? 發問於 科學及數學地理學 · 1 十年前

soil classification

知唔知 latosol 和 oxisol 有無分別,還是同一樣的 soil type 呢?

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  • 1 十年前
    最愛解答

    latosol 跟 oxisol是同一樣的 soil type (土壤)

    Let me give you some information above them:

    ● Soil ●

    Soil, comprising the pedosphere, is positioned at the interface of the lithosphere with the biosphere, atmosphere, and hydrosphere. It consists of mineral and organic matter, including living organisms. Soil formation, or pedogenesis, is the combined effect of physical, chemical, biological, and anthropogenic processes on soil parent material resulting in the formation of soil horizons.

    Soil is among our most important natural resources because of its position in the landscape and its dynamic, physical, chemical, and biologic functions. While the general concept of soil is well established, the definition of soil varies, according to the perspective of the discipline or occupation using soil as a resource.

    ★ 土壤 ★

    土壤是地球陸地上能夠生長植物併產生收穫的疏鬆表層。土壤一般分成六層。O層是枯枝落葉層,A層是腐殖質層。E層是淋溶層。以上三層為表土層。B層是澱積層。C層是風化層。R層是岩石層。以上三層為心土層。「資源」是對人類可以利用而言的,因此,土壤資源是指在一定科學技術條件下和一定時間內可以為人類利用的土壤。

    土壤有五大功能:

    1.無機有機質的循環

    2.生物棲息地

    3.建築物地基

    4.水分供應及潔靜

    5.支持植物生長

    ▲ oxisol ▲

    Oxisols are an order in USA soil taxonomy, best known for their occurrence in tropical rain forest, 15-25 degrees north and south of the Equator. Some oxisols have been previously classified as laterite soils.

    The main processes of soil formation of oxisols are weathering, humification and pedoturbation due to animals. These processes produce the characteristic soil profile. They are defined as soils containing at all depths no more than 10 percent weatherable minerals, and less than 10 percent base saturation. Oxisols are always a red or yellowish color, due to the high concentration of iron(III) and aluminium oxides and hydroxides. In addition they also contain quartz and kaolin, plus small amounts of other clay minerals and organic matter.

    The word "oxisol" comes from "oxide" in reference to the dominance of oxide minerals such as bauxite. In the FAO soil classification, oxisols are known as ferralsols.

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    You may visit the web site of Wikipedia:

    http://en.wikipedia.org/wiki/Main_Page

    Hope I can help you ^v^

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