Summary of geography knowledge in junior high schools in Xishuangbanna

Xishuangbanna is located in the Xishuangbanna Dai Autonomous Prefecture in southern Yunnan, at 21°08′~22°36′ north latitude and 99°56′~101°50′ east longitude. It is a tropical humid area south of the Tropic of Cancer. Due to the incident The angle is high, with the lowest altitude angle being 45° during the winter solstice. This area is rich in heat, warm all year round, and evergreen all year round. It has the characteristics of "always summer without winter, and autumn becomes autumn once it rains". The year is divided into two seasons, namely the rainy season and the dry season; the rainy season lasts for 5 months (late May to late October), and the dry season lasts for 7 months (late October to late May of the following year). The amount accounts for more than 80% of the annual precipitation. This area is rich in heat, warm all year round, and evergreen all year round. And because it is close to the ocean, it is controlled by the southwest monsoon of the Indian Ocean and the southeast monsoon of the Pacific Ocean. It is humid and rainy all year round, so the forests are dense and dense, and there are many plants. Therefore, Xishuangbanna is known as the "Kingdom of Plants". United Nations on October 8, 1993 UNESCO officially accepted Xishuangbanna as a national nature reserve and an international biosphere reserve. At a glance from the world map, you will find that almost all other areas at the same latitude of Xishuangbanna are vast and uninhabited deserts or Gobis. Only the 20,000 square kilometers of land here are like an emerald inlaid in a crown, which is particularly dazzling. . In this fertile land, there are 1/4 of the animals and 1/6 of the plants in the country. It is a veritable "animal kingdom" and "plant kingdom".

The scenic area includes three major areas: Jinghong City Scenic Area, Menghai County Scenic Area and Mengla County Scenic Area. There are several scenic spots in each area. There are 19 scenic spots in total and more than 800 scenic spots, with a total area of ??1202.53 square kilometers. This area has a wide variety of animal and plant resources and is known as the "tropical animal" kingdom. Many of the rare, ancient, peculiar and endangered animals and plants are unique to Xishuangbanna, arousing great interest from domestic and foreign tourists and scientific researchers. The landscape is dominated by rich and charming tropical and subtropical rainforests, monsoon rainforests, valley rainforest scenery, rare animals and colorful national culture and customs. The area has unique landscape and high reputation.

Xishuangbanna has many world's best and China's best records, including the most birds and many other records selected by the China World Records Association as the world's best and China's best.

Approved by the State Council on October 8, 1982, it was designated as the first batch of national key scenic spots.

Xishuangbanna Prefecture has a total area of ??19,582.45 square kilometers and a population of more than 1 million. It governs Jinghong City and Menghai and Mengla counties. There are more than a dozen ethnic groups living here, including the Dai, Hani, Bulang, Jinuo, Lahu, Wa, and Yao ethnic groups, including 850,000 Dai, 250,000 Han, and 250,000 other ethnic groups. It borders Laos and Myanmar, and the border is 1,069 kilometers long.

Animal and plant resources

Xishuangbanna is known as the Kingdom of Animals and Plants. Xishuangbanna is one of the first 44 key scenic spots in the country. It has more than 3 million acres of nature reserves, including 700,000 Mu is a well-protected large primeval forest, which accounts for nearly 60% of the total area of ??the state. It is surrounded by lush mountains and green waters and is famous for its beauty and richness.

There are more than 20,000 kinds of plants in Xishuangbanna, including more than 5,000 tropical plants, more than 10,000 edible plants, more than 50 kinds of wild fruits, and more than 40 kinds of fast-growing precious timber trees. Many plants are precious materials or have special uses, such as the anti-cancer drugs maytank and Gloriosa; rauwolfia to treat high blood pressure; betel nut to strengthen the stomach and repel insects; and the seed oil of Fengchuan is used for tanks, car engines and oil drilling in alpine areas. Special lubricants with viscosity-increasing and condensation-reducing dual-effect additives; tung oil can replace diesel; ylang-ylang, known as the "King of Flowers", can be made into high-grade spices; there are ancient tea trees more than 1,700 years ago; there are natural "kettles" , "umbrella"; grass that can listen to music and dance, eat mosquitoes, curare trees that seal their throats when they see blood...

The vast and dense forests provide ideal habitats for various wild animals. , there are currently 429 known species of birds, accounting for 2/3 of the total number of birds in the country, and 67 species of mammals, accounting for 16% of the total number of mammals in the country. The number of species of birds and beasts in Xishuangbanna is unmatched by other places in the country. Among them, Asian elephants, vultures, Indochinese tigers, leopards, etc. are listed as world protected animals; there are 13 species of national first-level protected animals such as bison, antelopes, and lorises, as well as many second- and third-level protected animals.

As a "flagship species", the Asian elephant is of extraordinary significance to the ecological environment. In 1977, my country declared the Asian elephant an endangered species and established a wild elephant nature reserve in Xishuangbanna. Now the living environment of Asian elephants has been significantly improved. Their number has also grown from more than 80 in the 1980s to about 300 now. my country's Asian elephants are mainly distributed in Xishuangbanna, with a small number also distributed in the nearby Pu'er [Simao] city.

Xishuangbanna is also rich in rubber. It is the second largest rubber area in the country and the rubber production ranks first in the country. It is also rich in rice, various tropical fruits and precious medicinal materials such as amomum villosum. It is a veritable "Kingdom of Plants" , "Animal Kingdom", "Green Kingdom", "Southern Medicine Kingdom".

When traveling to Banna, you can sometimes see beautiful peacocks, white pheasants, and hornbills flying in the forest; sometimes you can see elephants walking on the road; sometimes you can see antelopes, wild deer, and hares walking in the forest. Running...that love scene is so joyful. This is a spectacle and fun that is unimaginable in other places!