Population density: 377 people/km2.

As early as the Neolithic Age, there were human activities in Dayi County today.

There are ancient Shu in summer and Zhou also. Today's Dayi county area is the land of ancient Shu.

In the fifth year of Shen Zhou, that is, the ninth year of Qin Hui (the first 3 16), Qin destroyed ancient Shu. Compared with the past and present, Dayi County was Lin Qiong County at that time.

In the fifth year of Emperor Gaozu (202 BC), Bashu was pacified. Today, the scope of Dayi County is Jiangyuan County and Lin Qiong County.

At the end of the Western Han Dynasty, Wang Mang was founded as a new country (9-23 years), Lin Qiong County was changed to Jianqiong County, and Jiangyuan County was changed to Qionglai County. After Gongsun Shu got married, he came to Shu (25-36). The names of Jianye and Qionglai counties remain unchanged.

In November of the 12th year of Jianwu in the Eastern Han Dynasty (36), he got married and died. Qiongyuan County was renamed Jiangyuan County and Jianye County was renamed Lin Qiong County.

Two years later (3 12), the area of Dayi County remained unchanged.

In the third year of Yonghe in the Eastern Jin Dynasty (347), he became a (Han) pawn. Hanyuan county was changed to Rong county, and later renamed Jiangyuan county. Lin Qiong county is still home.

During the Song and Qi Dynasties, before King Liang Wuling came to Shu, the organizational system of the two counties remained unchanged. At the end of Liang Dynasty, Xiao Ji, king of Wuling, lived in Shu (552-553). Lin Qiong County was changed to Yizheng County, and Jiangyuan County was retained.

In the second year of Liang Chengsheng (553), the Western Wei Dynasty ruled Sichuan. According to the county, some areas are located in Lin Qiong County, and Jiangyuan County is still located.

In the first year of Xiao Min in the Northern Zhou Dynasty, it was founded in 557. Jiangyuan County was changed to Duorong County, Hou Xian County and then to Jinyuan County. Yizheng County and Lin Qiong County are still there.

During the Sui Dynasty, Dayi County was today's Jinyuan, Lin Qiong and Yizheng counties.

In the first year of Tang Wude (6 18), Jinyuan County was placed under Tang Long County. In the third year of Wude (620), Anren County established Lin Qiong, Yizheng and Tang Long counties, in the seventeenth year of Zhenguan (643), Anren County was abolished, and Anren County was restored in the first year of Xianheng (670). When Dayi County was not established in the early Tang Dynasty, it belonged to Lin Qiong, Yizheng, Tang Long and Anren.

In 67 1 year (the second year of Tang Xianheng), Dayi County was located in the west of Jinyuan County.

Xiling Snow Mountain's Old Tang Books, New Tang Books, Yuanhe County Records and Taiping Wanguo Records contain: "Its city is vast, hence its name."

1284 (in the 21st year of Yuan Dynasty), Anren County and Huojing County were abolished, and their administrative areas were transferred to Dayi County. Huojing County was later placed under Qiongzhou.

After Dayi established the county, the organizational system in Tang and Song Dynasties remained unchanged.

1377 (the tenth year of Hongwu in the Ming Dynasty) In May of the lunar calendar, the establishment of Dayi was abolished and the territory was merged into Qiong County.

1380 (13th year of Ming Hongwu) was reset in November of the lunar calendar.

On July 1960, Xinjin County was merged into Dayi County with the approval of the State Council. The original Chengguan Town of Xinjin County was changed to Xinjin Town of Dayi County. 1March 25, 962, the organizational system was restored, and the jurisdiction of Xinjin County was still under the jurisdiction of Xinjin County. 10120, the State Council went through the examination and approval procedures. After the establishment of the county, Dayi County has been under the jurisdiction of Jinyuan Town.

Affiliation: Dayi County was founded in Qiongzhou. In the year of Tang Baoyuan (742), Qiongzhou was changed to Lin Qiong County. In the first year of Tang Dynasty (758), it was changed to Qiongzhou.

During the Five Dynasties and Ten Kingdoms period, Dayi County belonged to pre-Shu in 19 (907-926), post-Tang in 9 (925-933) and post-Shu in 32 (934-965).

In the third year of Gande in the Northern Song Dynasty (965), Dayi was returned to Song, Qiongzhou was changed to Lin Qiong County, Qiongzhou, and Dayi was transferred to Lin Qiong County, Qiongzhou.

In the sixth year of Bao _ in the Southern Song Dynasty (1258), the troops of the Mongolian Empire invaded Sichuan, Lin Qiong County of Li Qiongfu and Dayi. Shortly after the 14th year of Zhiyuan (1277), Lin Qiong County in Qiongzhou was changed to Qiongzhou. Dayi belongs to Qiongzhou. Sixteen years (1279). Dayi is a genus.

In the 20th year of Yuan Dynasty (1360), the Ming Dynasty established the peasant regime in Shu. In the 22nd year of Yuan Dynasty (1362), he proclaimed himself emperor, with the title of Xia, and Dayi belonged to Qiongzhou.

In the spring of the fourth year of Hongwu in Ming Dynasty (137 1), Zhu Yuanzhang sent troops to Sichuan. In June, Xiawu and Dayi belonged to the Ming Dynasty and Qiongzhou. In the ninth year of Hongwu in Ming Dynasty (1376), Qiongzhou was reduced to Qiongxian, and Dayi was placed under Jiading.

In May of the tenth year of Ming Hong (1377), Dayi entered Qiong County. In the 13th year of Minghong (1380), he moved his capital to Jiading House. In the 19th year of Chenghua in the Ming Dynasty (1483), Qiongxian was restored to Qiongzhou, and Dayi was transferred to Qiongzhou.

On the eighth day of August in the seventeenth year of Chongzhen in the Ming Dynasty, Chengdu, Zhang Jianli, the peasant regime of Daxi, made Chengdu its capital and called Xijing. And on the fifth day of October, he broke Qiongzhou and entered Dayi. During the period of Zhang Zhanshu (1644 to 1646), Dayi was one of the counties under the jurisdiction of Daxi, and its subordinate relationship was the same as that of the late Ming Dynasty.

In the third year of Shunzhi in Qing Dynasty (1646), Dayi returned to Qing Dynasty and was assigned to Qiongzhou. Zhang's subordinates still live in Chongqing, Xuzhou, Mahu, Qiongzhou and other places, which is recorded in the county annals of the sixth year of Dayi in Qianlong Edition (1649) in Qing Dynasty. In the ninth year of Shunzhi in Qing Dynasty (1652), Zhang, who joined forces with Nanming, sent troops back to Sichuan to defeat Wu Sangui and southern Sichuan counties that had been cleared. Liu Wenxiu, Chengdu. Around the ninth year of Shunzhi in Qing Dynasty, Dayi belonged to Nanming and Li Qiong. According to the Records of Dayi County in Guangxu Edition of Qing Dynasty, after the rebellion in Wu Sangui in the 13th year of Kangxi in Qing Dynasty (1674), its headquarters was owned by Wang Fan who captured Dayi in Qiongzhou. 1674, Wu proclaimed himself emperor, with the title of Zhou. Dayi belongs to Zhou, which belongs to Qiongzhou. In the 19th year of Emperor Kangxi of Qing Dynasty (1680), Wang Pingfan was leveled, and Dayi was returned to Qing Dynasty, and was placed in Qiongzhou.

In the first year of the Republic of China, Dayi was placed under Qiongzhou. In 2 years, Qiongzhou was changed to Qionglai County, and Dayi was placed under Sichuan South Road. On May 3rd, Shangchuan South Road was changed to Jianchang Road. 17, orthodoxy was abolished. At that time, Sichuan was in a melee between warlords, and it was not officially abolished until the following year. Dayi was then Zhili Sichuan Province. In June 2004, Dayi was placed under the fourth administrative supervision area of Sichuan Province.

1949 65438+February 20th, Dayi County was transferred to Meishan Administrative Region after liberation. From March 1950 to Wenjiang Administrative Region. Also known as Wenjiang area, 1968+00 was changed to Wenjiang area in June. 1May, 983, Wenjiang was abolished and Dayi County was placed under the jurisdiction of Chengdu.

Comprehensive strength

In 2005, the economic operation maintained a rapid growth momentum. According to preliminary accounting, the county's GDP reached 4,823.86 million yuan in 2005, an increase of 12.3% over the previous year. Among them, the added value of the primary industry120.497 million yuan, an increase of 8.5%; The added value of the secondary industry1754180,000 yuan, an increase of18.0%; The added value of tertiary industry was 1864765438+ 10,000 yuan, up by 9.5%. The contribution rates of the three industries to economic growth are 15.8%, 52. 1% and 32. 1% respectively, and the proportion of the primary, secondary and tertiary industries is 25.0:36.4:38.6.

The private economy developed rapidly, and the added value of the private economy in the county was 2414.07 million yuan, an increase of 16.6%. Among them, the added value of the primary industry was 497.25 million yuan, an increase of 38.4%; The added value of the secondary industry was 905.58 million yuan, an increase of17.0%; The added value of tertiary industry1011240,000 yuan, an increase of 9.6%. The proportion of private economy in GDP was 50.0%, up by 1.7 percentage points over the previous year.

Employment and re-employment have achieved results. At the end of the year, there were 283,765 employees in the county, including 39,694 urban employees. By the end of 2005, 4,664 new jobs had been created in cities and towns in the county, helping to guide 2,387 unemployed people to re-employment; There were 1394 laid-off workers from state-owned enterprises in the county, and the registered unemployment rate in cities and towns was 3.9% at the end of the year.

natural conditions

(1) Geological environment

Dayi County belongs to the western region of Yangtze Plate in the geotectonics of China. Located at the junction of Chengdu Plain and Longmen Mountain, it is a part of the eastern edge of the northeast structural belt of Longmen Mountain. Guan Peng fault runs through the middle of the county in a northeast-southwest direction along the line from Tianchepo to Xiling Town to Tangwangba. This line takes Xishan District as the front of the pre-Longmenshan nappe, and the eastern part is the foreland basin deposited by Cretaceous and above strata. The former was formed by the latter subducting westward along the Guan Peng fault.

Folds and faults are developed in mountainous areas of western China. The main folds are: Baoxing anticline, Qipengshan inversion anticline, Heishuihe syncline, Shitigou thrust syncline, Tangwangba syncline, Wuzhongshan syncline, Guankou syncline, Jinyuan Town syncline, Fenghuangshan syncline, Yinmaba syncline and other multi-level folds; The main faults are: Mozigou, Brass Tip, Shuanghe Thrust Fault, and Chuanxikou, Wangbagang and Jinling Temple Faults. The main rocks are: granite, pyroxenite, peridotite, purple sandstone, shale, acid-resistant rock, conglomerate and other rocks. The county is located in the tectonic active zone, and the geological structure is extremely complicated.

(2) Geomorphological environment

Dayi County is located at the front of the transition from Chengdu Plain to West Sichuan Plateau, and the west is the suture zone between Chengdu Plain and Longmenshan Uplift. Under the control of the above-mentioned geological structure, affected by the comprehensive action of unequal crustal fluctuation and flowing water cutting erosion, the territory has diverse landforms, with plains, hills, low mountains, Zhongshan, high mountains and extremely high mountains coexisting, forming steps from east to west respectively. Among them, plains account for 22.8%, hills account for 16.7%, and mountains account for 60.5%.

At the same time, the close-range position of the transition from the plain to the plateau has risen sharply in the west, resulting in a relatively high height in the territory. Miaojiling (University Hall), the highest peak in the northwest, is 5364 meters above sea level, while Yangjia Ancestral Hall, the lowest in the southeast, is only 475 meters above sea level, with a relative height difference of 4889 meters. The western mountainous area has broken landforms, criss-crossing ravines, continuous mountains, towering peaks and beautiful scenery. The snow area of Xiling Snow Mountain at mid-latitude and low altitude is a great spectacle.

(3) Climate and environment

Dayi County is located in the subtropical humid monsoon climate zone, with warm and humid climate, abundant heat, abundant precipitation, no heat in summer, no cold in winter and distinct seasons, which is very suitable for the development of all-weather four-season tourism. The annual average temperature in China is 16.0oc (Pingba District), 5.5oc in June and 26. 1oc in July, with the extreme minimum temperature of -4.8oc and the extreme maximum temperature of 35. 1oc. The average frost-free period for many years is 284 days. The annual average precipitation is1098.2mm. ..

The ground elevation in Dayi County varies greatly, and the temperature decreases with the elevation. The average temperatures in hills and mountains are 12oc- 15co and 1 1.4co, respectively. The annual precipitation increases with the elevation, and the average precipitation in plain, hilly and mountainous areas is 1095.5mm, 1 156.3mm and 1268.8mm respectively. Precipitation is mostly concentrated in July and August, accounting for 46.3% of the annual precipitation (Pingba area). The average annual sunshine hours in Pingba, hilly and mountainous areas are 1033.8 hours, 744.4 hours and 683.7 hours respectively. With the change of mountain altitude, there is often a vertical change of biological climate of "one mountain with four seasons and ten miles of different days".

(4) Biological characteristics

The warm and humid climate conditions make this land more suitable. At the same time, the life and ecological factors of light and hot water are influenced by complex and changeable landforms, which leads to the ever-changing combination and configuration of light and hot water factors in different landforms and geographical areas, thus forming a variety of natural ecological environment types, which has obvious biodiversity advantages. According to the existing investigation results, there are more than 8600 species of plants belonging to 226 families 1527 genera and 36 families of vertebrates in Dayi county. Among them, there are many rare animals and plants under special state protection, such as ancient plants called living fossils, such as ginkgo biloba, Davidia involucrata, Metasequoia glyptostroboides and rare animals, such as giant pandas and golden monkeys. It can be said that Dayi County is an important gene bank of species resources and an excellent base for biological and geographical research and education.

At the same time, with the change of light and hot water climate factors with altitude, the vertical distribution of plants in Dayi County is obvious. The zonal base-band vegetation in Dayi County is subtropical evergreen broad-leaved forest. The vertical zonation spectrum of vegetation from low to high is: evergreen broad-leaved forest (altitude geographical position

Dayi County is located in the west of Chengdu Plain, 48km away from Chengdu downtown, with the ground span from102 59 ′ to103 45 ′ and the north latitude from 30 25 ′ to 30 49 ′. It is bounded by chongzhou city in the northeast, Qionglai City in the south, Xinjin County in the southeast and Lushan County, Baoxing County and Wenchuan County in the northwest.

city construction

In 2005, remarkable achievements were made in urban construction. The overall appearance of the urban area has improved. Jinyuan Town, a new urban area, adopts the way of market-oriented allocation of resources, and newly introduces eight real estate projects, including Yindu Real Estate, Tianyi Garden and Oriental Holy Land, with a capital of 65.438+65 billion yuan and an inventory of more than 500 mu of land. The infrastructure construction of water, electricity, gas, roads, communication and sewage was improved in the first phase of the industrial concentration area, and the infrastructure construction was started in the second phase. Comprehensive urban management has been strengthened. The integrity rate of municipal facilities is 95%, the urban greening rate is 32%, the green space coverage rate is 34%, and the per capita public green space is 8.6 square meters. At the end of the year, the length of urban paved roads was 69.78 kilometers, and the paved road area was1429,000 square meters.

infrastructure

Dayi's infrastructure has entered the advanced ranks in the west, with complete water, electricity, gas, roads and communication facilities, and a modern landscape tourist city suitable for enterprise development and home life has begun to take shape. The county has sufficient water, electricity and gas supply, large surplus and favorable prices. In terms of power supply, Dayi is not only connected to the provincial power grid, but also a large TV production county with sufficient self-provided power supply. In communication, wireless, wired and broadband networks cover the whole county. In terms of transportation, the county seat is 48 kilometers away from Chengdu and has entered the "half-hour economic circle" of Chengdu; 35km from Shuangliu International Airport; High-grade highways such as West Sichuan Tourism Ring Road, Dashuang Tourism Expressway and Chulin New Tourism Double Line run through the whole territory; Villages and towns have access to cement roads, and basically every village has access to cement roads.

Modern industry

Industrial production increased rapidly in 2005. The county's industrial added value reached 13 1.88 million yuan, an increase of 1.5. 1% over the previous year, and its contribution rate to economic growth reached 34.0%, ranking first in all industries. Among them, the added value of industrial enterprises above designated size was 700.88 million yuan, an increase of 24.0%. The output of major industrial products has increased rapidly, and the connection between production and sales is good. The annual sales rate of industrial enterprises' products was 95.6%. The quality and efficiency of industrial economic operation have been improved. In the whole year, enterprises above designated size realized product sales income of 210.36 billion yuan, an increase of 210.9%; The total profit and tax was 20 1 10,000 yuan, up 6. 1% year-on-year. There are 7 enterprises with annual sales income exceeding 100 million yuan and 3 enterprises with total profits and taxes exceeding 10 million yuan. The comprehensive economic benefit index reached 109.3%, of which the contribution rate of total assets was 7.7%, the rate of capital preservation and appreciation was 127.3%, the asset-liability ratio was 55.5%, and the labor productivity of all employees was 42 168 yuan/person.

The pace of development of industrial concentration areas has accelerated. There are 39 enterprises put into production in the industrial concentrated development zone, including enterprises above designated size 17; Enterprises in industrial concentrated development zones realized industrial added value of 389.69 million yuan, of which enterprises above designated size realized industrial added value of 364.65 million yuan, an increase of 20.8%. The concentration of industrial concentrated development zones reached 52.0%. Enterprises above designated size in industrial concentrated development zones realized profits of 46.23 million yuan and warehousing taxes of 602 1 10,000 yuan, an increase of 42.7%.

With the increase of industrial investment, high-tech industries are developing well. The county completed industrial investment of1150.36 million yuan, up by 57. 1% over the previous year, and the proportion of industrial investment in fixed assets investment was 53.9%, up by 3.9 percentage points over the previous year. The investment in industrial technological transformation was 657.63 million yuan, an increase of 79.5%. Industrial enterprises above designated size realized the output value of new products of 84 1, 1, 000 yuan. There are 9 high-tech enterprises in the county, achieving a total industrial output value of 475 million yuan, and the output value of high-tech enterprises accounts for more than 25% of the total industrial output value above designated size.

modern agriculture

In 2005, the county's agricultural production developed steadily. According to preliminary statistics, the total agricultural output value reached 2,033.24 million yuan, a year-on-year increase of 14.2%. Among them, the output value of planting industry is 779.94 million yuan, and the output value of animal husbandry is1136.26 million yuan. The county's grain planting area is 55 1435 mu, a decrease of 47,439 mu over the previous year, and the oil planting area is1/0350 mu, an increase of 1608 mu over the previous year. The agricultural production structure was further adjusted, and the proportion of planting decreased from 44.4% in the previous year to 38.4%, and the proportion of animal husbandry increased from 50.0% in the previous year to 55.9%. The ratio of sown area of grain to sown area of various cash crops changed from 65.4:34.6 in the previous year to 62.3:37.7. The total grain output was 205,720 tons, down12.8%; Total oil output13,864 tons, down by 5.3%; The total output of edible fungi was 42,873 tons, an increase of 2.7%; The output of medicinal materials is 429 tons; The total output of meat was 88,603 tons, an increase of 34.3%; Cocoon output is 390 tons; The output of aquatic products was 5,800 tons, up by 10.3%. The level of industrialized operation has been continuously improved. The advantages of industrialization of edible fungi and pickled mustard tuber are outstanding. The planting area of edible fungi in the county is 209 19 mu, and the planting area of pickled mustard tuber is 30,000 mu. Nearly 654.38 million farmers are engaged in agricultural industrialization, with an output value of 850 million yuan.

Agricultural production conditions continued to improve. The effective irrigation area at the end of the year is 204 14 hectare. The annual rural electricity consumption reached 2.221.5 million kwh, an increase of 1.4% over the previous year. At the end of the year, the total power of agricultural machinery was 6.5438+0.3 million kilowatts, with 683 large and medium tractors and 336 agricultural trucks.

service industry

In 2005, the construction of traffic facilities in county towns was continuously strengthened. At the end of the year, the highway mileage in the county reached 168 1 km, including expressway 18.43 km; There are cars in 0/00% villages in the county/KLOC. 200 1 year newly rebuilt highway124.8km. At the end of the year, there were 2 169 cars in the county, including 507 buses and 562 trucks. In the whole year, the turnover of road freight was 30010.4 million ton-km, an increase of10.4%, and the turnover of road passenger transport was 224.83 million person-km.

Posts and telecommunications continued to develop. 200 1 year, the total post and telecommunications business199.7 million yuan, an increase of 2.8% over the previous year. Telephone users in the county 10 1582, an increase of 15.5%, including 32,235 urban residential telephone users, 47,300 rural residential telephone users and PHS users 158 10. At the end of the year, the number of mobile phone users reached 1 18000, and the number of Internet users was 4 150.

Tourism has developed rapidly. In the whole year, it received 2,452,500 domestic tourists, an increase of15.9% over the previous year; Domestic tourism revenue was 377 million yuan, up by171%; Per capita tourism expenditure 153.7 yuan, increasing by 1.5 yuan. In the whole year, it received 4538 overseas tourists, an increase of 7.4%; Tourism foreign exchange income was 7310.5 million USD, up by 7.8%. Tourist reception facilities have been further improved. At the end of the year, the number of star-rated hotels was 1, and the total number of star-rated hotel rooms was 1 10. 1 travel agency.

Social undertakings

In 2005, health services were further promoted. Six township health centers were renovated in the whole year, with a total investment of 3.9 million yuan, an increase of 17 1.4% over the previous year. The participation rate of the new rural cooperative medical system is 98%, and the participation rate of primary and secondary school students and infants is 80%. The prevention and control of schistosomiasis reached the national schistosomiasis transmission control standard one year ahead of schedule. The achievements of rural drug centralized distribution network and rural drug supervision and supply network were further consolidated. At the end of the year, there were 44 health institutions, 40 hospitals and health centers in China, with health technicians 1278 and technicians from hospitals and health centers10/00, including 6 doctors16. All kinds of health institutions beds 1393, including 720 hospital beds. The number of outpatient visits in the hospital was 737,692. Residents donated 234 1 time.

administrative division

The towns and villages in Dayi County are

Jinyuan town

Dunyi Town, Heming Town

Xia Qing Town, Chujiang Town

Sanba Town, Shaqu Town

Yuansheng Town, Wushan Town

Longfeng Township, Cai Chang Town

Gaoshan Town, Fengdan Township

Sancha Town, Jinxing Township

Anren town Hanchang town

Shang' an town tiangongmiao town

Dongchang Town, yue lai zhen

Xiling town Sujia town

Xie Yuan Town and Xinchang Town

Tangchang Town, Wang Si Town

In 2002 1 and1year, Dayi County was recognized as the third batch of food safety demonstration counties (cities, districts) in Sichuan Province.

From June 5438 to February 2020, the General Office of the Ministry of Agriculture and Rural Affairs identified Dayi County as the fifth batch of demonstration counties (cities, districts) in China that took the lead in basically realizing the whole mechanization of main crop production.

From June 5438 to February 2020, the Sichuan Provincial Office of Spiritual Civilization Construction published the list of the fifth civilized cities in Sichuan Province, and Dayi County was on the list.

In June 2020 165438+ 10, the list of the top 100 counties and cities in China in 2020 was published, and Dayi County was on the list.

From June 5438 to October 2020 10, Dayi County was selected as the first batch of national digital village pilot areas.

In September 2020, the list of "Top 100 Counties and Cities in Western China in 2020" was published, and Dayi County was famous on the list, ranking 55th.

In June 2020, Dayi County was included in the second batch of revolutionary cultural relics protection and utilization counties (Long March District (Red Fourth Army)).

On October 20 19 10, the Ministry of Ecology and Environment awarded Dayi County the title of the third batch of national demonstration cities and counties for ecological civilization construction.

20 18, 10 in June, Dayi county was selected as one of the top 100 counties and cities in western China in 20 18, ranking 69th.

20 17 12, Dayi county is listed as a model county with the most investment potential in China.

From 2065438 to September 2006, the Ministry of Environmental Protection awarded Dayi County the title of "National Eco-city, County and District".