- unit of soil classification
- 土壤分类单位
English-Chinese Dictionary of Agriculture (英汉农业大词典). 2013.
unit of soil classification
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Canadian system of soil classification — The Canadian system of soil classification is more closely related to the American system than any other. They differ in several ways. The Canadian system is designed to cover only Canadian soils. The Canadian system dispenses with a sub order… … Wikipedia
FAO soil classification — The Food and Agriculture Organization of the United Nations (FAO) developed a supra national classification, also called World Soil Classification, which offers useful generalizations about soils pedogenesis in relation to the interactions with… … Wikipedia
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soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… … Universalium
Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock … Wikipedia
Soil mechanics — is a discipline that applies principles of engineering mechanics, e.g. kinematics, dynamics, fluid mechanics, and mechanics of material, to predict the mechanical behavior of soils. Together with Rock mechanics, it is the basis for solving many… … Wikipedia
National Cooperative Soil Survey — From a Report of Bureau of Soils, U.S. Department of Agriculture, 1923. The National Cooperative Soil Survey (NCSS) in the United States is a nation wide partnership of federal, regional, state, and local agencies and institutions. This… … Wikipedia
Köppen climate classification — The title of this article contains the character ö. Where it is unavailable or not desired, the name may be represented as Koppen climate classification. Updated Köppen–Geiger climate map[1] … Wikipedia
Water content — Soil composition by phase: s soil (dry), v void (pores filled with water or air), w water, a air. V is volume, M is mass. Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture),… … Wikipedia
Geotechnical engineering — [ Boston s Big Dig presented geotechnical challenges in an urban environment.] Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. Geotechnical engineering includes investigating … Wikipedia
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