Which plate has the most tropical rain forests?

The Amazon Plain in South America has the most tropical rain forests.

The crying Amazon jungle The world's largest tropical rain forest is in urgent need of protection. The International Conference on Tropical Timber convened by the United Nations Conference on Trade and Development opened in Geneva on 26th. The meeting pointed out that 500 million people in the world depend on the tropical rain forest and its resources, and the tropical rain forest is disappearing at the rate of 6.5438+0.2 million hectares to 6.5438+0.5 million hectares every year. In order to cope with the unfavorable situation of the continuous reduction of tropical rain forests, the conference will adopt the newly revised International Tropical Timber Agreement, so that the international community can strengthen the protection of tropical rain forests. The Amazon River is the pride of Latin American people. Flowing through Peru, Brazil, Bolivia, Ecuador, Colombia, Venezuela and other countries, it nourishes 8 million square kilometers of vast land and breeds the world's largest tropical rain forest, making the Amazon River basin the most mysterious "kingdom of life" in the world. The forests on both sides of the Amazon River are vast. Abundant rain, hot and humid climate and long-term strong sunshine provide unique conditions for the growth of plants in the Amazon River basin, making this region the largest tropical rain forest area in the world, with a forest area of 300 million hectares, accounting for13 of the existing tropical rain forests in the world, of which 87% are in Brazil. It is rich in natural resources, rich in species, complex in ecological environment and well-preserved in biodiversity, and has the reputation of "biologist's paradise" and "lung of the earth". However, the Amazon rainforest is not loved by human beings because of its wealth, and uncontrolled development has caused great damage to the local natural environment. With the development of Brazil's domestic economy, a large number of immigrants poured into the edge of the Amazon rainforest. In order to get food from nature, people use various means and tools to seize forests and reclaim farmland. With the continuous extension of highway and railway trunk lines, it is easier for farmers to go deep into the original dense forest to cut wood, burn wasteland and cultivate. In the process of reclamation, people drove heavy tractors into the forest, cut down trees and set them on fire. The ecological environment in forest areas is very fragile, and most nutrients are not in the soil, but stored in living plants. After the forest burned out, most of the nutrients drifted away with the wind. Farming on the reclaimed land, after one or two seasons, the soil is either exhausted or washed away by rain, and nothing grows. Multinational enterprises are interested in the rich local mineral resources such as iron, copper and bauxite, and do not hesitate to invest heavily in mining. According to the data of Brazil's National Bureau of Geography and Statistics, the area of rainforest destroyed in the Amazon region reaches 23,000 square kilometers every year. In the past 30 years, 1/6 of the world's largest rainforest area has been seriously damaged. Compared with 400 years ago, the forest area in Brazil has been reduced by half. Experts pointed out that the reduction of tropical rain forests not only means the reduction of forest resources, but also means the deterioration of the global environment. If the Amazon forest is completely cut down, the oxygen on which human beings depend will decrease 1/3. The deforestation of the Amazon forest has not brought more wealth to Brazilians. They just fill their stomachs, but what they bring is eternal trauma and irreparable harm to nature. Excessive deforestation causes soil erosion, soil desertification and serious soil erosion. Due to deforestation and ecological destruction, some areas of Pará and Amapa in northeastern Brazil have become the driest and poorest places in Brazil. Amazon rainforest is rich in vegetation, with 1200 different kinds of plants per square kilometer. However, with the decrease of tropical rainforests, at least 500,000 to 800,000 species of animals and plants will be extinct within a few years, and the loss of rainforest gene pool will become one of the greatest losses for mankind. In this regard, the Brazilian government has become more and more aware of the seriousness of the problem, formulated a number of environmental protection policies, and adopted various measures to strengthen the protection and monitoring of the forest environment. Environmental protection and sustainable development have become one of the government's priority goals. The Brazilian government has successively promulgated the National Environmental Law and the Amazon Ecological Protection Law. 1988, the new constitution has added provisions on environmental issues, stipulating that the Amazon region is a national heritage, and the state has the responsibility to find a way out for the sustainable development of this region. At the same time, the relevant rules for protecting ecological balance have been promulgated, and the rights and obligations of the government and citizens in protecting the environment have been put forward. Brazil's National Forestry Development Bureau has also formulated relevant laws and regulations. Individuals or institutions that have caused serious disasters to the Amazon forest due to deforestation will be prosecuted for the crime of destroying the ecological environment, and will be punished with severe legal sanctions and huge fines. At the same time, the Brazilian government has increased relevant capital investment. From 199 1 to 2002, the government invested nearly 1000 billion dollars to protect the ecology and natural resources in the Amazon region. Amazon-the largest tropical rain forest in the world, God has given mankind a treasure to live on. She is beautiful, and how to preserve her moving brilliance is people's eternal thinking.

Amazon Rainforest

Amazon Rainforest

The Amazon River in South America is the widest river with the largest flow in the world. It is rich in water all year round, nourishes 8 million square kilometers of vast land, breeds the largest tropical rain forest in the world, and is recognized as the most mysterious "kingdom of life" in the world. the Amazon

[Edit this paragraph] Amazon River

The Amazon River is located in South America. Although its length is the second in the world, its flow is the largest in the world, which is greater than the sum of the other three rivers: Nile, Mississippi and Yangtze. The Amazon river basin is also the largest in the world.

Total length: 6,296 kilometers

Source elevation: 5597 meters

Average flow: 2 1.9 million m? /s

Watershed area: 69 15000km?

Source: Naiva Domise Mifeng.

Estuary: Atlantic Ocean

The amount of water discharged from the Amazon River into the Atlantic Ocean reaches 1.84 million cubic meters per second, which is equivalent to one fifth of the total amount of fresh water discharged into the ocean by all rivers in the world. From the mouth of the Amazon River to the coast where the naked eye can't see it, the water in the ocean is not salty, and the salt content of seawater beyond 1.50 km is quite low.

The main channel of the Amazon River is 1.5 to 12 kilometers wide, and there are 3700 kilometers of channels from the estuary to the inland river. Ships can go straight to Iquitos, Peru. Smaller ships can continue to sail 780 kilometers to Cape Coward, and even smaller ships can continue to rise.

The Amazon River basin covers an area of 6910.5 million square kilometers, equivalent to 40% of the total area of South America. It extends from 5 degrees north latitude to 20 degrees south latitude, originates in the Andes, only a short distance from the Pacific Ocean, and enters the Atlantic Ocean near the equator via Peru and Brazil.

[Edit this paragraph] Source and Upstream

The source of the Amazon River flowing through the Peruvian city of Iquitos has not been officially determined until recently. It is a small stream in the peak of Naivado Moose in the Andes of Peru at an altitude of 5597 meters. It is about160km from Lima, Peru. It is located in the west of the south of Lima. It was first recognized in 197 1 and was not officially confirmed until 200 1. The stream first flows into Lake Chahu in Laurikka, and then into the Aprimak River, which is a tributary of the Kaiali River, and then joins the Maranyon River to form the main stream of the Amazon River.

Below the Valiaga River, a tributary of the maranhao River, this river flows from the Andes into the alluvial plain. It is about 2,400 kilometers from here to the Yavalli River at the junction of Peru and Brazil. The river bank is very low, and the forests on both sides are often flooded, only occasionally there are a few hills. The Amazon river has entered the Amazon rainforest.

[Edit this paragraph] Amazon Rainforest

Located in the north of South America, the Amazon River and its tributaries are a tropical rain forest with an area of 6 million square kilometers (2.3 million square miles), accounting for 40% of Brazil's total area. It reaches the Guiana Plateau in the north, the Andes in the west, the Central Plateau in Brazil in the south and the Atlantic Ocean in the east.

The Amazon River basin is the largest basin in the world, and its rain forest extends from the Atlantic coast in the east (the forest width is 320km (200 miles)) to the junction of the lowlands and the foothills of the Andes, forming a forest belt, which gradually widens to1.9km (1.2000 miles). The rainforest is extremely vast and continuous, reflecting the climate characteristics of this area: rainy, humid and generally high temperature.

Amazon rainforest contains the richest and most diverse biological resources in the world, with millions of species of insects, plants, birds and other creatures, many of which have not been recorded in science so far. Among the lush plants, there are various tree species, including hickory, laurel, palm, acacia, rosewood, Brazil nut and rubber tree. Mahogany and Amazon cedar can be used as high-quality wood. The main wild animals are jaguars, manatees, tapirs, red deer, capybara, many rodents and many monkeys.

In the 20th century, Brazil's rapidly growing population settled in the main areas of the Amazon rainforest. Residents cut down forests to obtain wood or open pastures and farmland, resulting in a sharp decline in rainforests. In 1990s, the Brazilian government and international organizations began to protect some rainforests from people's occupation, development and destruction.

East of the Andes, the Amazon rainforest is the largest rainforest in the world, which has important ecological significance. Its biomass is enough to absorb a lot of carbon dioxide. Protecting the Amazon rainforest has become an important topic this year. The Amazon rainforest relies on the very humid climate of the Amazon River basin, and the Amazon River and its tributaries 100 slowly flow through this plain with very small height difference. Manaus, a Brazilian city beside the river bank, is 0/600 from the Atlantic Ocean/KLOC.

The biodiversity of this rainforest is excellent, with 2.5 million species of insects, tens of thousands of plants, about 2,000 species of birds and mammals, living in one fifth of the total number of birds in the world. Some experts estimate that there are more than 75,000 kinds of trees and 6,543.8+0.5 million kinds of higher plants per square kilometer, among which the plant biomass is 90,000 tons.

[Edit this paragraph] Flood

Satellite images of floods in the Amazon River Seasonal rainfall often floods the Amazon River and its tributaries. In the rainy season, the average depth of the river reaches 40 meters, and it spreads 38 kilometers on average. The water rose from 165438+ 10 to June of the following year, and then fell back to 65438+ 10. The fluctuation of its tributary, the Negro River, is not at the same time as the mainstream. The rainy season begins in February or March, rises to June, and begins to decline with the mainstream. The Madeira River, another tributary, rises and falls two months earlier than the mainstream.

In the rainy season, the Amazon River flooded hundreds of thousands of square kilometers, and the flood depth was 12 to 15 meters higher than the lowest water level in some places in the dry season, and it was 6 meters higher near Iquitos. Near Taifu15m; Near Obidos 1 1 m, 4 m from the Parra River.

[Edit this paragraph] Downstream

In some places, the Amazon River is 6 to 10 km wide. In some places, the river divides into two parts, forming a complex natural river network in the middle, forming many large and small islands, less than 5 meters above the river. In the narrowest place, such as Obidos, which is 600 kilometers away from the estuary, the river width 1.6 kilometers is 600 meters deep. At this time, the river speed reaches 6 to 8 kilometers per hour. The village of Canary Island is near the big bend where the Negro River meets the mainstream, and the downstream reaches 65,438+0,000 kilometers, which is similar to the mouth of the Amazon River. The terrain is low and a large area is submerged in the water. Only the upper parts of forest trees are exposed to the water. From the Negro River to the Madeira River, the banks are very low, except for some rolling mountains near the Brazilian city of Manaus. There is a steep cliff near Obidos, 20 meters high, followed by low mountains. The lower reaches of the Amazon River may be a strait of the Atlantic Ocean.

Less than 10% of the Amazon River near Manaus, Brazil, flows into the basin below Obidos, and a small amount of water comes from the northern valley. The basin above Obidos is 5 million square kilometers, and the basin below is only1100,000 square kilometers, only 20% of the upstream. This is not counting the1100,000 square kilometers of Tokantins River Basin, a tributary of Jinkou Estuary.

There are many flat-topped hills on the north bank opposite the downstream Xinggu River, stretching for about 240 kilometers. On the south bank above the Xinggu River is the R Mountain. The cliffs constrain the banks of the Amazon River all the way to Santa Taran, and then turn to the southwest, forming another tributary of the Taparros Valley.

[Edit this paragraph] The mouth of the Amazon River

The widest point of the estuary is about 330 kilometers, and the Pala River downstream of the Tokantins River, as the last tributary, is 60 kilometers wide. Between the Pala River at the mouth of the river and the main channel of the Amazon River, there is a Marraro Island almost as big as Denmark.

shock wave

From the estuary to the north, all the way to the Guyana border 160 km, there are beaches and reefs. The tide here is called swell, and the water depth is less than 7 meters. However, the swell roared loudly, hitting the coast at the speed of 15 to 25 kilometers per hour, and the waves were as high as 1.5 to 4 meters, so the Amazon River did not form a delta. The sea water quickly swept away the sediments carried by the Amazon River.

hydrobios

There are many kinds of aquatic life in the Amazon River. Amazon dolphin is the largest freshwater dolphin in the world, with an adult size of 2.6 meters. It also eats people. They live in groups and may attack people and animals. Although many experts don't think they are that terrible, in 198 1 year, Obidos capsized and 300 people were killed. There are anacondas in the shallow waters of the Amazon river basin, which are the largest snakes in the world. They spend most of their time in the water, only sticking their nostrils out of the water, but anacondas generally don't attack fishermen. Thousands of fish, crabs and turtles live in this river.