. Protecting and enhancing America's forests and rangelands : 1986 research accomplishments. Forests and forestry United States; Rangelands United States. Using Plants and Soil To Characterize Semiarid Plant Communities The Upper Rio Puerco Watershed in northwestern New Mexico was classified into 45 ecological phyto-edaphic (plant-soil) communities based on plant species- importance values. Species- importance values were calculated from the relative cover, relative density, and relative frequency values. The community descriptions consist of vegetation and soil surface characteristics; landfo
. Protecting and enhancing America's forests and rangelands : 1986 research accomplishments. Forests and forestry United States; Rangelands United States. Using Plants and Soil To Characterize Semiarid Plant Communities The Upper Rio Puerco Watershed in northwestern New Mexico was classified into 45 ecological phyto-edaphic (plant-soil) communities based on plant species- importance values. Species- importance values were calculated from the relative cover, relative density, and relative frequency values. The community descriptions consist of vegetation and soil surface characteristics; landform; soil series, association, or complex; ecological stage; and potential natural vegetation. The communities represented 11 vegetation series consisting of 2 woodland, 5 shrubland, and 4 grassland formations. Three soil orders, 27 soil series, 9 associations, and 3 soil complexes were identified. The combination of landform, vegetation, and soil were considered phyto-edaphic communities. A dicotomous key was developed for field identification. Phyto-edaphic communities classified on an ecological basis allow for extrapolation of research results to similar environments and provide land managers a scientific basis for interpretation of ecological succession and for predicting phyto- edaphic community response to a management prescriptions. Management costs can be reduced by utilizing the phyto-edaphic community classification system to select for a particular treatment only those communities most likely to The ability of semiarid sites to respond to management practices can be predicted by a unique combination of vegetation, soil, and landform characteristics. 16. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Forest Service. [Washington, D. C. ] : U. S. Dept. of Agriculture, Forest
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