单词 | andic |
释义 | andicadj. Soil Science. Designating a soil or soil horizon typically characterized by the presence of weathered volcanic glass and, when found at the surface, a high proportion of organic matter. Also: relating to or characteristic of such a soil. ΘΚΠ the world > the earth > structure of the earth > constituent materials > earth or soil > [adjective] > spec horizon palaeosolic1956 andic1960 oxic1960 salic1960 spodic1960 1960 Soil Classif.: 7th Approximation (U.S. Dept. Agric.) 137 Mollic Andic Umbraquepts... The subgroup is provided tentatively for Umbraquepts that have dominance of volcanic ash and pumice, or of allophane. 1975 Philos. Trans. (Royal Soc.) B. 272 287 There is a great extent of andosols or andic soils in the New Hebrides islands. 1998 Ecology 79 832/1 Andic soils stabilize organic matter and retard decomposition. 2012 H. Eswaran et al. in R. Lal & B. A. Stewart World Soil Resources & Food Security iii. 32 Soils formed on volcanic ash and cinders and having andic properties are distributed along the circum-Pacific belts. This is a new entry (OED Third Edition, March 2013; most recently modified version published online December 2021). < adj.1960 |
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