Abstract
The soil series is incorporated at the lowest and most detailed level of the soil classification system (Soil Survey System, 2006). The string of terms that comprise the taxonomic classification of a soil reveals many specific soil properties. The terms themselves are numerous and cumbersome. Meanings of these terms are not readily apparent and diminish the value of utilizing the classification system. A simplified approach is needed using field determination of observable and textural characteristics of the soil to establish soil classification. Observable and textural soil properties are readily perceived and immediately useful when making local interpretation for land use. A classification method based on this approach will facilitate the exchange of soils information.
The objectives of this study was attempted to group the soil series established by high mountain forest soil surveys into different forest soil management divisions (FSMDs) with Observable and textural soil properties in the fields, and to reduce the soil series numbers as the consultations for forest soil management and treatment in high mountain in Taiwan. Totally 7,917 soil survey data (classified into 107 soil series) were rearranged and classified. Three classifying criteria were selected, including soil slope(SL), solum thickness, and A horizon thickness (AT). In conclusion, 107 soil series were grouped into 18 FSMDs. The results of this study obviously reduced the soil series numbers and solved the persecution of too many soil series established. The preliminary 18 FSMDs of this study are flexible associated with local environment, climate, kind of trees and land area for suitable forest landuse and management.