This class also includes all land being actively tilled. Crop vegetation accounts for greater than 20% of total vegetation. Pasture/hay vegetation accounts for greater than 20% of total vegetation.Ĭultivated Crops -areas used for the production of annual crops, such as corn, soybeans, vegetables, tobacco, and cotton, and also perennial woody crops such as orchards and vineyards. Pasture/Hay-areas of grasses, legumes, or grass-legume mixtures planted for livestock grazing or the production of seed or hay crops, typically on a perennial cycle. Moss- Alaska only areas dominated by mosses, generally greater than 80% of total vegetation. Lichens- Alaska only areas dominated by fruticose or foliose lichens generally greater than 80% of total vegetation. This type can occur with significant other grasses or other grass like plants, and includes sedge tundra, and sedge tussock tundra. Sedge/Herbaceous- Alaska only areas dominated by sedges and forbs, generally greater than 80% of total vegetation. These areas are not subject to intensive management such as tilling, but can be utilized for grazing. Grassland/Herbaceous- areas dominated by gramanoid or herbaceous vegetation, generally greater than 80% of total vegetation. This class includes true shrubs, young trees in an early successional stage or trees stunted from environmental conditions. Shrub/Scrub- areas dominated by shrubs less than 5 meters tall with shrub canopy typically greater than 20% of total vegetation. This type is often co-associated with grasses, sedges, herbs, and non-vascular vegetation. Neither deciduous nor evergreen species are greater than 75% of total tree cover.ĭwarf Scrub- Alaska only areas dominated by shrubs less than 20 centimeters tall with shrub canopy typically greater than 20% of total vegetation. Mixed Forest- areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. More than 75% of the tree species maintain their leaves all year. More than 75% of the tree species shed foliage simultaneously in response to seasonal change.Įvergreen Forest- areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. Generally, vegetation accounts for less than 15% of total cover.ĭeciduous Forest- areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. Impervious surfaces account for 80% to 100% of the total cover.īarren Land (Rock/Sand/Clay) - areas of bedrock, desert pavement, scarps, talus, slides, volcanic material, glacial debris, sand dunes, strip mines, gravel pits and other accumulations of earthen material. Examples include apartment complexes, row houses and commercial/industrial. These areas most commonly include single-family housing units.ĭeveloped High Intensity-highly developed areas where people reside or work in high numbers. Impervious surfaces account for 50% to 79% of the total cover. These areas most commonly include single-family housing units.ĭeveloped, Medium Intensity -areas with a mixture of constructed materials and vegetation. Impervious surfaces account for 20% to 49% percent of total cover. These areas most commonly include large-lot single-family housing units, parks, golf courses, and vegetation planted in developed settings for recreation, erosion control, or aesthetic purposes.ĭeveloped, Low Intensity- areas with a mixture of constructed materials and vegetation. Impervious surfaces account for less than 20% of total cover. Perennial Ice/Snow- areas characterized by a perennial cover of ice and/or snow, generally greater than 25% of total cover.ĭeveloped, Open Space- areas with a mixture of some constructed materials, but mostly vegetation in the form of lawn grasses. Open Water- areas of open water, generally with less than 25% cover of vegetation or soil. The classification system used by NLCD is modified from the Anderson Land Cover Classification System*.ĭownload the Land Cover Classification Legend and Description.ĭownload the NLCD Land Cover Classification Legend.ĭownload the per pixel estimates of percent imperviousness legend.ĭownload the per pixel estimates of percent tree canopy legend.
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