Geography

Beijing is situated at the northern tip of the roughly triangular North China Plain, which opens to the south and east of the city. Mountains to the north, northwest and west shield the city and northern China's agricultural heartland from the encroaching desert steppes. The northwestern part of the municipality, especially Yanqing County and Huairou District, are dominated by the Jundu Mountains, while the western part is framed by the Western Hills, or Xishan. The Great Wall of China, which stretches across the northern part of Beijing Municipality, made use of this rugged topography to defend against nomadic incursions from the steppes. Mount Dongling, in the Western Hills and on the border with Hebei, is the municipality's highest point, with an altitude of 2,303 metres (7,556 ft).

Major rivers flowing through the municipality include the Yongding River and the Chaobai River, part of the Hai River system, and flow in a southerly direction. Beijing is also the northern terminus of the Grand Canal of China, which was built across the North China Plain to Hangzhou. Miyun Reservoir, built on the upper reaches of the Chaobai River, is Beijing's largest reservoir, and crucial to its water supply.

The urban area of Beijing is in the south-central part of the municipality and occupies a small but expanding portion of the municipality's area. It spreads out in bands of concentric ring roads, of which the fifth and outermost, the Sixth Ring Road (the numbering starts at two), passes through several satellite towns. Tian'anmen and Tian'anmen Square are at the centre of Beijing, directly to the south of the Forbidden City, the former residence of the emperors of China. To the west of Tian'anmen is Zhongnanhai, home to the paramount leaders of the PRC. Running through central Beijing from east to west is Chang'an Avenue, one of the city's main thoroughfares.

Climate

Beijing has a rather dry, monsoon-influenced humid continental climate (Köppen climate classification Dwa), characterised by hot, humid summers due to the East Asian monsoon, and generally cold, windy, dry winters that reflect the influence of the vast Siberian anticyclone.[41] Spring can bear witness to sandstorms blowing in from the Mongolian steppe, accompanied by rapidly warming, but generally dry, conditions. Autumn, like spring, sees little rain, but is crisp and short. The monthly daily average temperature in January is −3.7 °C (25.3 °F), while in July it is 26.2 °C (79.2 °F). Precipitation averages around 570 mm (22.4 in) annually, with the great majority of it falling in the summer months. Extremes have ranged from −27.4 to 42.6 °C (-17 to 109 °F).

Administrative divisionsMain

Beijing Municipality currently comprises 16 administrative county-level subdivisions including 14 urban and suburban districts and two rural counties. On July 1, 2010, Chongwen (崇文区) and Xuanwu Districts (宣武区) were merged into Dongcheng and Xicheng Districts, respectively.