User:Slashem/geo

China is located in East Asia and stretches some 5000 km from east to west, and about 5500 km from north to south. It is bordered in the north, west and south by deserts and high mountains and has some 14500 km of coastline.

General
China is located in East Asia, south of Mongolia and the Siberian landmass, west of the Korean Peninsula and Japan, north of Southeast Asia, and east of Central and South Asia.

China has a total area of nearly 9,596,960 square kilometers: 9,326,410 square kilometers of land, and 270,550 square kilometers of inland lakes and rivers. East-West it is about 5,000 kilometers from the Heilong Jiang (Amur River) to the Pamir Mountains in Central Asia; North-South it is about 4,050 kilometers from Heilongjiang Province to Hainan Province and another 1,450 kilometers to Zengmu Shoal, a territorial claim off the north coast of Malaysia.

China has a total of 22,117 km of land boundaries with 14 other nations: Afghanistan (76 km), Bhutan (470 km), Burma (2,185 km), India (3,380 km), Kazakhstan (1,533 km), North Korea (1,416 km), Kyrgyzstan (858 km), Laos (423 km), Mongolia (4,677 km), Nepal (1,236 km), Pakistan (523 km), Russia (4,300 km), Tajikistan (414 km), and Vietnam (1,281 km).

China’s coastline extends 14,500 km from the border with North Korea in the north to Vietnam in the south. China’s coasts are on the East China Sea, Korea Bay, Yellow Sea, and South China Sea.

China claims a 12 nmi territorial sea, a 24 nmi contiguous zone, a 200 nmi exclusive economic zone, and a 200 nmi continental shelf.

Topography
China ranges from mostly plateaus and mountains in the west to lower lands in the east. Principal rivers flow from west to east, including the Yangtze (central), the Huang He (Yellow river, north-central), and the Amur (northeast), and sometimes toward the south (including the Pearl River, Mekong River, and Brahmaputra), with most Chinese rivers emptying into the Pacific Ocean.

In the east, along the shores of the Yellow Sea and the East China Sea, there are extensive and densely populated alluvial plains, while on the edges of the Inner Mongolian plateau in the north, grasslands can be seen. Southern China is dominated by hill country and low mountain ranges. In the central-east are the deltas of China's two major rivers, the Yellow River and Yangtze River (Chang Jiang). Other major rivers include the Xi, Mekong, Brahmaputra and Amur.

In the west, the north has a great alluvial plain, and the south has a vast calcareous tableland traversed by hill ranges of moderate elevation, and the Himalayas, containing Earth's highest point, Mount Everest. The northwest also has high plateaus with more arid desert landscapes such as the Takla-Makan and the Gobi Desert, which has been expanding.

China stretches some 5,000 km across the East Asian landmass in an erratically changing configuration of broad plains, expansive deserts, and lofty mountain ranges, including vast areas of inhospitable terrain. The eastern half of the country, its seacoast fringed with offshore islands, is a region of fertile lowlands, foothills and mountains, desert, steppes, and subtropical areas. The western half of China is a region of sunken basins, rolling plateaus, and towering massifs, including a portion of the highest tableland on earth. The vastness of the country and the barrenness of the western hinterland have important implications for defense strategy (see Military history of China). In spite of many good harbors along the approximately 18,000 km coastline, the nation has traditionally oriented itself not toward the sea but inland, developing as an imperial power whose center lay in the middle and lower reaches of the Yellow River on the northern plains.

Terrain and vegetation vary greatly in China. Mountains, hills, and highlands cover about 66 percent of the nation's territory, impeding communication and leaving limited level land for agriculture. Mountains cover 33 percent of China’s landmass, plateaus 26 percent, basins 19 percent, plains 12 percent, and hills 10 percent. Thus, 69 percent of China’s land is mountains, hills, and highlands.

Most ranges, including all the major ones, trend eastwest. China has five main mountain ranges, and seven of its mountain peaks are higher than 8,000 meters above sea level. The main topographic features include the Qingzang (Qinghai-Tibet) Plateau at 4,000 m above sea level and the Kunlun, Qin Ling, and Greater Hinggan ranges.

In the southwest, the Himalayas and the Kunlun Mountains enclose the Qingzang Plateau, which encompasses most of Xizang Autonomous Region and part of Qinghai Province. The Qingzang Plateau the most extensive plateau in the world, where elevations average more than 4,000 m above sea level and the loftiest summits rise to more than 7,200 m. From the Qingzang Plateau, other less-elevated highlands, rugged east-west trending mountains, and plateaus interrupted by deep depressions fan out to the north and east. A continental scarp marks the eastern margin of this territory extending from the Greater Hinggan Range in northeastern China, through the Taihang Shan (a range of mountains overlooking the North China Plain) to the eastern edge of the Yunnan-Guizhou Plateau in the south. Virtually all of the low-lying areas of China -- the regions of dense population and intensive cultivation -- are found east of this scarp line.

China's ast-west ranges include some of Asia's greatest mountains. In addition to the Himalayas and the Kunlun Mountains, there are the Gangdise Shan (Kailas) and the Tian Shan ranges. The latter stands between two great basins, the massive Tarim Basin to the south and the Junggar Basin to the north. Rich deposits of coal, oil, and metallic ores lie in the Tian Shan area. The largest inland basin in China, the Tarim Basin measures 1,500 km from east to west and 600 km from north to south at its widest parts.

In the Himalaya Mountains, the world’s highest, are Mount Everest (known in China as Qomolangma) at 8,844.4 m (based on new official measurements) and K2 at 8,611 m, shared with Nepal and Pakistan, respectively. The Himalayas form a natural boundary on the southwest as the Altai Mountains do on the northwest. Lesser ranges branch out, some at sharp angles from the major ranges. The mountains give rise to all the principal rivers.

The spine of the Kunlun Mountains separates into several branches as it runs eastward from the Pamir Mountains. The northernmost branches, the Altun Shan and the Qilian Shan, rim the Qing Zang Plateau in west-central China and overlook the Qaidam Basin, a sandy and swampy region containing many salt lakes. A southern branch of the Kunlun Mountains divides the watersheds of the Huang He and the Chang Jiang (Yangtze River). The Gansu Corridor, west of the great bend in the Huang He, was traditionally an important communications link with Central Asia.

North of the 3,300 km-long Great Wall, between Gansu Province on the west and the Greater Hinggan Range on the east, lies the Inner Monglia Plateau, at an average elevation of 1,000 m above sea level. The Yin Shan, a system of mountains with average elevations of 1,400 m, extends east-west through the center of this vast desert steppe peneplain. To the south is the largest loess plateau in the world, covering 600,000 km² in Shaanxi, parts of Gansu and Shanxi provinces, and some of Ningxia-Hui Autonomous Region. Loess is a yellowish soil blown in from the Inner Monglian deserts. The loose, loamy material travels easily in the wind, and through the centuries it has veneered the plateau and choked the Yellow River with silt.

The lowest inland point in China—the second lowest place in the world after the Dead Sea—is at Turpan Pendi, 140 km southeast of Urumqi, the capital of Xinjiang, at 154 m below sea level. With temperatures that have reached 49.6 C, it also ranks as one the hottest places in China.

Geography
From the Tibetan Plateau and other less-elevated highlands rise rugged east-west trending mountains, and plateaus interrupted by deep depressions fanning out to the north and east. The Tibetan Plateau is a vast, elevated plateau covering most of the Tibet Autonomous Region and Qinghai Province in the People's Republic of China and Ladakh in Kashmir. With an average elevation of over 4,500 meters, the highest and biggest plateau in the world and an area of 2.5 million square kilometers. A continental scarp marks the eastern margin of this territory, a scarp that extends from the Greater Khingan Range in northeastern China, through the Taihang Mountains (a range of mountains overlooking the North China Plain) to the eastern edge of the Yunnan-Guizhou Plateau in the south. All of the low-lying areas of China, which support dense population and intensive cultivation, are to the east of this scarp line.

The east-west ranges include some of Asia's greatest mountains. In addition to the Himalayas and the Kunlun Mountains, there are the Kailash (Gangdise) and the Tian Shan ranges. The latter stands between two great basins, the massive Tarim Basin to the south and the Dzungarian Basin to the north. Rich deposits of coal, oil, and metallic ores lie in the Tian Shan area. The largest inland basin in China, the Tarim Basin measures 1,500 kilometres from east to west and 600 kilometres from north to south at its widest parts. The Himalayas form a natural boundary on the southwest as the Altai Mountains do on the northwest. Lesser ranges branch out, some at sharp angles from the major ranges. The mountains give rise to all the principal rivers. The spine of the Kunlun Mountains separates into several branches as it runs eastward from the Pamir Mountains. The northernmost branches, the Altyn-Tagh and the Qilian Range, form the rim of the Tibetan Plateau in west-central China and overlook the Qaidam Basin, a sandy and swampy region containing many salt lakes. A southern branch of the Kunlun Mountains divides the watersheds of the Yellow River (Huang He) and the Yangtze River (Chang Jiang). The Gansu Corridor, west of the great bend in the Yellow River, was traditionally an important communications link with Central Asia.

North of the 3,300-kilometre-long Great Wall, between Gansu Province on the west and the Greater Khingan Range on the east, lies the Mongolian Plateau, at an average elevation of 1,000 metres above sea level. The Yin Mountains, a system of mountains with average elevations of 1,400 metres, extends east-west through the center of this vast desert steppe. To the south is the largest loess plateau in the world, covering 600,000 square kilometers in Shaanxi Province, parts of Gansu and Shanxi provinces, and some of Ningxia-Hui Autonomous Region. Loess is a yellowish soil blown in from the Inner Mongolian deserts. The loose, loamy material travels easily in the wind, and through the centuries it has veneered the plateau and choked the Yellow River with silt. Because the river level drops precipitously toward the North China Plain where it sluggishly crosses the delta, it carries a heavy load of sediment in the form of sand and mud from the upper reaches, much of which is deposited on the flat plain. The flow is controlled mainly by constantly repaired man-made embankments while floods and course changes have recurred over the centuries. As a result the river flows on a raised ridge fifty metres or more above the plain, Traditionally, rulers were judged by their concern for or indifference to preservation of the embankments.

Flowing from its source in the Tibetan highlands, the Yellow River courses toward the sea through the North China Plain, the historic centre of Chinese expansion and influence. Ethnic Chinese people have farmed the rich alluvial soils of the plain since ancient times, constructing the Grand Canal of China for north-south transport. The plain itself is actually a continuation of the Manchurian Plain to the northeast but is separated from it by the Bohai Gulf, an extension of the Yellow Sea.

The Qinling mountain range, a continuation of the Kunlun Mountains, divides the North China Plain from the Yangtze River Delta and is the major physiographic boundary between the two great parts of China Proper. It is in a sense a cultural boundary as well, influencing the distribution of custom and language. South of the Qinling divide are the densely populated and highly developed areas of the lower and middle plains of the Yangtze and, on its upper reaches, the Sichuan Basin, an area encircled by a high barrier of mountain ranges. The country's longest and most important waterway, the Yangtze River is navigable over much of its length and is now the site of the Three Gorges Dam. Rising on the Tibetan Plateau, the Yangtze River traverses 6,300 kilometers through the heart of the country, draining an area of 1.8 million square kilometers before emptying into the East China Sea. The Sichuan Basin, favoured by a mild, humid climate and a long growing season, produces a rich variety of crops; it is also a leading silk-producing area and an important industrial region with substantial mineral resources.

Second only to the Qinling as an internal boundary is the Nanling, the southernmost of the east-west mountain ranges. The Nanling overlooks the part of China where a tropical climate permits two crops of rice to be grown each year. Southeast of the mountains lies a coastal, hilly region of small deltas and narrow valley plains; the drainage area of the Pearl River (Zhu Jiang) and its associated network of rivers occupies much of the region to the south. West of the Nanling, the Yunnan-Guizhou Plateau rises in two steps, averaging 1,200 and 1,800 metres in elevation, respectively, toward the precipitous mountain regions of the eastern Tibetan Plateau.

The Hai River, like the Pearl and other major waterways, flows from west to east. Its upper course consists of five rivers that converge near Tianjin, then flow seventy kilometers before emptying into the Bohai Gulf. Another major river, the Huai, rises in Henan Province and flows through several lakes before joining the Yangtze near Yangzhou. Inland drainage involving a number of upland basins in the north and northeast accounts for about 40 percent of the country's total drainage area. Many rivers and streams flow into lakes or diminish in the desert. Some are useful for irrigation.

China's extensive territorial waters are principally marginal seas of the western Pacific Ocean; these waters wash the shores of a long and much-indented coastline and approximately 5,000 islands. The Yellow, East China, and South China seas, too, are marginal seas of the Pacific Ocean. More than half the coastline (predominantly in the south) is rocky; most of the remainder is sandy. Hangzhou Bay roughly divides the two kinds of shoreline.

Principal rivers and drainage
China has 50,000 rivers totaling some 420,000 kilometers in length and each having a catchment area of more than 100 square kilometers. Some 1,500 of these rivers each have catchment areas exceeding 1,000 square kilometers. Most rivers flow from west to east and empty into the Pacific Ocean. The Yangzi (Changjiang or Yangtze River), which rises in Tibet, flows through Central China, and, having traveled 6,300 kilometers, enters the Yellow Sea near Shanghai. The Yangzi has a catchment area of 1.8 million square kilometers and is the third longest river in the world after the Amazon and the Nile. The second longest river in China is the Huanghe (Yellow River), which also rises in Tibet and travels circuitously for 5,464 kilometers through North China before reaching the Bo Hai Gulf on the north coast of Shandong Province. It has a catchment area of 752,000 square kilometers. The Heilongjiang (Heilong or Black Dragon River) flows for 3,101 kilometers in Northeast China and an additional 1,249 in Russia, where it is known as the Amur. The longest river in South China is the Zhujiang (Pearl River), which is 2,214 kilometers long. Along with its three tributaries, the Xi, Dong, and Bei—West, East, and North—rivers, it forms the rich Pearl River Delta near Guangzhou, Zhuhai, Macau, and Hong Kong. Other major rivers are the Liaohe in the northeast, Haihe in the north, Qiantang in the east, and Lancang in the southwest.

Because the river level drops precipitously toward the North China Plain, where it continues a sluggish course across the delta, it transports a heavy load of sand and mud from the upper reaches, much of which is deposited on the flat plain. The flow is channeled mainly by constantly repaired manmade embankments; as a result the river flows on a raised ridge fifty meters or more above the plain, and waterlogging, floods, and course changes have recurred over the centuries. Traditionally, rulers were judged by their concern for or indifference to preservation of the embankments. In the modern era, China has undertaken extensive flood control and conservation measures.

Flowing from its source in the Qingzang highlands, the Yellow River courses toward the sea through the North China Plain, the historic center of Chinese expansion and influence. Han Chinese people have farmed the rich alluvial soils of the plain since ancient times, constructing the Grand Canal for north-south transport (see History of China - Imperial era). The plain itself is actually a continuation of the Dongbei (Manchurian) Plain to the northeast but is separated from it by the Bohai Gulf, an extension of the Yellow Sea.

Like other densely populated areas of China, the plain is subject not only to floods but to earthquakes. For example, the mining and industrial center of Tangshan, about 165 km east of Beijing, was leveled by an earthquake in July 1976 that was believed to be the largest earthquake of the 20th century by death toll.

The Qinling Mountains, a continuation of the Kunlun Mountains, divides the North China Plain from the Yangtze River Delta and is the major physiographic boundary between the two great parts of China Proper. It is in a sense a cultural boundary as well, influencing the distribution of custom and language. South of the Qinling mountain range divide are the densely populated and highly developed areas of the lower and middle plains of the Yangtze River and, on its upper reaches, the Sichuan Basin, an area encircled by a high barrier of mountain ranges.

The country's longest and most important waterway, the Yangtze River is navigable over much of its length and has a vast hydroelectric potential. Rising on the Qingzang Plateau, the Yangtze River traverses 6,300 km through the heart of the country, draining an area of 1.8 million sq km before emptying into the East China Sea. The roughly 300 million people who live along its middle and lower reaches cultivate a great rice- and wheat-producing area. The Sichuan Basin, favored by a mild, humid climate and a long growing season, produces a rich variety of crops; it is also a leading silk-producing area and an important industrial region with substantial mineral resources.

Second only to the Qinling range as an internal boundary is the Nanling, the southernmost of the east-west mountain ranges. The Nanling overlooks the part of China where a tropical climate permits two crops of rice to be grown each year. Southeast of the mountains lies a coastal, hilly region of small deltas and narrow valley plains; the drainage area of the Pearl River and its associated network of rivers occupies much of the region to the south. West of the Nanling, the Yunnan-Guizhou Plateau rises in two steps, averaging 1,200 and 1,800 m in elevation, respectively, toward the precipitous mountain regions of the eastern Qingzang Plateau.

The Hai River, like the Pearl River and other major waterways, flows from west to east. Its upper course consists of five rivers that converge near Tianjin, then flow seventy kilometers before emptying into the Bohai Gulf. Another major river, the Huai River, rises in Henan Province and flows through several lakes before joining the Pearl River near Yangzhou.

Inland drainage involving a number of upland basins in the north and northeast accounts for about 40 percent of the country's total drainage area. Many rivers and streams flow into lakes or diminish in the desert. Some are useful for irrigation.

China's extensive territorial waters are principally marginal seas of the western Pacific Ocean; these waters wash the shores of a long and much-indented coastline and approximately 5,000 islands. The Yellow Sea, East China Sea, and South China Sea, too, are marginal seas of the Pacific Ocean. More than half the coastline (predominantly in the south) is rocky; most of the remainder is sandy. The Bay of Hangzhou roughly divides the two kinds of shoreline.

Climate
The climate of China varies greatly. The northern zone (containing Beijing) has summer daytime temperatures of more than 30 degrees Celsius and winters of Arctic severity. The central zone (containing Shanghai) has a temperate continental climate with very hot summers and cold winters. The southern zone (containing Guangzhou) has a subtropical climate with very hot summers and mild winters.

Northern China has wet summers and dry winters. Further south it is warmer and in the valley of the Yangtze River the winter is milder with a little rain. In the far south conditions are hot all year round. June to September are the wettest months when the summer monsoon blowing in from the south and southeast brings much rain.

Due to a prolonged drought and poor agricultural practices, dust storms have become usual in the spring in China. Dust has blown to southern China and Taiwan, and has even reached the West Coast of the United States.