Reference: ihouseedcity/~ hm 1203/ biosphere /TRF
Amazon rainforest is located in the tropical rain forest of South America. Tropical rain forest is a forest vegetation in tropical areas, with abundant rainfall and basically no drought in soil moisture. Tropical rainforests are mainly distributed in river basins, islands and hilly areas between north and south latitudes 10 degrees, among which Amazon basin in South America and Congo basin in Africa are the most extensive, while Southeast Asia is relatively scattered. The distribution of tropical rain forest can be subdivided into wet rain forest, monsoon rain forest and mountain rain forest. The global rainforests are mainly distributed in India, New Guinea, Myanmar, Malaysia, Philippines, Peru, Colombia, Bolivia, Venezuela and Brazil. Among them, Brazil's Amazon basin has the largest rainforest. The Amazon basin in South America is the representative of tropical rain forest. The Amazon river basin is the largest river in the world, spanning the north and south of the equator. Although the surface is covered with trees, most areas are barren, and only 4% of swamps that are often flooded have fertile soil. The Amazon River is not only a river, but also a forest with 1 100 tributaries. Rivers in the tropical rain forest are channels, and the equator passes through the mouth of the Amazon River. In the area north of the equator, the rainy season is from March to July, and in the area south of the equator, it is from 10 to 1 month. So the river will rise and fall, first north and then south. The river reaches both sides of the river bank, flooding the plants within 80- 100 km offshore, forming a submerged forest. Some trees submerged in the forest are short of oxygen at their roots and temporarily suffocated, just like dry branches. After the water recedes, the young leaves grow and revive. The most frequent forest fires on earth also occur in the Amazon River basin. It usually happens in the dry season, and the fire will last for six to ten weeks. In fact, China and Hongkong were originally tropical rain forest areas; Because of the long-term development, only sporadic traces are left. Evidence from animal archaeology shows that humans appeared in China and Hongkong 6000 years ago. Before human habitation, most parts of China and Hongkong were covered by subtropical rainforests. There are animals in the tropical rain forests of Southeast Asia, including tigers, elephants, leopards, gibbons, rhinoceroses and hornbills. However, before 184 1, all these rainforests disappeared, but why they disappeared is still a mystery. The last remaining rain forest is the "Feng Shui Forest" near the village and the small rain forest on the mountain. There are many animals in the tropical rain forest, including mammals, reptiles, birds and amphibians, such as leopards, monkeys, parrots, tigers, orangutans, crocodiles, lizards, sloths, frogs, elephants, peacocks, bears, hummingbirds and bats. There are many insects, such as beetles, moths, ants, butterflies and so on. And insects are much bigger than ordinary insects, as big as two boards. I hope you can learn more about the tropical rain forest. Functional tropical forest not only has the function of protecting and regulating the earth's environment, but also breeds various animals and plants, which is its greatest feature in the ecosystem. Especially in the hot and humid climate, the tropical rain forest has formed the ecosystem with the most biological species on the earth. Although its area only accounts for 6% of the earth's land area, it is really amazing that at least half of the creatures in the world grow here. From these tropical forests, in addition to firewood, wood, food and industrial raw materials, many organisms can also be used as "genetic resources" and are indispensable sources for crop variety improvement and medical development. Therefore, tropical forests provide mankind with endless benefits, including unknown possibilities. Many plants in the tropical rain forest can be refined into medicine. In addition, due to the rich diversity of tropical forest areas, people and forests living here have developed various changes, and different regions and nationalities have given birth to special forest culture. The destruction of tropical rain forest by human beings is the most serious problem that Cao Cao has encountered in recent years. These tropical rainforests are important living and resting environments for many animals, plants and insects on the earth, and are also closely related to various ecological environments in the biosphere. In fact, forests around the world are rapidly being destroyed by human beings, especially tropical rainforests rich in biological species. For example, the tropical rain forest in the Amazon basin in South America, Thailand and Indonesia in Southeast Asia, the area that disappears every year is quite amazing, and it will be cut down by human beings almost by the end of this century. The rainforest, which only accounts for 6% of the earth's surface, contains more than half of the wild animals, plants and insects on the earth. Only 1% of these creatures are known to humans. However, this rainforest, which had a great influence on nature, gradually disappeared due to the influx of settlers, and was replaced by farmland, pastures, dams, hydropower stations and some roads. However, these civilizations have spawned endless problems. Consequences of rainforest destruction Rainforest will absorb carbon dioxide and produce oxygen. 40% of the total oxygen on the earth is produced through the rainforests in the Asunció n River region. However, today, a large number of people use fossil fuels and cut down trees, resulting in an increase in the concentration of carbon dioxide in the atmosphere, which makes it difficult to reflect the solar radiation heat after it enters the earth's surface. The accumulated heat has raised the global average temperature and caused a serious "greenhouse effect". In addition, a quarter of the world's pharmaceutical raw materials are plants from tropical rain forests; 70% of the plants that are determined by the medical community to be effective in treating cancer grow in the rainforest. After the rainforest is cut down and turned into pasture, not only will these precious plants disappear, but two or three years later, when the vegetation on the surface of the rainforest is eaten up by grazing cattle and sheep, the rainforest will become a desert and the soil fertility will be completely reduced. The direct reasons for the decrease and deterioration of tropical forest area are excessive fire tillage (a primitive farming method, forest land is selected first, and all wild animals and plants are burned before farming), conversion of agricultural land, overgrazing, excessive use of firewood, improper logging of commercial timber and forest fires, and the background of these reasons is poverty and rapid population growth in developing countries. The influence of tropical forest destruction In the tropical rain forest, most nutrients are stored in plants, so once the forest is destroyed and continues to be over-cultivated, the soil that cannot store nutrients will deteriorate rapidly and become wasteland. Once the land is abandoned, it is more difficult to restore it to its original state. Therefore, tropical forest is an ecosystem that is very easy to be destroyed, but difficult to recover. Because of this feature, the destruction of tropical forests will not only cause fuel shortage and flood, seriously affect the lives of residents, but also lose the inherent forest culture. At the same time, with the extinction of a large number of wildlife, it also means that genetic resources will be lost forever. Especially when the function of regulating heat and water changes, the function of relaxing climate in tropical forests will be weakened; In addition, with the increase of carbon dioxide, the greenhouse effect will cause strong changes in the climate of the whole earth or local areas, which are all issues worthy of our attention. Greenhouse effect A large number of fossil fuels such as oil and coal are burned.
Release a lot of carbon dioxide
Coupled with large-scale deforestation
In particular, tropical rainforests have disappeared in large numbers.
So that the concentration of carbon dioxide in the air rises.
The surface of the earth is not easily dispersed by the radiant heat of the sun.
And raise the global temperature.
Causing the ice in the Arctic and Antarctic to melt.
The sea flooded the land. The holes in the ozone layer are widely used by human beings in air conditioning, automatic spraying, cleaning agents, foaming agents and other supplies.
After this seemingly innocuous substance is discharged into the atmosphere,
Gradually destroy the ozone layer over Antarctica.
Thereby injecting a large amount of ultraviolet rays harmful to human body.
It has led to a large increase in human skin cancer.
The marine ecosystem has been destroyed. The disappearance of tropical rainforests is the oxygen needed for life on earth.
Most of them are provided by photosynthesis of plants in tropical rain forests.
But for the sake of economic benefits,
Cut down wood
Grow coffee and tobacco.
Turn it into a livestock farm.
Coupled with local industrialization and urbanization
Destroy the rainforest
A rainforest that enriches primitive species.
Lose the function of breeding natural biodiversity. Land desertification, if the surface loses forest cover,
Will cause soil erosion.
The disappearance of forests has led to an increase in local temperature.
The land lost its barrier. The result of the land collapse became a desert.
The "fertile moon bend" recorded in the Bible
Today is a desert.
Desertification also occurs gradually in many parts of the world. The energy is less than the oil stored hundreds of thousands of years ago.
Decades of exhaustion. Improper use of energy will not only accelerate energy depletion
Produced countless environmental poisons.
And make our next generation fall into a dark age with no energy available. Protecting tropical rain forests * is very important for all countries. Apart from solving the problem of tropical forest reduction caused by poverty and rapid population growth, it is also necessary to cultivate tropical forests and rectify and strengthen tropical forest management systems. At this time, in order to give full play to its function and promote the multi-purpose utilization of forests, it is necessary to stand on the standpoint of forest residents, let them turn to forestry, find out agriculture that can replace excessive fire tillage, develop a set of agroforestry compound land use model, and further promote it in diversified ways according to the characteristics of the region. Protecting the rainforest is a plan to protect the rainforest. We can also protect the ecological environment of Taiwan Province Province by ourselves, not only reducing deforestation, but also actively planting trees. Let's join hands to plant a tree.
Amazon rain forest, also translated as Amazon rain forest, is located in the tropical rain forest of Amazon basin in South America, with an area of 7 million square kilometers (700 million hectares), which makes this rain forest full of vitality. The rainforest spans eight countries: Brazil (accounting for 60% of the forest area), Colombia, Peru, Venezuela, Ecuador, Bolivia, Guyana and Suriname, including French Guiana. Four of them named the state of the rainforest Amazon. Amazon rainforest accounts for half of the world's rainforest area and 20% of the forest area. It is the largest and most diverse tropical rain forest in the world.
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