6 square kilometers, accounting for 1.7%. The population density is 1 15 people per square kilometer. Among them, the total cultivated land area is 380,094 hectares, the common cultivated land area is 19 1478 hectares, the woodland area is1658,496 hectares, the forest coverage rate is 59.9%, the barren hills and wasteland is 9 169 1 hectare, and the water area is 3,986.

topography

Ankang belongs to the south of Qinling geosyncline fold system and the northeast margin of Hannan ancient land in the north of Yangtze paraplatform, which are composed of east-west Qinling geosyncline fold belt and northwest Dabashan arc fold belt respectively. It has the characteristics of north-south connection and east-west transition. Ankang is divided into two regions by the Han River, namely Qinling Mountains in the north and Daba Mountain in the south, with Hanshui-Chihe-Yuehe-Hanshui as the dividing line between Qinling Mountains and Daba Mountain. Its topographical features are mountains in the north and south, and valleys and basins in the middle. The landform of the whole city can be divided into six types: subalpine, Zhongshan, low mountain, wide valley basin, karst landform and mountain ancient glacier landform. In the land area of this city, Daba Mountain accounts for about 60% and Qinling Mountain accounts for about 40%. The mountainous area accounts for 92.5%, the hilly area accounts for 5.7%, and the Sichuan Road Pingba accounts for 1.8%. The right bank of the Hanjiang River at the junction of Baihe County and Hubei Province has the lowest elevation (elevation170m), and Dongling of Qinling Mountain has the highest elevation (elevation 2964.6m). The main peak of the Qinling Mountains traverses the north, with an altitude of about 2,500 meters. The main beam of Daba Mountain winds southward, generally at an altitude of about 2400 meters; Phoenix Mountain extends from west to east between Hanjiang Valley and Yuehe Road, forming the topographic outline of "three mountains and two rivers". The average elevation of Hanjiang Valley is about 370 meters. The height difference between the main ridges of Qinling Mountain and Daba Mountain and the Hanjiang River Valley is more than 2000 meters. The main mountain ranges in the territory are Liang Dong, Pingliang River, Yangshan at the southern foot of Qinling Mountain and Hualong Mountain, Fenghuang Mountain and Bijia Mountain in Daba Mountain. Hongxing Village, Niutoudian, Zhenping, the highest point in the territory, is 29 12 meters above sea level, and the right bank of Hanjiang exit in Baihe County, the lowest point, is 168.6 meters above sea level.

Ankang has a subtropical continental monsoon climate with four distinct seasons, abundant rainfall and a long frost-free period. It is characterized by cold and little rain in winter, rainy and dry in summer, warm and dry in spring and cool, humid and even rainy in autumn. Annual average temperature 15℃ ~ 17℃, 1 monthly average temperature 3℃ ~ 4℃, extreme minimum temperature-16.4℃ (1991year, 65438+. The average temperature in July is 22℃ ~ 26℃, and the extreme maximum temperature is 42.6℃ (1962 July 14 Baihe County). The monthly average minimum temperature is 3.5℃( 1977 1 month) and the monthly average maximum temperature is 26.9℃ (1August 967). The annual average temperature is 22℃ ~ 24.8℃, and the maximum daily range is 36.8℃ (1April 1969). The vertical climate is obvious, and the geographical distribution of temperature is quite different. Generally, the hilly area of Sichuan Road 15 ~ 16℃, and the mountainous area of Qinba 12 ~ 13℃. The average annual growth period is 290 days, and the average annual frost-free period is 253 days, the longest is 280 days, and the shortest is 2 10 days. The annual average sunshine hours are 16 10 hour, and the annual total radiation is 106 kcal/cm2. The duration above 0℃ is 320 days (generally from February 10 to February 20th of the following year). The average annual precipitation is1.050mm, and the average annual rainfall days are 94 days, with the maximum of 1.45 days (1.974) and the minimum of 68 days (1.972). Extreme annual maximum rainfall 1240mm (2003) and extreme annual minimum rainfall of 450mm (1966). Rainfall is concentrated from June to September every year, with the most in July.

Two. natural resource

land resources

Ankang has a total area of 23,534.5 square kilometers. Among them, the land is 23 130.44 square kilometers, accounting for 98. %; The water area is 398.6 square kilometers, accounting for 1.7%. The population density is 1 15 people per square kilometer. Among them, the total cultivated land area is 380,094 hectares, the common cultivated land area is 19 1478 hectares, the woodland area is1658,496 hectares, the forest coverage rate is 56.5%, the barren hills and wasteland is 9 169 1 hectare, and the water area is 3,986.

mineral resources

There are 65 kinds of proven and discovered mineral resources in Ankang, and 32 kinds of proven reserves. Among them, the top minerals in Shaanxi and China are gold mine, mercury mine, witherite, slate, barite, antimony mine, zinc mine and natural rare mineral water. [2 1] In addition, there are 28 limestone mines for cement in Ankang, with a reserve of 244.07 million tons. Rutile was found in two places, with proven reserves of 750,000 tons; Five pyrite deposits have been proved, including 33.48 million tons of Pingli Fenghuangjian pyrite and associated cobalt 4 1 and 4 1 ton. Titanium magnetite has been proved in many places, with a reserve of about 400 million tons; The proven reserves of talc, realgar, molybdenum, marble for glass and decoration, turquoise, stone coal and other minerals.

Three. nation

Ankang is a mixed area of ethnic minorities. There are 23 nationalities in this city. By the end of 20 14, the permanent population of the city at the end of the year was 2.642 million, with a birth rate of 9.96‰ and a self-increasing rate of 2.72‰. The total population is mainly Han nationality, accounting for 99% of the total population. Ethnic minorities include Hui, Manchu, Mongolian, Tujia, Zhuang, Miao, Tibetan, Yi, Buyi, Korean, Dong, Bai, Li, She, Dongxiang, Naxi, Xibo, Jing, Pumi, Russian, Tu and Lisu. Among the 22 ethnic minorities, the Hui nationality has the largest population, with about 27,500 people, more than 300 Manchu and more than 200 Mongolian. Other ethnic minorities are generally around 100, and some are few or even only a few. Ethnic minorities are distributed in 10 counties and districts of the city. Among them, there are about10.4 million people in Hanbin District, accounting for 60% of the city's ethnic minority population, and there are many ethnic minorities in Ningshan, Ziyang and Xunyang, all accounting for about 10%. There are/kloc-0 townships where ethnic minorities live in compact communities (accounting for more than 30% of the total population), namely, Hui Township in Jiangkou, ningshan county; There are 1 sub-district offices, namely the old town office in Hanbin District.

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