Terrestrial Ecosystem Survey
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A systematic inventory based on the concept that within the landscapei there are naturally occurring ecosystems with unique sets of properties. These terrestrial ecosystems form a continuum and can be recognized at different levels in classification systems. The soils component of the ecosystem is inventoried through the use of “Soil Taxonomy,” U.S. Department of Agriculture Soil Conservation Service Handbook No. 436, and the “Terrestrial Ecosystem Vadose and Phreatic Survey Procedure,” a Forest Service handbook. The vegetation component of the ecosystem is inventoried through use of the International Classification and Mapping of Vegetation, United Nations Educational, Scientific, and Cultural Organization, and the above-mentioned Forest Service handbook.