Geography and climate

Geography and climate
Main article: Geography of China
See also: Environment of China

Composite satellite photo.

Terrace rice fields in Yunnan.

Snowy mountains in Diqing.

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. On the edges of the Inner Mongolian plateau in the north, grasslands can be seen. Southern China is dominated by hills and low mountain ranges. In the central-east are the deltas of China's two major rivers, the Huang He and Yangtze River. Most of China's arable lands lie along these rivers, and they were the centers of China's major ancient civilizations. Other major rivers include the Pearl River, Mekong, Brahmaputra and Amur. Yunnan Province is considered a part of the Greater Mekong Subregion, which also includes Myanmar, Laos, Thailand, Cambodia, and Vietnam.[45]

Main geographic features and regions of China.

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. During many dynasties, the southwestern border of China has been the high mountains and deep valleys of Yunnan, which separate modern China from Burma, Laos and Vietnam.

The Paleozoic formations of China, excepting only the upper part of the Carboniferous system, are marine, while the Mesozoic and Tertiary deposits are estuarine and freshwater, or else of terrestrial origin. Groups of volcanic cones occur in the Great Plain of north China. In the Liaodong and Shandong Peninsulas, there are basaltic plateaus.

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.

Due to a prolonged drought and poor agricultural practices, dust storms have become usual in the spring in China.[46] Dust has blown to southern Mainland China and Taiwan, and has reached the West Coast of the United States. Water, erosion, and pollution control have become important issues in China's relations with other countries.




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