What are the characteristics of Xi 'an?

Xi 'an Climate Characteristics: Xi 'an Plain belongs to warm temperate semi-humid continental monsoon climate, with four distinct seasons: cold, warm, dry and wet. Winter is cold, windy, foggy and less rainy and snowy; Spring is warm, dry, windy and the climate is changeable; Summer is hot and rainy, drought is prominent, and there are many thunderstorms and strong winds; Autumn is cool, the temperature drops rapidly, and the autumn rain is obvious.

Hydrological characteristics of Xi 'an: Uneven temporal and spatial distribution of runoff is a remarkable feature of Xi 'an River. The annual runoff difference between wet year and dry year is 4 ~ 7 times, and the annual runoff difference of some mountain tributaries is 10 times, and some rivers are even basically cut off in dry year. The annual runoff of rivers also changes greatly. In the dry season of February every year, the runoff only accounts for 2% of the annual total, and sometimes it is cut off, while in the flood season from July to 65438+ 10, the runoff accounts for 45% ~ 56% of the annual total.

I. Introduction to Xi 'an:

Xi 'an, known as Chang 'an and Haojing in ancient times, is the capital of Shaanxi Province, a sub-provincial city, a core city of Guanzhong Plain urban agglomeration, an important national central city in western China, and an important scientific research, education and industrial base in China. Xi is one of the four ancient capitals in China, a "world historical city" determined by UNESCO 198 1, and one of the top ten ancient capitals in the world selected by American media. Located in the middle of Guanzhong Plain, it borders Weihe River in the north, Qinling Mountain in the south and Bashui Chang 'an. It governs 1 1 district 2 counties, with a total area of 10 108 square kilometers. At the end of 20 17, the total registered population was 9,056,800.

Chang 'an has been an imperial capital since ancient times, with the capital of Western Zhou Dynasty, Qin Dynasty, Western Han Dynasty, Eastern Han Dynasty, Western Jin Dynasty, Former Zhao Dynasty, Former Qin Dynasty, Later Qin Dynasty, Western Wei Dynasty, Northern Zhou Dynasty, Sui Dynasty and Tang Dynasty 13 dynasties. It is an important birthplace of Chinese civilization and the Chinese nation and the starting point of the Silk Road.

Second, the location:

Xi City is located in Guanzhong Basin in the middle of Weihe River Basin, with east longitude 107.40 ~ 109.49 degrees and north latitude of 33.42 ~ 34.45 degrees, bordering Weihe River and Loess Plateau in the north and Qinling Mountains in the south. The eastern part is bounded by Zero River and Yuanqiu Mountain, and is connected with hua county, Weinan, Shangzhou and Luonan counties. The western part is bounded by Taibai Mountain and Qinghai Loess Plateau, bordering Meixian County and Taibai County. South to the main ridge of the North Qinling Mountains, bordering Foping County, ningshan county County and Zhashui County;

It reaches Weihe River in the north and crosses Weihe River in the northeast, and is adjacent to Xianyang City, Yangling District and Sanyuan, Jingyang, Xingping, Wugong, Fufeng and Fuping counties (cities). It is about 204 kilometers long from east to west and about 1 16 kilometers wide from north to south. As of 20 16, the area of Xi city is 9983 square kilometers, of which the urban area is 1066 square kilometers.

References:

Baidu encyclopedia Xi an