How big is the urban area of Shijiazhuang?

The urban area is 2206 square kilometers.

I. Geographical environment

Location context

Shijiazhuang is located in the south-central part of Hebei Province, bordering Hengshui in the east, Xingtai in the south, Shanxi Province in the west and Baoding in the north, 270 kilometers away from Beijing. The longest in the north-south direction is 246 kilometers, the widest in the east-west direction is 2 1 1 km, the outer boundary is 898 kilometers, and the city center is located at 38 04' north latitude and114 28' east longitude. Shijiazhuang has a total area of 20,235 square kilometers, of which the urban area is 2,206 square kilometers.

topography

Shijiazhuang city spans Taihang Mountain and North China Plain. The west is located in the middle of Taihang Mountain, accounting for about 50% of the total area of Shijiazhuang. Hutuo River alluvial plain in the east, with structures in its jurisdiction, belongs to the marginal zone of Shanxi platform and Bohai Depression, with low terrain in the southeast and high terrain in the northwest, large drop and complex landform. Taihang Mountain in the west is about 1000 meters above sea level, and the terrain is relatively high. The east of Beijing-Guangzhou Railway is a part of North China Plain. According to the origin, the eastern plain belongs to the piedmont alluvial plain of Taihang Mountain, with an altitude of 30- 100 meters, of which Pompeii village in xinji city is 28 meters above sea level, which is the lowest point in the jurisdiction. [8]

Climate environment

Shijiazhuang is located in the eastern part of the Eurasian continent, in the middle and low latitudes.

The edge is close to the Bohai Sea, belonging to the Pacific Ocean and temperate monsoon climate. The seasonal variation of solar radiation is remarkable, with frequent high and low pressure activities on the ground, four distinct seasons, distinct cold and summer, and precipitation concentrated in summer and autumn. The dry-wet cycle is obvious, with long summer and winter and short spring and autumn. It takes about 55 days in spring, 0/05 days in summer, 60 days in autumn and 0/45 days in winter. The annual average humidity of air is 65%. There is little precipitation in spring, and there is often a northerly wind or southerly wind of Grade 4, and the temperature rises rapidly in March and April. In summer, affected by the ocean temperature and humidity airflow, the precipitation in June, July, August and September accounts for 63%-70% of the annual precipitation, and the weather is humid. In the dog days of July and August, the air humidity is as high as 100%. Influenced by Mongolian high pressure in autumn, it is sunny and rainy, with moderate temperature and pleasant climate, with an average air humidity of 78%. In late autumn, there are many northeast winds and cold waves; In winter, influenced by Siberian cold high pressure, northwest wind prevails, the climate is cold, the weather is sunny, and it is cloudy and often snows. [8]

The annual total precipitation in Shijiazhuang is 401.1-752.0mm, of which the rainfall in the western mountainous area is 628.4-752.0mm; Other areas are 40 1. 1-595.9mm ... It often snows in winter, with a total snowfall of19.2-26.8mm. Although heavy snow brings some inconvenience to traffic, it protects the winter wheat and provides favorable water conditions for turning green in spring. There is little precipitation in spring, and the total rainfall is11.0-41.7mm. In summer, the rainfall is large and concentrated, and the rainfall is over 500 mm, and the annual total sunshine hours are1916.4-257/kloc-0. [8]

aquatic environment

The rivers within the jurisdiction of Shijiazhuang belong to the Daqinghe River System and Ziya River System in Haihe River Basin. There are 6 main flood channels, of which Shahe and Cihe wood road ditch in the north belong to Daqing River system, and Hutuo River, Hutuo River, Jinhe River, Huaihe River and Bahe River in the south-central part belong to Ziya River system. The total drainage area is 33,500 square kilometers. [8]

Two. natural resource

Hydrological resources

By 20 13, the surface water resources in Shijiazhuang will be 78 10/00000 cubic meters, and the groundwater resources will be17180000 cubic meters. After deducting the double calculation of surface water and groundwater resources, the total water resources in Shijiazhuang city is 2 15 1658 cubic meters, while 20 1658 cubic meters. Water supply in the city is 310.89 billion cubic meters, of which surface water supply is 595 million cubic meters, accounting for10.8%; The groundwater supply is 2.594 billion cubic meters, accounting for 8 1.3%. [9]

mineral resources

Shijiazhuang's mineral resources occupy an important position in Hebei Province, among which broken mica ranks first in the country. There are 8 species in Hebei Province: sillimanite, electric limestone, feldspar, shale for brick and tile, hornblende for decoration, bauxite, sandstone for glass and limestone for cement. There are more than 20 dominant minerals in Shijiazhuang: gold, iron, coal, marl, electric limestone, alkali limestone, dolomite for metallurgy, timely sandstone for glass, refractory clay, muscovite, timely, feldspar, vermiculite, talc, sillimanite, asbestos, oil, natural gas, building materials and decorative stone. [9]

By the end of 20 13, there were 59 kinds of minerals (including 6 1 subspecies) and 423 deposits in Shijiazhuang, including 28 large deposits, 62 medium deposits and 89 small deposits13. There are 28 kinds of mineral resources that have been developed and utilized, mainly including coal, iron, gold, mica, limestone for building and sand for building. Metal minerals can be divided into ferrous metals, nonferrous metals, precious metals, radioactive and rare rare earth metals.