Lianhu District, Xi'an City, Shaanxi Province

Lianhu District is located in the northwest of Xi'an city. In the East, Beijie street, beiguanzheng street and Longshou village are adjacent to the new urban area. In the west, Weiyang District is connected with Xihu railway and wei26jie street in the north. In the south, Beilin District and Yanta District are adjacent to moat and DAHUAN river. It has a total area of 38 square kilometers and a total population of 712300 (2015). Jurisdiction of 9 streets, the district government in the North Gate Street North Gate 159.

Lianhu District is the starting point of the famous "Silk Road" in history, with large-scale sculptures of the "Silk Road", Datang West City, Datang West City Museum and other silk road tourist attractions.

Traffic developed, Longhai railway, Xihu railway transit, ring road, Second Ring Road and other streets. Historical sites include Tang Chang'an City site, Drum Tower built in Ming and Qing Dynasties, Ming city wall, huajuexiang mosque, Guangren Temple (commonly known as Lama Temple) built in Qing Dynasty, and "Zhiyuan" of Yang Hucheng official residence.

In June 2020, the Central Committee for the rule of law was selected as the first batch of national government construction demonstration areas and projects.

history

Lianhu District is a part of the central city of Xi'an. It is the seat of the emperors of Sui and Tang Dynasties and the local administrative organs of the past dynasties - government, road, road and Xi'an municipal government. Since the establishment of Chang'an County in the fifth year of emperor Gaozu of Han Dynasty (202 BC), it has been under the jurisdiction of Chang'an County.

On September 22, 1928, the first Xi'an municipal government was set up, but there was no district level system.

On November 8, 1930, the organizational system of Xi'an city was abolished.

On September 1, 1944, Xi'an municipal government was set up again, under the jurisdiction of the town and Baojia.

In November 1945, the town was withdrawn and divided into districts under the jurisdiction of the police sub Bureau, named after the ordinal number. They were all called district offices. Since then, there has been a formal administrative system at the district level.

After the liberation of Xi'an on May 20, 1949, the district offices were established in the ordinal number along the original 12 districts, and soon became the District People's government.

On September 25, 1954, the original 12 districts were adjusted to 9 districts, and the third and sixth districts were merged to form Lianhu District. In January 1955, Lianhu District was officially opened to the outside world.

In May 1960, Lianhu District was abolished.

The system of Lianhu District was restored in July 1962.

In November 1966, Lianhu District was renamed Hongwei District, and its original name was restored in 1972.

At the end of 1990, it has jurisdiction over the line of Beidajie beiguanzheng Street Longshou East Road in the East, the railway special line at the west end of Daqing Road in the west, the line of Xidajie east section Nancheng Hexi section Nancheng 2nd Ring Road Kunming Road in the south, and the line of Longshou North Road dabaiyang road in the north, covering an area of 38 square kilometers with 518983 people. The district government is stationed at 29 Hongbu street, with jurisdiction over 11 streets and 394 neighborhood committees (including family committees) 35 administrative villages.

In 1996, Lianhu District covers an area of 38 square kilometers and has a population of 552000, including 29000 Hui people. It is an urban area inhabited by Hui people. It has jurisdiction over 11 streets: Beiyuanmen street, Qingnian Road Street, Miaohou street, Xidajie street, Xiguan Street, Tumen street, Taoyuan road street, Zaoyuan street, Beiguan Street, hongmiaopo street and Huancheng West Road street.

In 2001, Miaohou street and West Street were merged into Beiyuanmen street.

Regionalization

Lianhu District includes the following streets:

Beiyuanmen street, Qingnian Road Street, Xiguan Street, Tumen street, Taoyuan road street, Zaoyuan street, Beiguan Street, hongmiaopo street, Huancheng West Road street.

Geography

position

Lianhu District is located in the northwest of Xi'an city. In the East, North Street, beiguanzheng street and Longshou village are connected with the new urban area; in the west, Huxian railway, Longshou North Road and dabaiyang road are connected with Weiyang District; in the south, moat and Dahuan River are adjacent to Beilin and Yanta District. It covers an area of 42.9 square kilometers. The geographical coordinates are 108 ° 50 ′ 57 ″ - 108 ° 56 ′ 31 ″ E and 34 ° 15 ′ 12 ″ - 34 ° 17 ′ 39 ″ n.

landforms

Lianhu District is located in the second terrace of the alluvial plain of the Weihe River, 20-30 meters higher than the riverbed of the Weihe River. Longshou originally belonged to the third terrace which remained on the second terrace, and it was 3-13 meters higher than the second terrace. The overall terrain of the area is high in the northeast and open and flat in the West. There are three gently undulating slope beams in the area. The first one extends eastward from hongmiaopo to Erlu Road, with a contour line of 400-410 meters; the second one extends westward from the north city wall to Tumen, roughly along the East-West contour line of 400 meters; the third one from the West Street to the East Street, just coincides with the contour line of 410 meters. However, after more than one thousand years of urban construction, it is not obvious in some areas. There is little water surface, except Lianhu Park and Chenghe, there is no large water landscape. From 1959 to 1971, the average speed of land subsidence was 2 mm / year. From 1972 to 1983, the settlement rate increased, and the average settlement rate was 4-9 times of the previous stage. Since 1983, the settlement rate has been stable. The altitude is about 400 meters.

climate

Lianhu District belongs to the East Asian warm temperate continental monsoon climate, cold and warm, dry and wet, four distinct seasons. The climate is cool and dry in early spring, warm and sunny in April and may; it is hot and rainy in summer, which is suitable for crop growth; it is cool and rainy in autumn, which is humid; it is not very cold in winter, which is dry and less snow. The annual average temperature is 13.3 ℃, the hottest in July, the average temperature is 26.4 ℃, the extreme maximum temperature occurs from June to July, and the temperature reached 45.2 ℃ on July 14, 1934. January is the coldest, with an average temperature of - 0.9 ℃. The extreme minimum temperature occurs in January, and the temperature dropped to - 20.6 ℃ on January 11, 1955. With the expansion of urban scale, dense buildings and concentrated population, the heat island effect in the city is higher than that in the surrounding suburbs. The annual average intensity of heat island effect is 0.5 ℃ and that in August is 0.6 ℃. The average number of hot days in summer in the urban area is 23 days, which is higher than or equal to 35 ℃, and 0.7 days, which is higher than or equal to 40 ℃. According to the custom, the average temperature of 10-22 ℃ is spring and autumn, the temperature higher than 22 ℃ is summer, and the temperature lower than 10 ℃ is winter: generally, spring begins on March 25, with 64 days; summer begins on May 28, with 98 days; autumn begins on September 3, with 61 days; winter begins on November 3, with 142 days. The annual sunshine hours are generally 2038.2 hours, the longest in August, 233.7 hours, accounting for 11.47% of the annual sunshine hours, and the shortest in February, 126.1 hours, accounting for 6.19% of the annual sunshine hours. The sunshine hours are affected by drought and rain, and the interannual variation is large. The annual average frost free period is 232 days, which starts from March 22 to 31, starts from February 25 to 27, starts from April 6 to 26, and ends from November 3 to 12. The earliest ending date is October 10-21, and the latest ending date is November 28-30. The average annual precipitation is 584.9 mm and the average number of precipitation days is 96.6 days. The number of precipitation days varies greatly from year to year, with 156 days at most and 71 days at least. 7. The precipitation in August and September is concentrated, accounting for about 50% of the annual precipitation. In December and January and February of the next year, the precipitation is the least, accounting for only about 4% of the annual precipitation. The wind direction is affected by the terrain and rivers. The annual average wind speed is 2 m / s.

resources

mineral products

Large areas of igneous rocks and metamorphic rocks in Qinling Mountains and thick Cenozoic sediments in Weihe basin have laid a foundation for the accumulation of various metal, non-metal and energy resources. 47 kinds of minerals have been identified, including 21 kinds of metallic minerals, 22 kinds of non-metallic minerals, 2 kinds of energy minerals and 2 kinds of other minerals.

The main metal ores are: iron, manganese, chromium, titanium, copper, lead, zinc, zinc, copper, molybdenum, gold, tungsten, uranium and high aluminum mineral raw materials.

The main non-metallic minerals are: marble, feldspar, dolomite, cement limestone, graphite, construction gravel, vein quartz, "Lantian jade", sand line stone, sulfur ore, etc.

soil

The surface of Lianhu District is mainly composed of soil and loess. The upper part of the land is the upper Pleistocene loess with brown red paleosol layer, which is several meters to more than ten meters thick. The lower part is the upper Pleistocene alluvium, which is medium coarse sand with loam, and the alluvium is more than 20 meters. The results show that the soil and yellow loamy soil have thick maturing layer, loose porosity, water storage and air permeability, and organic matter content is 1.14% ~ 1.93%, which is beneficial to agricultural production.

In the west of the area, the upper part of the surface is covered with 5-12m loess, of which the collapsible soil layer is about 3-5M, and the collapsibility grade is I-II. It is a non self weight collapsible site, and the foundation bearing capacity is generally 12-18t / m2. The lower part is saturated loess under water level with bearing capacity of 8-12 tons / m2. Further down are loam and gravel.

In the old urban area, the upper part of the earth's surface is covered with loess for about 10 meters, and the artificial fill is generally distributed between 2 and 6 meters below the ground, most of which are broken bricks, tiles and garbage, and there are ancient tombs. The bearing capacity of the foundation is about 12-18 T / m2, the strength is low, and the difference is large.

From the east entrance of Lianhu road to the southwest, between yuxiangmen and Ximen, and between the labor park and Kunming Road, there is a ground fissure, which has a certain impact on power supply, water supply, gas supply, pipelines and roads.

vegetation

The forest planting in the region is mainly Sophora japonica, Paulownia, poplar, willow, toon, elm and other trees, covering an area of 180 mu. Fruit trees mainly include apples, grapes, peaches, etc., covering an area of 27 mu. Street trees are mainly deciduous trees, and the main varieties are Fatong, Zhonghuai, Populus tomentosa, Acer truncatum, Sabina chinensis, Baila, Populus alba, etc.

There are many kinds of flowers and plants in landscaping. Evergreen trees are Platycladus orientalis, juniper, juniper, Sabina, juniper, snow

Chinese PinYin : Shan Xi Sheng Xi An Shi Lian Hu Qu