Oxisols are a soil order in USDA soil taxonomy, best known for their occurrence in tropical rain forest within 25 degrees north and south of the Equator. In the World Reference Base for Soil Resources (WRB), [1] they belong mainly to the ferralsols, but some are plinthosols or nitisols.

氧化物土（Oxisols） 一种老年的土壤，土壤已经化育很久（几十万年以上），除石英外，大多数矿物皆受极度风化而成为高岭土与游离氧化物，黏粒部份仅具有甚低活性土壤中仅剩余氧化铁、铝等性质者，土壤肥力很低，B 层有一氧化物层生成者，大都在红土台 ...

Oxisols are characterized by a thick subsurface layer (the oxic horizon) that contains kaolin-group clay minerals and metal oxides in a finely textured matrix with very little or no easily weathered silicates.

Oxisols are highly weathered soils of tropical and subtropical regions. They are dominated by low activity minerals, such as quartz, kaolinite, and iron oxides. They tend to have indistinct horizons.

Climate: Oxisols are the most highly weathered soil order. These soils form under year-round hot, tropical climates. Although climatic pattern may have changed over the course of the soil’s history, these soils formed under moist climates.

Oxisols (from French oxide, "oxide") are very highly weathered soils that are found primarily in the intertropical regions of the world. These soils contain few weatherable minerals and are often rich in Fe and Al oxide minerals.

Oxisols are highly weathered soils and often have a reddish, yellowish, or grayish color. They are commonly located on the gentle undulating surfaces of geologically old surfaces in tropical and subtropical regions where they occupy about 8.2 million km 2 ( Beinroth et al., 2000 ).

Oxisols are the most weathered of the 12 soil orders in the USDA soil classification system. (See Lesson 2 -- Processes of Weathering .) They are composed of the most highly weathered tropical and subtropical soils, and are formed in hot, humid climates that receive a lot of rainfall.

1999年1月1日 · Some oxisols form from in situ rock weathering or easily weathered basic rock, but many form in polycyclic sediments that have undergone weathering prior to deposition. Oxisols are present in all soil moisture regimes, but most occur in perudic, udic, or ustic soil moisture regimes.

oxisol，英语单词，主要用作名词，作名词时译为“ [土壤] 氧化土（美国土壤分类学中热带地区高度风化和淋溶的土壤）”。