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Creosote Bush Scrub
Creosote bush scrub is a North American desert vegetation type (or biome) of sparsely but evenly spaced desert plants dominated by creosote bush (''Larrea tridentata'') and its associates. Its visual characterization is of widely spaced shrubs that are somewhat evenly distributed over flat or relatively flat desert areas that receive between 2 and 8 inches of rain each year. It covers the majority of the flat desert floor and relatively flat alluvial fans in the Mojave Desert, Chihuahuan Desert, and Sonoran Desert. The dominant plants that typify this vegetation type are creosote bush (''Larrea tridentata'') and its associates, white bur-sage (''Ambrosia dumosa''), brittlebush (''Encelia farinosa'', ''Encelia actoni'', ''Encelia virginensis''), cheese-bush (''Ambrosia salsola''), Mojave yucca (''Yucca schidigera''), silver cholla cactus (''Cylindropuntia echinocarpa''), and beavertail cactus (''Opuntia basilaris ''Opuntia basilaris'', the beavertail cactus or beavertail pricklype ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vegetation Type
Vegetation classification is the process of classifying and mapping the vegetation over an area of the earth's surface. Vegetation classification is often performed by state based agencies as part of land use, resource management, resource and environmental management, environmental management. Many different methods of vegetation classification have been used. In general, there has been a shift from structural classification used by forestry for the mapping of timber resources, to floristic community mapping for biodiversity management. Whereas older forestry-based schemes considered factors such as height, species and density of the woody canopy, floristic community mapping shifts the emphasis onto ecological factors such as climate, soil type and floristic associations. Classification mapping is usually now done using geographic information systems (GIS) software. Classification schemes Following, some important classification schemes. Köppen (1884) Although this scheme is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encelia Actoni
''Encelia actoni'', also known by the common names Acton brittlebush and Acton encelia, is a species of flowering plant in the family Asteraceae. It is sometimes misspelled ''Encelia actonii''. Distribution and habitat The plant is native to southern California and neighboring areas of Nevada in the U.S. and Baja California in México. It grows in various types of open habitat, including deserts, chaparral, and grasslands. It is found in the Mojave Desert, Sonoran Deserts, Peninsular Ranges, Transverse Ranges, San Joaquin Valley, and southern Sierra Nevada. The species was named for the community of Acton in Southern California, located in an ecotone of the Mojave Desert ecoregion and of the montane chaparral and woodlands in the San Gabriel Mountains. Description ''Encelia actoni'' is a multi−branched perennial shrub, reaching in height. The branches are lined with oval to roughly triangular leaves a few centimeters long, that are gray-green and woolly in texture. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
