• Tucson
  • Saertu District

Tucson (/ˈtuːsɒn, tuːˈsɒn/; Spanish: Tucson, O'odham: Cuk-Ṣon) is a city in and the county seat of Pima County, Arizona, United States, and is home to the University of Arizona. It is the second largest city in Arizona behind Phoenix, with a population of 542,629 in the 2020 United States census, while the population of the entire Tucson metropolitan statistical area (MSA) is 1,043,433. The Tucson MSA forms part of the larger Tucson-Nogales combined statistical area (CSA). Both Tucson and Phoenix anchor the Arizona Sun Corridor. The city is 108 miles (174 km) southeast of Phoenix and 60 mi (97 km) north of the U.S.–Mexico border. Tucson is the 34th largest city and the 53rd largest metropolitan area in the United States (2014).

Major incorporated suburbs of Tucson include Oro Valley and Marana northwest of the city, Sahuarita south of the city, and South Tucson in an enclave south of downtown. Communities in the vicinity of Tucson (some within or overlapping the city limits) include Casas Adobes, Catalina Foothills, Flowing Wells, Midvale Park, Tanque Verde, Tortolita, and Vail. Towns outside the Tucson metro area include Benson to the southeast, Catalina and Oracle to the north, and Green Valley to the south.

Tucson was founded as a military fort by the Spanish when Hugo O'Conor authorized the construction of Presidio San Agustín del Tucsón in 1775. It was included in the state of Sonora after Mexico gained independence from the Spanish Empire in 1821. In 1853, the United States acquired a 29,670 square miles (76,840 km2) region of present-day southern Arizona and southwestern New Mexico from Mexico under the Gadsden Purchase. Tucson served as the capital of the Arizona Territory from 1867 to 1877. Tucson was Arizona's largest city by population during the territorial period and early statehood, until it was surpassed by Phoenix by 1920. Nevertheless, population growth remained strong during the late 20th century. In 2017, Tucson was the first American city to be designated a "City of Gastronomy" by UNESCO.

Saertu District is a municipal district of Daqing City, Heilongjiang Province. Saertu, which means "the place where the moon rises" in Mongolian, is located in the northeast of Daqing city. It is located at 124 °52 degrees east longitude and 125 °12 degrees east longitude, 46 °32 degrees north latitude and 46 °52 degrees north latitude. The whole territory is long from north to south and wide from east to west, with a total area of 548 square kilometers. The terrain in the east is slightly higher than that in the west, and the altitude is between 145 and 155 meters above sea level. The geomorphological appearance is a undulating low plain. There are scattered sand dunes in the southwest and northwest. It is located in the north temperate zone of Eurasian continental monsoon climate. Due to the distance from the sea and the influence of the cold air in the interior of Mongolia and the warm monsoon of the Sea of Japan, the climate shows a semi-humid and semi-arid temperate climate type with significant changes in the four seasons. Saertu District has nine streets with a total population of 33.88.
Airport In Saertu District - Daqing Saertu Airport
Daqing Sartu Airport (Daqing Sartu Airport, IATA: DQA, ICAO: ZYDQ), located at the junction of Sartu District, Daqing City, Heilongjiang Province, China and Anda City, Suihua City, 17.5 kilometers away from the eastern urban area of ​​Daqing City, and west of Daqing City The urban area is 22.5 kilometers away, and it is a 4C-level domestic feeder airport in China   .
In October 2008, the construction of Daqing Sartu Airport started; on September 1, 2009, Daqing Sartu Airport was officially opened to navigation; on June 15, 2019, the construction of the international terminal of Daqing Sartu Airport started   .
According to the official website of the airport in February 2021, the terminal building of Daqing Sartu Airport covers an area of ​​13,987 square meters, with 4 boarding bridges; the civil aviation station has 8 seats, including 1 class B seat and 6 C seats. Class aircraft stand, 1 dedicated deicing stand; the runway is 2,600 meters long and 45 meters wide; it can meet the needs of an annual passenger throughput of 1.47 million and a peak hour of 933 passengers   .
In 2019, Daqing Sartu completed a total of 858,021 passenger throughput, a year-on-year increase of 3.2%, ranking 117th in the country; cargo and mail throughput was 1,324.6 tons, a year-on-year decrease of 6.7%, ranking 111th in the country; aircraft movements took off and landed 6,697 , ranked 148th nationally   .
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