A forest is a large area dominated by trees.[1] Hundreds of more precise definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing and ecological function. According to the widely used[5][6] Food and Agriculture Organization definition, forests covered 4 billion hectares (9.9×109 acres) (15 million square miles) or approximately 30 percent of the world’s land area in 2006.
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 gigatonnes carbon per year for tropical forests, 8.1 for temperate forests, and 2.6 for boreal forests.
Forests at different latitudes and elevations form distinctly different ecozones: boreal forests around the poles, tropical forests around the Equator, and temperate forests at the middle latitudes. Higher elevation areas tend to support forests similar to those at higher latitudes, and amount of precipitation also affects forest composition.
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.
Download free Dark Forest Background images gallery
Size: 289 KB
Image Format: .jpg
Download 📥
Size: 387 KB
Image Format: .jpg
Download 📥
Size: 76 KB
Image Format: .jpg
Download 📥
Size: 310 KB
Image Format: .jpg
Download 📥
Size: 153 KB
Image Format: .jpg
Download 📥
Size: 310 KB
Image Format: .jpg
Download 📥
Size: 1284 KB
Image Format: .jpg
Download 📥
Size: 293 KB
Image Format: .jpg
Download 📥
Size: 299 KB
Image Format: .jpg
Download 📥
Size: 104 KB
Image Format: .jpg
Download 📥
Size: 2826 KB
Image Format: .jpg
Download 📥
Size: 1083 KB
Image Format: .jpg
Download 📥
Size: 354 KB
Image Format: .jpg
Download 📥
Size: 54 KB
Image Format: .jpg
Download 📥
Size: 231 KB
Image Format: .jpg
Download 📥
Size: 1633 KB
Image Format: .jpg
Download 📥
Size: 1657 KB
Image Format: .jpg
Download 📥
Size: 3080 KB
Image Format: .jpg
Download 📥
Size: 1181 KB
Image Format: .jpg
Download 📥