climates conifers dominate, but in temperate and tropical climates forests are mainly made up of flowering plants. They are composed of conifers which produce seeds in cones. In 1997, the World Resources Institute recorded that only 20 of the world's original forests remained in large intact tracts of undisturbed forest. In contrast, secondary forest is regrowing forest following timber harvest and may contain species originally from other regions or habitats. Retrieved 26 November 2014. Rainforests change change source See also: Peat swamp forest Tropical rainforests grow in South America, the Congo, Indonesia and some nearby countries, Hawaii, and eastern Australia. Human activities, including harvesting forest resources, can negatively affect forest ecosystems. 15 Possibly a borrowing (probably via Frankish or Old High German ) of the Medieval Latin word foresta "open wood foresta was first used by Carolingian scribes in the Capitularies of Charlemagne to refer specifically to the king's royal hunting grounds. Aiding in regulating climate.
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19 Ecology edit Main article: Forest ecology Forests account for 75 of the gross primary productivity of the Earth's biosphere, and contain 80 of the Earth's plant biomass. Forests can also be classified more specifically based on the climate and the dominant tree species present, resulting in numerous different forest types (e.g., Ponderosa pine / Douglas-fir forest). The emergent layer exists in tropical rainforests. This is the most productive part of the trees where maximum food is produced. 9 Some areas covered in trees are legally defined as agricultural areas,.g. Archived (PDF) from the original on 23 November 2015. Temperature and rainfall are the two most important things for forests.
A b Chazdon, Robin. "Wildfires Ignite Forest Management Debate". World Resources Institute (1997). Many insects, spiders, snails, and worms make their homes in this rich soil. Archived (PDF) from the original on Wilcox,.P.; Kreuter,.P. Forest floor contains decomposing leaves, animal droppings, and dead trees.
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