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are found in humid areas along the equator and its sides, evergreen, wet, more than
30,
meters high trees, coarse-stemmed vines, and rainforests with woody and herb-attached plants. These areas are hot and rainy all year round, with an average annual temperature of
26
degrees C or more, a monthly average temperature of more than
20
degrees C, annual precipitation
2500
to
4500
mm, evenly distributed throughout the year, with no significant dry season. There are many kinds of plants, tall trees have the advantage, the community structure is complex, and the trees are layered. Tall trees often have plate-like roots, in addition, gas rooting, supporting roots and old stem flowering phenomenon is also common. Evergreen large feathery compound leaves on a number of drip leaf tips. Climbing plants, especially woody rattan, are rich in endo-plants, and there are woody ferns and large leafy herbs under the forest. A wide variety of animals, representing animals such as orangutans, gibbons, , rhinos, elephants, dragonflies, pigs and so on. Rainforests are mainly distributed in the Amazon Basin in South America, the Congo Basin in Africa and some islands in Southeast Asia, as well as in Xishuangdana, southern Taiwan and southern Hainan Island. Biological diversity is very high, biological resources are very rich. It plays an important role in maintaining the balance of atmospheric oxygen and carbon dioxide.
