Implication of the World Reference Base and Soil Taxonomy Within the Framework of Bulgarian Soil Classification

• 出版年: Почвознание, агрохимия и екология
• 第一著者: TOMA SHISHKOV
• フォーマット: 論文
• 言語: ブルガリア語
• 出版事項: Agricultural Academy 2011-09-01
• 主題: soil classification; soil mapping units
• オンライン･アクセス: https://agriacad.eu/ojs/index.php/bjssae/article/view/4050
• ISSN: 0861-9425; 2534-9864

The large scale soil mapping units of the Bulgarian Soil Classification were harmonized according to the main principles of the World Reference Base for Soil Resources (2006) and Soil Taxonomy System USDA (2010). The scheme describes the Bulgarian nomenclature of the soil units based оп the concept of causality between interacting components of natural object and an ambient environment. In 1964 the Bulgarian Soil Classification (Koynov et al.) was developed for the purpose of soil survey of the county territory at scale 1: 25 000. The campaign of the systematic large soil survey at scale 1: 10 000 commenced т 1975A.s result of thatin 1976 (Yolevsky et al.) created the classification named an Extended Systematic List comprising full nomenclature of occurred mapping units through the country territory. During the years there were few classifications more in 1980, 1983 (Yolevsky et al.) and in 1992 (Penkov et al.) which had generally theoretic aspect аnd limitation at soil mapping. In 1993 based on the classification from 1976 the Updated version of the full systematic list of the soil units in Bulgaria was created at the National Soil Agency respectively Ministry of Agriculture. Since 1993 this version was applied оn the national level in the GIS аnd reference datasets. In a given scheme gualifiers which provide information, directly or indirectly, about Пе defined soil textural classes (which describe combined particle-size classes) were not applied as well as the qualifiers related to some present огr future physical soil properties аrе not included.