Who is the size of the coniferous forest or the tropical rainforest?

The area of coniferous forests is large, and the area of coniferous forests includes a vast area of Siberia and north-central Canada, while the tropical rainforest is only on both sides of the equator, a small part of Africa, and the Amazon Plain is slightly larger, and the rest are scattered and much smaller than the vast Siberia and Canada!

According to the statistical report of "Forest Resources 1980", the world's forest area in 1980 was 100 million hectares, including 100 million hectares of coniferous forests and 100 million hectares of tropical rainforests. Tropical rainforests are also found in other areas, but in smaller sizes. Therefore, the area of coniferous forests is still larger.

Coniferous forests, of course, and tropical rainforests are only part of the equatorial distribution.

I also think the taiga is large.

The subarctic coniferous forest climate, also known as the subpolar continental climate, is mainly distributed in the Eurasian continent and the northern part of North America, and the latitude is about 50°N north to 55° or 65°N. Because the water vapor content in the air is not much, and the evaporation is weak, it is still a humid climate. The precipitation is concentrated in summer because the temperature is higher in summer, and the water vapor content in the air is more, and there are cyclonic rain and convective rain. Winter temperatures are low, water vapor content is low, and it is controlled by a sinking continental anticyclone, so there is little precipitation in winter.

The subarctic coniferous forest climate is rich in forest resources, and the forestry industry is developed.

Features. The winter is long and cold, and the average monthly temperature is below 0; Summers are short and warm, with average monthly temperatures above 10°C. The annual precipitation is 300 600 mm, due to weak evaporation, relative humidity.

Higher. The temperature varies greatly from year to year. This is because this area is the source of the polar continental air mass and has a high latitude, long dark nights in winter, and the solar elevation angle at noon.

It is small, and there is snow cover, and the ground radiates and cools violently, and it is not regulated by the ocean air mass. It extends into a broad belt from east to west, and because of its high latitude, the winters are long and cold; The warm season is short, and the annual temperature range is particularly large. Precipitation is scarce and concentrated in summer, but the temperature is low, evaporation is weak, and the relative humidity is high.

The natural vegetation is coniferous forest.

Distribution of flora and fauna.

The animals and plants in the subarctic coniferous forest are mainly cold-tolerant larch, spruce and other coniferous trees, with slender needle-like leaves and thick cuticles, which are important timber tree species in the world. Other tree species are relatively homogeneous, unlike tropical rainforests.

There are so many kinds of plants. Animals often have very thick fur, such as bears, foxes, squirrels, etc. Among the typical animals are reindeer.

or sable, etc.

Climatic distribution. North America: From Alaska.

To most of Labrador and Newfoundland via Canada.

Eurasia: found from Scandinavia.

From the north-central part to the east, Finland and the former Soviet Union run eastward.

Western (southern boundary) along Leningrad.

Gorky - Sverdlovsk line), the eastern part of the former Soviet Union (except for the south), and the northern part is separated from the polar cold climate by an annual evapotranspiration of 350 mm.

Predominant weather. Due to the influence of polar ocean air masses and polar continental air masses, and as the source of polar continental air masses, they are often invaded by Arctic air masses in winter and sometimes extended by tropical continental air masses in warm seasons.

Natural Belt. Subarctic coniferous forest. Boreal coniferous forests grow in subarctic coniferous forest climate zones, such as Eurasia and northern North America, north of 50°N latitude to around 55°N or 65°N.

The climate of the city:

Yakutsk, Verkhoyansk, Fort Vomilien.

Hello, we are happy to answer your questions. The difference between tropical monsoon forest and tropical rainforest is that it is a zonal confined forest vegetation formed under the tropical climate conditions of alternating dry and wet seasons.

The main difference between the vegetation of tropical monsoon forest and tropical rainforest vegetation is that the community structure is simplified, the tree layer is reduced to two layers, at least some species have no leaves in the dry season, tabular roots, stem flowers, woody vines and epiphytes are usually far less developed than rainforests, and the understory shrubs are dense and rich in species. Tropical monsoon forests are subject to climate change and can be divided into two types: deciduous monsoon forests and semi-evergreen monsoon forests (or evergreen monsoon forests).

Deciduous monsoon rainforests are distributed in tropical areas with annual rainfall of 500 to 1500 mm and monthly rainfall of less than 100 mm for more than 5 months. The lower trees are mostly evergreen. Typical deciduous monsoon forests are pumped forests.

The semi-evergreen monsoon rainforest has two layers of closed tree layers, distributed in the annual rainfall of 1500 2500 mm, the dry and wet seasons are obvious, but the high temperature and rainy season, low temperature and low rain season are combined, the area with good hydrothermal effect has two layers of closed tree layer, and some of the upper trees belong to the species of fixed deciduous leaves, and the amount of defoliation and the duration of no leaves are quite different in different drought years. The lower layer is still composed of evergreen species, and lianas are generally more abundant. There is a lack of strict boundaries between the two types of vegetation in tropical monsoon forest and tropical rainforest, showing a gradual transition continuity.

The vegetation in the tropical rainforest tremor area grows vigorously, and uncontrolled felling will cause soil erosion, so a is wrong;

The main function of the Amazon rainforest is to release oxygen, absorb carbon dioxide, etc., so b is false;

The Amazon Plain in Brazil is the largest plain in the world, where the world's largest tropical rainforest grows, it continuously absorbs the premature carbon of the diogen, supplements oxygen to the atmosphere, and has an irreplaceable role in global climate regulation, and has the reputation of "the lungs of the earth", so it is correct;

The tropical rainforest climate is hot and humid, and it is not suitable for human habitation, so d is wrong Therefore, c

Subarctic coniferous climate.

The climate of the subarctic coniferous forest is distributed in the region between 50° and 65° north latitude, from Alaska to Newfoundland in North America, and in Eurasia from the north of Scandinavia to the north of the Russian Far East. The winters are long and cold, the warm season is short, and the temperature varies greatly from year to year. The annual precipitation is 250-500mm, concentrated in the warm season.

Although the amount of snowfall in winter is not large, due to the low temperature, the evaporation and melting are slow, and the snow thickness can reach 600-700mm.

Although the annual precipitation is not much, due to low temperatures, weak evaporation, and permafrost, many of the ground are in a state of excessive humidity, and swamps are widespread. Coniferous forests are widely distributed due to the short warm season and long sunshine hours, which are suitable for the growth of conifers.