| 释义 |
latosol Soil Science.|ˈlætəsɒl|
[f. laterite + -o + -sol.]
(See quot. 1949.)
1949C. E. Kellogg in Technical Communications Commonwealth Bureau Soil Sci. No. 46. 79 We should like to suggest that some new term be adopted to comprehend all the zonal soils in tropical and equatorial regions having their dominant characteristics associated with low silica⁓sesquioxide ratios of clay fractions, low base-exchange capacities, low activities of the clay, low content of most primary minerals, low content of soluble constituents, a high degree of aggregate stability, and (perhaps) some red colour. The word ‘Latosol’ has been proposed as the name for this group at the categorical level of suborder... It is a collective term for those zonal soils previously called ‘lateritic soils’ where the characteristics just mentioned were dominant. 1955K. Lawton in F. E. Bear Chem. of Soil ii. 68 In the group of soils considered to be laterites or latosols, aluminum and iron may make up a large proportion of the soil mass... Some ferruginous latosols contain as much as 60 per cent Fe2O3 and thereby could be classified as low grade iron ore. 1965B. T. Bunting Geogr. Soil xvii. 199 In S. America, dark latosols occur in humid areas or on base-rich rocks; red latosols on acid materials and brown latosols on ash or basaltic terrain. |