Jiayin County, Yichun City, Heilongjiang Province

Jiayin County Jiayin County, under Yichun city of Heilongjiang Province, is located in the north of Yichun City, the right bank of the middle reaches of Heilongjiang Province, and the east section of the north foot of Xiaoxing'an Mountains. It lies between 48 ° 8 ′ 30 ″ n to 49 ° 26 ′ 5 ″ E and 129 ° 9 ′ 45 ″ e to 130 ° 50 ″. The total area is 6739 square kilometers. Jiayin county is adjacent to Luobei County in the southeast, Hegang City in the south, Yichun Fenglin county and Tangwang County in the southwest, and Xunke County in the West. Jiayin county is a long and narrow area from northwest to Southeast. As Xiaoxing'an Mountains cross the whole territory from southwest, and the northern foot extends to the Bank of Heilong river like chicken feet, the whole territory is high in southwest and low in Northeast. Jiayin county belongs to the northern part of the temperate continental monsoon climate zone, with great climate difference in the four seasons of the year. As of 2018, Jiayin county has jurisdiction over 4 towns and 5 townships. The county government is located in Chaoyang town. The total resident population is 81000 (2018).

In the fifth year of the Republic of China (1916), the Wuyun Administration Bureau was set up, which was subordinate to the heihehe Yin office. In 1970, it was assigned to Yichun city. Jiayin county has won the titles of "National Garden County", "national health county" and "national civilized county". There are Dinosaur National Geopark, maolangou National Forest Park and other attractions.

In 2016, the GDP of Jiayin County reached 2.35 billion yuan, with an average annual growth of 7.9%; the local general public budget revenue reached 130 million yuan, with an average annual growth of 11.6%.

History of construction

From the Warring States period to the Western Han Dynasty, people lived in Jiayin.

Nuzhen lived in Sui, Tang, Liao and Jin Dynasties.

In Ming Dynasty, Manchu tribes began to set up "Wei" and "Suo".

After the 17th century, it was mainly a hunting place in Oroqen.

In the early Qing Dynasty, Jiayin was under the jurisdiction of Heilongjiang general, and Xingdong road was under the jurisdiction of Guangxu in 1906.

In 1912, Wuyun and Foshan were under the jurisdiction of Luobei county.

In the fifth year of the Republic of China (1916), the Wuyun Administration Bureau was set up, which was subordinate to the heihehe Yin office.

In 1927, the Bureau of Wuyun county and Luobei county was set up and Foshan was set up.

In 1929, Wuyun and Foshan set up their own administrative bureaus, which were also upgraded to third class counties, under the Heihe municipal preparatory office.

During the period from September 18 Incident in 1931 to August 15, 1945, the Northeast was under the jurisdiction of Heihe and Sanjiang provinces.

In 1945, Wuyun and Foshan counties were restored.

In 1947, the working committee of Foshan county and the people's Government of Foshan county were established. The establishment of Wuyun county was abolished and it was under the jurisdiction of Hejiang province and Songjiang province.

In 1952, it was assigned to Heihe area of Heilongjiang Province.

In 1955, it was renamed Jiayin county.

In 1970, it was assigned to Yichun city.

administrative division

As of 2018, Jiayin county has 4 towns and 5 townships: Chaoyang Town, Wuyun Town, wulaga Town, Baoxing Town, Changsheng Town, Xiangyang Town, Hujia Town, Hongguang town and Qingshan Town, with a total of 73 administrative villages; it also has 4 township level units: Taiping forest farm, Qinghe forest farm, Malian forest farm and Jiayin farm. The county government is located at 236 Jiangshan Road, Chaoyang town.

geographical environment

Location context

Jiayin county is located in the northeast of Yichun City, the right bank of the middle reaches of Heilongjiang Province, and the east section of the north foot of Xiaoxing'an Mountains. It lies between 48 ° 8 ′ 30 ″ n to 49 ° 26 ′ 5 ″ E and 129 ° 9 ′ 45 ″ e to 130 ° 50 ″. The county covers an area of 6739 square kilometers. Jiayin county is adjacent to Luobei County in the southeast, Hegang City in the south, Yichun Fenglin county and Tangwang County in the southwest, and Xunke County in the West. The county is 222 kilometers away from Yichun City, 519 kilometers away from Harbin City, 256 kilometers away from Hegang City, 460 kilometers away from Heihe City, and 210 kilometers away from Luobei county.

geology

Jiayin county is located in the northern margin of guangcailing uplift, the second huge uplift of Xinhua system proposed by Li Siguang.

Jiayin county is located in the northern margin of Jihei geosynclinal fold system in Tianshan Xingan geosynclinal fold area. The Mudanjiang deep fault extends in the East, which belongs to the north of Jiamusi uplift in the East and the yougeosynclinal fold belt in Xiaoxing'anling in Jilin Province in the West. The Mesozoic and Cenozoic belts are located in the outer zone of the circum Pacific tectonic system.

The exposed strata in Jiayin county are Proterozoic, Mesozoic and Cenozoic, and the Paleozoic strata are missing.

topographic features

Jiayin county is a long and narrow area from northwest to Southeast. As Xiaoxing'an Mountains cross the whole territory from southwest, and the northern foot extends to the Bank of Heilong river like chicken feet, the whole territory is high in southwest and low in Northeast. Heilongjiang Province flows through Xunke county and enters into the river mouth of Gegong. The huiwuyun River, jielie River, wulaga River and Jiayin river flow through Luobei county. Xiaoxing'an Mountains and Heilongjiang are the decisive factors of the landform of Jiayin county. The mountains in the southwest are crisscross, and the virgin forest blocks the sky. The average altitude is about 450 meters. Shouhu mountain, 787.9 meters above sea level, is the top of Jiayin county. The central part is hilly area, mostly natural secondary forest, with an average altitude of about 250 meters. The zonal alluvial plain formed along the Heilongjiang river system is rich in water and grass, with an average altitude of about 150 meters, and the lowest point, Malian station, is 76 meters above sea level.

According to the main geomorphological characteristics, Jiayin county can be divided into four different geomorphic types: Southwest Low Mountain and hilly area, mainly composed of granite; Northwest and central hilly area, mainly composed of Baijian volcanic clastic rocks and tertiary loose glutenite; Heilongjiang coastal alluvial plain is composed of Heilongjiang low terrace and Heman formation beach; Eastern basalt platform area, mainly composed of tertiary basalt Although eroded and cut, the second to third grade point plane can be seen.

Before the 1980s, the landform of Jiayin county was divided into seven mountains, one water and two fields. In 1982, it was changed into "eight mountains, half water, half grass, one field". Woodland 9106600 mu, accounting for 78.3% of the total area; water surface area 255000 mu, accounting for 2.2% of the total area; arable land 665088 mu, accounting for 5.7% of the total area; wasteland 1564862 mu, accounting for 18.5% of the total area.

climate

Climatic characteristics

Jiayin county belongs to the northern temperate continental monsoon climate zone. Because of the complex shape of the county, mountains, rivers, and caused significant regional climate differences. According to the meteorological observation for many years, Jiayin county is divided into four climatic zones: the mild zone along the river plain, the warm and cool zone in Pinggang, the cold zone in low mountain and valley, and the cold zone in deep mountain and valley.

Seasonal division

Due to the influence of geographical location, solar radiation and atmospheric distribution around the sea and land, the climate of Jiayin County varies greatly in the four seasons of the year: long, dry and cold winter; mild and rainy summer; low temperature and rainy early spring, easy waterlogging of snow, less rain in late spring, easy drought; rapid cooling in autumn, often freezing injury.

According to the climatic characteristics, it is determined that November to march is winter, April to May is spring, June to August is summer, and September to October is autumn. The climate profile of each season is as follows:

Spring: the temperature rises quickly, the precipitation is less, the gale is more, and the drought and flood disasters are easy to occur.

Summer: mild, rainy and humid.

Autumn: the temperature drops rapidly, and freezing injury often occurs.

Winter: from November to the end of March of the next year, it is the longest, coldest and driest season in the four seasons, with an average temperature of minus 19.9 ° C.

air temperature

The annual average temperature in Jiayin County ranges from - 0.7 ° C to - 1.5 ° C. The extreme maximum temperature in June and July is between 35 ° C and 37 ° C above zero in the villages of Heilongjiang plain, and about 37 ° C in the low mountain and valley areas; the extreme minimum temperature in January is between 44 ° C and 45 ° C below zero in the villages of Heilongjiang Province, and the days when the daily minimum temperature is lower than 30 ° C below zero are the longest for 44 consecutive days, and the alpine tide date below 40 ° C can be up to 10 days.

Precipitation and snow cover

The spatial distribution of annual precipitation in Jiayin county is controlled not only by atmospheric circulation, but also by topography. The precipitation has a certain regularity, that is, a slight decrease trend from northeast to southwest. The average annual precipitation of the county is about 500 to 600 mm. The average annual precipitation in the mild area is about 615 mm, with the maximum of 782 mm over the years. The average annual precipitation in the cold area is 530-540 mm, with the maximum of 680 mm over the years.

sunshine

The annual average sunshine hours in Jiayin county are 2586.9 hours, including 481.6 hours from March to may in spring, 712 hours from June to August in summer, 395.4 hours from September to October in autumn and 947.9 hours from November to February in winter.

wind

The annual average wind speed in Jiayin county is 3.1 m / s. Interannual variation of wind speed: spring is greater than autumn, autumn is greater than summer, summer is greater than winter. In spring, due to the high pressure gradient, cold wave and cyclone activities are frequent, especially when the Lake Baikal low moves southeast and deepens locally, strong southwest wind often forms in the front and strong northwest wind in the back. The maximum wind speed can reach 17-22 M / s and last for one to two days.

The wind direction is greatly affected by the terrain, and the east wind is the most in the whole year. The seasonal variation of wind direction is that the frequency of northwest wind direction is the highest in spring and autumn, and the frequency of southeast wind direction is the highest in summer.

humidity

The annual average relative humidity of Jiayin county is 70%. The air temperature rises rapidly in spring, but the summer wind is not coming, so the moisture content in the air increases slowly, so the relative humidity in spring is the minimum. The annual average is 57%, and the minimum value is only 40%; in summer, the water vapor content in the air increases rapidly. Although the temperature increases, it is far less than that of the water vapor content. Therefore, the relative humidity in summer is high, and the annual average is 76%; in autumn, it is sunny and cloudy, and the solar radiation is relatively low

Chinese PinYin : Hei Long Jiang Sheng Yi Chun Shi Jia Yin Xian