Tropical trees | Tree Biology скачать в хорошем качестве

Tropical trees | Tree Biology

This grouping of terms is used in the “tropical trees” section of the tree biology chapter. Temperate & tropical are terms that refer to climate based on rainfall and temperature; they’re two of the five major categories of the Koppen climate classification system. Temperate climates have 4 distinct seasons, with average monthly temperatures during warm seasons over 50F/10C and cold seasons over 27F/3C. Most people live in temperate zones. Tropical climates have average monthly temperatures over 64F/18C. There is significant rainfall, intense sunlight, and high temperature/humidity year round. There are two "seasons" - wet & dry. Because of the different climate, tropical trees have different physiology and anatomy. They typically lack annual rings and may have aerial and buttress roots. Aerial roots grow directly from the woody branches and trunks. When they reach the ground, they can act as props and can draw in additional nutrients. Buttress roots are massive aboveground roots that extend great distances. They offer more reinforcement for tall trees during storms, and can also collect litter and provide oxygen in waterlogged soils.