What are the climatic characteristics of tropical rainforests?

Tropical rainforest climateThe characteristics are as follows:

1. The tropical rainforest climate is characterized by high temperature and rain all year round, with an average monthly temperature of 25-28 and an annual precipitation of more than 2000 mm. The rainfall season is evenly distributed, and there are no dry periods.

2. Tropical rainforests are mainly distributed in tropical climate areas within 5 10 degrees north and south latitudes of the equator. The average annual temperature is 25 30, the average temperature of the coldest month is also above 18, and the extreme maximum temperature is mostly below 36.

3. Located in the tropics, it is the main reason for the formation of tropical rainforest climate with high temperature throughout the year.

4. Affected by the equatorial low pressure throughout the year, the prevailing updraft is the main reason for the formation of tropical rainforest climate with rainy weather throughout the year.

The tropical rainforest climate is characterized by high temperatures and rainfall throughout the year.

There is no significant seasonal distinction. The annual variation of solar radiation is small, and because the sun passes through the zenith twice before and after the spring and autumn equinoxes in a year, the annual variation of meteorological elements has the characteristics of bimodal type.

The annual variation of solar radiation is small, and because the sun passes through the zenith twice before and after the spring and autumn equinoxes in a year, the annual variation of meteorological elements has the characteristics of bimodal type. The average monthly temperature varies between 24-28 in a year, and the annual temperature difference is generally not more than 5, especially in the ocean, usually not more than 1. The diurnal variation of temperature is larger than that of the year, and the diurnal range can reach 10-15.

However, the daily maximum temperature rarely exceeds 35, and the daily minimum temperature rarely falls below 20.

Introduction

For example, the Congo River basin in Africa is more continental than the tropical rainforest climate of Asia and South America, and there are places with less rainfall, such as Libreville in Gabon, which receives 200-300 mm of rainfall per month from October to May, compared to only 5 mm per month.

In addition, there are also arid and rainy areas in the ocean, such as Malden Island in the Pacific Ocean (4°S, 155°W), with only 730 mm of annual precipitation. Alpine regions with a tropical rainforest climate with lower temperatures, but their annual variation is still minimal. These regions, from the foothills to the summits, can have climates ranging from tropical rainforests to year-round snow, presenting a variety of natural landscapes similar to those from the equator to the polar regions, with the most colorful vertical distribution.

It is divided into two seasons: drought and rain.

Tropical rainforest climateIt is characterized by high temperatures and rainfall throughout the year. It is humid all year round, and the relative humidity of the air is more than 95%. AveragePrecipitationMore than 2032 mm per year, more than the annual evaporation.

There is no significant seasonal variation, with temperatures generally around 30 during the day and about 20 at night.

The topography of the rainforest region is complex and varied, from lowland plains with rocky hills to highland canyons with streams. The landscape creates a rainforest landscape with many forms. In the forest, quiet ponds, rushing streams, and cascading waterfalls are everywhere; Towering trees, tangled vines.

Lush flowers and plants are intertwined into a green labyrinth.

Soil and animals

The typical soils developed under the tropical evergreen rainforest are brick red soil, which is distributed in areas with high terrain, good drainage and relatively few rainy seasons, and red soils with ash phenomenon, and the latter is mainly distributed in areas with abundant precipitation, forest canopy and lack of herbaceous vegetation in each season.

The rainforest is home to a wide variety of animals, but is dominated by small, arboreal animals. Another characteristic is that there are many species and few individual species. Especially for insects in the rainforest, it is much easier to find a hundred insects than a hundred insects of the same species. Scientists.

It is believed that there are many rainforest insects that are not recognized today.

Elephant. Large animals, such as hippos, tend to be found only at the edge of rainforests or in slightly open river valleys.

Areas where tropical rainforests are found, with high annual rainfall, usually higher than 1800 mm, and in some places up to 3500 mm. FullThe annual rainfall is evenly distributed, humid all year round, and the relative humidity of the air is more than 95%.。The average precipitation is more than 2032 mm per year, which is more than the annual evaporation.

There is no significant seasonal variation, with temperatures generally around 30 during the day and about 20 at night.

The tropical rainforest climate, also known as the equatorial rainy climate, is mainly distributed between 10° north and south latitudes on both sides of the equator (near the equator). The average monthly temperature is between 25-28, and the annual precipitation can reach more than 2000 mm. The seasons are evenly distributed and there are no dry periods.

It is mainly found in the Amazon plain of South America, the Congo Basin and the coast of the Gulf of Guinea in Africa, most of the Malay Archipelago in Asia and the southern part of the Malay Peninsula. Significant features: high temperature throughout the year, rainy and small temperature difference.

Causes of the tropical rainforest climate

Due to the influence of topography, ocean currents and monsoons, the tropical rainforest climate in Africa is limited to the Congo River basin in the Congo Basin of Africa and the coastal area of the Gulf of Guinea.

Under the influence of the southwest monsoon and the warm current of Guinea, the moist water vapor will penetrate deep from the estuary into the basin, and under the influence of the equatorial depression, the convergence will rise, and the rainfall will be abundant throughout the year. The continental characteristics of tropical rainforests are more pronounced.

The characteristics of tropical rainforest climate: high temperature and rain throughout the year, no obvious seasonal difference, the average annual temperature is 25-30, the average temperature of the coldest month is above 18, the extreme maximum temperature is mostly below 36, and the annual precipitation is more than 2000mm.

The tropical rainforest climate is mainly distributed between 10 degrees north and south latitudes. Specifically, it is mainly distributed in the Amazon River Basin in South America, the Congo River Basin, the Gulf of Guinea, and the eastern part of Madagascar Island in Africa, the southwest coast of the Indian Peninsula, the Bay of Bengal coast, the southern Malay Peninsula, the west coast of the Indochina Peninsula, the Philippine Islands and Irian Island, the area from Sumatra to New Guinea Island in Oceania, and the northeastern part of Australia.

The climate of the tropical rainforest is mainly influenced by latitudinal factors

1.Solar radiation: The amount of solar radiation is in the range of 100-180+ cm * year. makes it high temperatures throughout the year. Areas with even more intense solar radiation will become deserts.

2.Atmospheric circulation: Located in the equatorial low pressure zone, the trade winds gather near the equator and converge to rise, and the water vapor contained in it is easy to form clouds and cause rain.

3.Terrestrial and marine impacts. The tropical rainforest climate is located near the sea or in large river basins, which gives it abundant rainfall and small temperature differences. The terrain is low, which is suitable for rainforest growth.

4.Vegetation affects the transpiration of trees strongly, making the environment more humid.

Tropical rainforests are one of the most precious resources that the Earth has given to all living beings on Earth. Since more than 25% of modern medicines are now extracted from tropical rainforest plants, tropical rainforests are known as the "world's largest pharmacy". At the same time, because the photosynthesis of many rainforest plants has a particularly strong ability to purify the earth's air, among which the Amazon rainforest alone produces 1 3 of the world's total oxygen, so it has the reputation of "the lungs of the earth".

The climate of tropical rainforests is characterized by high temperature and rain throughout the year, and there is no obvious seasonal difference. In areas where tropical rainforests are found, annual rainfall is high, usually higher than 1,800 mm. Rainfall is evenly distributed and humid all year round.

It is mainly found in the Amazon Plain of South America, the Congo Basin and the coast of the Gulf of Guinea in Africa, most of the Malay Archipelago in Asia and the southern part of the Malay Peninsula. It is mainly distributed in the Amazon River Basin of South America, the Congo River Basin of Africa, the Gulf of Guinea, the southwest coast of the Indian Peninsula in Asia, the Malay Peninsula, the west coast of the Indochina Peninsula, the Philippine Islands and Irian Island, and Oceania from Sumatra to New Guinea.

Threats

The climate of tropical rainforests is mostly tropical rainforests; The rainforest is the world's largest onshore oxygen supply station and carbon dioxide absorber, and is the lungs of the earth. However, extensive logging and fires have caused the loss of large areas of tropical rainforest. The tropical rainforest climate is also threatened with extinction.

There is an urgent need to protect tropical rainforests. The rainforests of the Amazon are in grave danger because they are being deforested at an alarming rate to clear land for crops or raise livestock for the U.S. meat market.