Climate, Geographical Location and Economy of Hainan Province

Geographical Topography of Hainan Province Map of Hainan Province (Land) Hainan Island is low around and high in the middle, with Wuzhishan and Ying Ge Ridge as the uplift core and gradually descending to the periphery. Mountains, hills, terraces and plains form a circular layered landform with obvious cascade structure. Rivers Most rivers in Hainan Island originate in the middle, and the Nandu River in the north is 3 14 km long. Changhua River in the west is 230 kilometers long; Wanquan River in the east is 162km long. There are few real lakes in Hainan Island, but there are many artificial reservoirs, such as Songtao Reservoir, Niululing Reservoir, Daguangba Reservoir and Linan Lake. It is the second largest island in China, with a land area of 35,354 square kilometers and a sea area of about 265,438+10,000 square kilometers. Climate resources: Hainan Island is located in the northern edge of the tropics and belongs to the tropical monsoon climate. It has always been known as a "natural greenhouse". There is no winter and long summer, the annual average temperature is 22~26℃, and the accumulated temperature is ≥ 10℃ and 8200℃. The coldest January and February temperatures still reach 16℃-2 1. Hainan Island is an ideal species breeding base in South China, with early spring, rapid temperature rise, large daily temperature difference, frost-free all year round and warm winter. Hainan Province is abundant in rainfall, with an average annual rainfall of 1639 mm, with obvious rainy season and less rainy season. May-65438+10 is the rainy season every year, and the total rainfall is about 1500mm, accounting for 70-90% of the total annual rainfall. The main rain sources are frontal rain, thermal thunderstorm and typhoon rain. The rainy season is 165438+ 10 to April of the following year, accounting for only 10 of the annual rainfall. Location and Territory Hainan Province is located at the southernmost tip of China, bounded by Qiongzhou Strait and Guangdong Province in the north, facing the Democratic Republic of Viet Nam in the Beibu Gulf in the west, facing Taiwan Province Province in the South China Sea in the east, and bordering the Philippines, Brunei and Malaysia in the southeast and south. The administrative areas of Hainan Province include Hainan Island, Xisha Islands, zhongsha islands, the islands and reefs of Nansha Islands and their sea areas. The total land area of the province (including Hainan Island and Xisha, Zhongsha and Nansha Islands) is 35,000 square kilometers, and the sea area is about 2 million square kilometers. Hainan Island is shaped like an oval Sydney, running from northeast to southwest, with a total area of 33,900 square kilometers (excluding satellite island). It is the second largest island in China after Taiwan Province Island. Qiongzhou Strait, separated from Hainan Island and Leizhou Peninsula, is about 18 nautical mile wide. Zengmu shoal in Nansha Islands is the southernmost territory of China. It is the largest trans-latitude provincial administrative region in China.