Dangshan county is located in the northernmost part of Anhui province, at the junction of seven counties in Jiangsu, Shandong, Henan and Anhui provinces; It borders Xiaoxian County in the east, and borders yongcheng city, Xiayi County and Yucheng County in the southeast, south, southwest and west respectively. Shan County, Shandong Province in the northwest, Feng County, Jiangsu Province in the northeast. The county is located at 3416' ~ 34 39' north latitude and16 29' ~16 38' east longitude. Longhai Railway and National Highway 3 10 run through the whole territory, while National Roads Beijing-Kowloon, beijing-shanghai railway, 105 and 206 pass through the territory. The old course of the Hundred Miles Yellow River runs across it. The county seat is 84 kilometers east of the historic city Xuzhou and 72 kilometers west of the ancient capital Shangqiu. Mangdang Mountain stands in front and the Yellow River is behind. In ancient times, it was the gateway of Bianjing Tooth Lip and Xuhuai, and was known as the thoroughfare of Kyushu and the crossroads of the world. It is the only channel connecting the Eurasian Continental Bridge in Anhui Province.
There are ***386 administrative villages in the county, with a total area of 1 193 square kilometers, a total population of 940,000, cultivated land1270,000 mu, and fruit area of more than 700,000 mu, accounting for 55% of the county's cultivated land.
County People's Government is located in Dangzhen with postal code of 235300. Administrative division code: 34 132 1. Area code: 0557. In 2000, Dangshan county administered 14 towns and 5 townships. The total population is 862356 (according to the data of the fifth census; Unit: Person) In 2004, the number of villages and towns in Dangshan County was adjusted from 19 to 18, Longhai Township was abolished, merged into Chengguan Town and renamed as Dangshan Town. By the end of 2004, Dangshan County had 14 towns, 4 townships, 10 neighborhood committees and 382 village committees. From June, 5438 to February, 2007, Dangshan County adjusted the township administrative divisions: Southwest Gate Town, Wenzhuang Town, Liu Anlou Township, Huanglou Township, Quanji Township and Zhaotun Township were abolished, and six towns were adjusted, while seven towns were reserved. After adjustment, the county is 13 town and 1 development zone.
Population and nationality
As of June 5438+February 2007, there were 26.56 households with a total population of 955,422. Among them, there are 488,379 males and 467,043 females. The non-agricultural population of the county is106,000.
From 2005 to 2007, the population of Dangshan County included Han nationality, Hui nationality, Miao nationality, Dong nationality, Zhuang nationality, Tibetan nationality, Buyi nationality, Tujia nationality, Dulong nationality, Bai nationality, Korean nationality, Hani nationality, Mongolian nationality, Manchu nationality, Hezhe nationality, Ewenki nationality, Uygur nationality, She nationality, Tu nationality, Qiang nationality and Lahu nationality. Among them, the Han nationality accounts for about 98.9% of the total population; Hui nationality accounts for 1. 1% of the total population, and ethnic minorities account for 99%.
Geomorphologic geology
Dangshan County is flat and alluvial from the Yellow River, with a slightly higher central part and a slightly lower north-south part. The old course of the Yellow River is 47.8 meters high in the north and 44 meters high in the south. The highest point in the northwest of the county is 54.8 meters and the lowest point in the southeast is 40.4 meters. Due to the repeated flooding and diversion of the Yellow River, the small and medium-sized topography fluctuates, and hills, slopes and depressions alternate. This landform change of micro-topography redistributes water and salt, forming five landform types in Dangshan County: abandoned Yellow River high beach, crevasse fan, flat slope, shallow flat depression and back river depression. Dangshan county is located in Xubang depression zone of Shandong platform anticline, where huge Quaternary strata are deposited, and its thickness gradually increases from east to west. In Chengzhuang, Wang Wan, Chen Zhuang and Guandi Temple in the south of the county, the thickness of Quaternary system is 318.15m ~ 456.77m. The underlying bedrock is Paleozoic Permian sandstone shale. Drilling in Wangzhuang, 4 miles south of Dangcheng, didn't cross the Quaternary stratum until 500 meters.
hydroclimate
Dangshan county is located in two major water systems, the new Bianhe River and Nansihu Lake, both of which belong to the Huaihe River Basin. The south dike of Laohuanghe River is the watershed of the two major water systems, bordering Nansihu River system in the north, with a drainage area of 440.3 square kilometers, accounting for 36.9% of the county's total area. The main rivers are the Old Yellow River and Fuxin River. To the south is the new Bianhe River system, with a drainage area of 752.84 square kilometers, accounting for 63. 1% of the total area of the county. The main rivers are Dasha River, Ba Qinghe, Limin River, Donghong River and Wenjia River.
The main source of surface water in Dangshan County is atmospheric precipitation. The county's total precipitation is1341000000 cubic meters in wet years, 932 million cubic meters in normal years and 628 million cubic meters in dry years, and the average precipitation for many years is 951000000 cubic meters. The rivers in Dangshan county are all intermittent rivers with rain sources, and the surface water runoff changes greatly during the year and is unevenly distributed during the year. Most of the precipitation is concentrated in the flood season, and the rainfall from June to September accounts for 67% of the annual rainfall. The annual average runoff depth is 92.5 mm, and the annual average runoff amount is 1. 1 100 million cubic meters; The maximum runoff depth is (1963)373.3mm, and the annual runoff is 445 million cubic meters. The minimum annual runoff depth is 16.2 mm, and the annual runoff is 0.1900 million cubic meters. In normal years, the county's surface water storage capacity is 48.295 million cubic meters.
The groundwater in Dangshan county belongs to pervaporation mining type. The main source is the infiltration of atmospheric precipitation, and the lateral recharge and overflow recharge are weak. Pore water is within the exposure depth. According to the burial conditions and hydraulic properties, it can be divided into 0-50m shallow porous water-bearing rocks and 50m deep porous water-bearing rocks. According to the analysis of regional groundwater monitoring data, the hydraulic connection between the two groups is weak. According to the accumulation degree of sand layers (fine sand, silt and clayey silt) in exploration boreholes, the water-rich areas are divided into three types: water-rich areas, medium water-rich areas and water-poor areas. The average annual groundwater resources in the county are 20 1 10,000 cubic meters, and the exploitable modulus is168,400 cubic meters/square kilometer.
Dangshan County is located in the south of Huang-Huai-Hai Plain, with a climate between warm temperate zone and north subtropical zone, belonging to monsoon semi-humid climate zone. Annual average temperature14.1℃ (1955-2000), extreme maximum temperature 4 1.6℃( 1966), extreme minimum temperature-19.9℃. The annual average precipitation is 743.3mm, the maximum precipitation is1333.4mm (in 2003) and the minimum precipitation is 415.0mm (1966); The annual sunshine hours are 22 19. 1 hour. The most frequent winds in four seasons: northerly winds in autumn and winter; Spring and summer are easterly winds. The annual frost-free period is 20 1 day. Main meteorological disasters: drought, flood, frost, strong wind, hail and fog affect agricultural production.
202 1, 1, in 2020, the ranking of influential counties in rural revitalization communication was released, and Dangshan County ranked 293rd.
20211The list of health cities (counties, districts and towns) in Anhui Province was released in 2020, and Dangshan County was on the list.
202 1 1, the Ministry of Agriculture and Rural Affairs recommended Dangshan County as the third batch of national rural entrepreneurial innovation typical counties.
From June 20438 to October 2020 10, Dangshan county was selected as the first batch of national digital village pilot areas.
In August, 2020, the Ministry of Agriculture and Rural Affairs selected Dangshan County as the pilot county of "internet plus" agricultural products leaving the village and entering the city.
In July, 2020, the list of advantageous regions of characteristic agricultural products in Anhui Province (the third batch) was released, and Dangshan Huangtao characteristic agricultural products in Dangshan County were on the list.
In June 2020, Dangshan County was included in the list of the second batch of revolutionary cultural relics protection and utilization counties (Huaibei area).
In May 2020, Dangshan County was included in the demonstration list of "one county, one industry (specialized)" in Anhui Province, with crisp pear as the leading industry.
In April 2020, Dangshan County was included in the list of the fifth batch of civilized counties in Anhui Province.
In March, 2020, Dangshan County was rated as the first batch of national "green prevention and control demonstration counties" for crop diseases and insect pests.
June 5438 +20201October, the Ministry of Housing and Urban-Rural Development named Dangshan County as the National Garden County in 20 19.
20 19- 10, Dangshan county was named "the second batch of national agricultural product quality and safety counties" by the Ministry of Agriculture.
In August of 20 19, the list of comprehensive demonstration counties of rural e-commerce in 20 19 was released, and Dangshan county was on the list.
In February of 20 16, Dangshan county was included in the list of counties (cities, districts) with basically balanced development of compulsory education in China in 20 15.