Rainforests exist all over the world. They are present not only in the tropics, but also in the regions with mild climate, such as the United States, Canada and Russia. The peculiarity of rainforests in those regions is that they receive heavy rains throughout the year, just like tropical ones, and possess a vast variety of trees. However, they do not receive as much sunlight as the forests in the tropics.
Tropical rainforest are divided into two main kinds: equatorial evergreen and moist ones. Equatorial rainforests are believed to be real rainforests. They get more than 2,000 mm of rain every year. These forests are filled with diverse birds and animals and are covered by verdure of high altitude. About 60% of all the wet tropical forests of the world belong to the equatorial type. They are located close to the equator where the weather mostly stays the same all the year round and the solar day is constantly long. Equatorial rainforests are widely spread throughout the lowlands of Amazonia, the Congo River Basin, the islands of Indonesia, and Papua New Guinea.
Tropical moist forests are located further away from the equator, in the areas where the level of rainfall and the length of the day differ by season. This type of forests receives about 1,270 mm of rain every year. As opposed to equatorial rainforests, moist forests experience the dry season. During this time plenty of trees lose their leaves, letting more sunlight reach the ground. This causes the growth of understory vegetation which cannot be found in the equatorial forest of lowlands. Moist forests are located in South America, the Caribbean, the West of Africa, and Southeastern Asia. They are especially widespread in Sri Lanka, Burma, Vietnam and Thailand.
Rainforests can also be either primary or secondary. Primary ones have preserved their original condition and have no traces of human intervention. They possess abundant canopy and several layers of verdure beneath it. There is usually little vegetation on the ground of these forests because of the lack of light. Primary rainforests are very diverse in terms of biological species.
Secondary rainforests experienced intervention to a certain extent. They appear either from degraded forests which have undergone logging or arise in the spaces cleared by agriculture. Their trees are smaller and less diverse, and ground vegetation is dense. These forests are called “jungle”.
Rainforests exist all over the world. They are present not only in the tropics, but also in the regions with mild climate, such as the United States, Canada and Russia. The peculiarity of rainforests in those regions is that they receive heavy rains throughout the year, just like tropical ones, and possess a vast variety of trees.