The woods is an region by having the high density of trees (or, historically, the wooded locality placed aside for hunting). These plant communities handle big arewhen of the world & work as carbon dioxide sinks, animal habitats, hydrologic flow modulators, and soil conservers, constituting one of a first aspects of my biosphere.

Forests may be incurred altogether regions capable of with tree incubation, at altitudes as much as a tree-line, except in which natural fire frequency is as well high, or even even where a tree growing environment has been impaired by activity or man. Forests occasionally containside numbers of tree metal money in the little vicinity (e.g. tropical rain & moderate deciduous forests), however more forward types keep close at hand comparatively pack coinage all over big areas (e.g. taiga & arid montane cone-bearing forests). As a general rule, forests dominated by angiosperms are species-rich, while victims dominated by gymnosperms are not then rich, although exceptions clean survive (e.g., species-unfortunate aspen & birch fill in northern latitudes). Forests come typically at home to numbers of fauna & plant coinage, & biomass per unit area is high in comparison more vegetation types. Very much of this biomass occurs in the image below-ground in the rootage & when partly decomposed plant detritus. A woody component of forests contains lignin, which is relatively slow to decompose compared with more organic materials like cellulose or carbohydrate.

Forests come differentiated from either woodlands by the extent of canopy coverage: in a woods the branches & foliage of separate trees typically meet or even interlock, although there may be gaps of variable sizes in an vicinity known as outdoors. The forest has the thomas supplementary day and night open canopy, by having trees spaced farther apart, which allows more sunshine to penetrate to the ground between the children (look at as well: savanna). A decidous beech forest in Slovenia.

Among a major forested biomes come:

rain forest (tropical and moderate) taiga temperate hardwood forest tropical dry forest

Classification
Forests may be classified inside different ways & to different degrees of specificity. A single such way is within terms of the biome where it survive conjunctive sustaining leaf longevity of the dominant metal money (whether it is evergreen or deciduous).

Boreal forests occupy the subarctic zone & come usually evergreen plant and needle-leaved. Temperate zones support each deciduous forests (e.g., temperate deciduous forest) and evergreen plant forests (e.g., temperate rainforest).

Tropical and subtropical forests include tropical rainforest, tropical moist forest and tropical dry forest.

Physiognomy classifies forests based on their overall physical structure or even developmental stage (e.g. old growth vs. 2nd incubation).

Forests can besides become classified thomas more specifically according to a dominant tree mintage present, ensuant within many different forest types (e.g., ponderosa pine/Douglas-fir woods).

Forest management
A scientific survey of forests is known as forest ecology, while a management of forests is typically known as forestry, often by using a goal of sustainable resource extraction. Outdoors ecologists concentrate in forward system & processes, unremarkably by owning a aim of elucidating induce & result relationships. Foresters typically focus in wood extraction & silviculture, including tree regeneration and growth processes.

Forests may be damaged by logging, forest fires, acid rain, herbivores, and diseases, among other items. In the United States, most forests use at times historically been affected by homo to a few degree, though inside recent years environmental protection has helped regulate or even moderate big shell or severe impacts.