Forests

Forests are the dominant terrestrial ecosystem of Earth and are distributed around the globe. Forests account for 75% of the gross primary production of the Earth’s biosphere and contain 80% of the Earth’s plant biomass. Net primary production is estimated at 21.9 gigatons carbon per year for tropical forests, 8.1 for temperate forests, and 2.6 for boreal forests.

Human society and forests influence each other in both positive and negative ways. Forests provide ecosystem services to humans and serve as tourist attractions. Forests can also affect people’s health. Human activities, including harvesting forest resources, can negatively affect forest ecosystems.

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