Guyana is located in the north of South America, bordering the Atlantic Ocean in the northeast, Suriname in the east, Venezuela in the northwest and Brazil in the south. The area is 210.497 million square kilometers, including land area/kloc-0 1.9685 million square kilometers and water area10.8/0/0.20 million square kilometers. It belongs to the tropical rainforest climate and is located in the equatorial low pressure area. The weather and climate are basically influenced by the trough of low pressure and its rain belt "tropical convergence zone", and the season is determined by the change of rainfall form. There are basically two rainy seasons in coastal areas (rainy season, May-July,11-65438+1October) and two dry seasons (dry season, February-April, 8-65438+1October), while inland areas The average annual precipitation in the rainforest area is more than 3,000 mm, the grassland area is about 1.600 mm, and the coastal area is about 2,300 mm. The average sunshine time in rainy season is 5 hours, and the average sunshine time in dry season is not less than 7 hours. Topographically, there is the Guyana Plateau, which is the second largest plateau in South America. The altitude is between 300 ~ 1500m, high in the west and low in the south, and gently inclines to the east and north. The basement rock series is mainly composed of Archean granite, gneiss and schist. After long-term erosion in hot and humid climate, it generally becomes a hilly plateau with a height of 300 ~ 400 meters. Erosion hills with steep slopes and mud gardens at the top are often formed in areas with hard lithology, about 1000 ~ 1500m high, such as Tumuku Ma Keshan in the southeast. The central and western regions are covered with horizontal Mesozoic and Tertiary sediments, forming a plateau similar to a table. Guyana Cooperative Republic (Guyana for short) is located in the north of South America, with a total land area of 210.5 million square kilometers. With a total population of 736,000, the people are mainly Hindus and blacks, and most of them believe in Protestantism and Hinduism. It is the only country in South America where English is the official language. It borders Venezuela in the northwest, Brazil in the south, Suriname in the east and the Atlantic Ocean in the northeast. Guyana has been inhabited by Indians since the 9th century. The Spanish invaded Guyana in the15th century and were occupied by the Netherlands in the17th and18th centuries. 18 14 The Netherlands transferred it to Britain, and 183 1 officially became a British colony and was named British Guiana. 65438+ declared its independence on May 26th, 0966. 1970 On February 23rd, the Cooperative Republic of Guyana was established. Guyana has territorial disputes with Suriname, Venezuela and other countries. In particular, Venezuela has repeatedly claimed territorial sovereignty over West Guyana to the west of essequibo river, which accounts for about two thirds of the total area of Guyana. Guyana is a member of the Commonwealth and the Union of South American Nations, and a founding member of the Caribbean Community.