单词 | solum |
释义 | solumn. 1. Soil, ground. (Chiefly Scots Law.) ΘΚΠ the world > the earth > land > ground > [noun] ground971 earthOE fleta1000 foldOE landOE floor?a1400 soila1400 margin?a1425 yird1433 sulye1434 swardc1440 leaa1475 paithmentc1480 visagea1500 crust1555 mother earth1568 solum1829 carpet1918 deck1925 dutty1925 1829 in P. Shaw Reports VII. 363 A right of absolute..property in the solum. 1894 J. Macintosh Ayrshire Nights' Entertainm. xi. 199 The solum of the old road having been assigned to the respective proprietors. 1905 Proc. Soc. Antiquaries Scotl. 39 346 The Abertay Sands..bid fair by and by to enlarge..the solum of this tract of country. 2. Soil Science. (Plural solums, sola.) The upper part of a soil profile, in which the soil-forming processes predominantly occur; spec. the A and B horizons. [Introduced (as German solumhorizont solum horizon) by B. Frosterus 1922, in Compt. Rend. de la Conf. Extraordinaire (IIIème Internat.) Agropédologique (1924) 361.] ΘΚΠ the world > the earth > structure of the earth > constituent materials > earth or soil > [noun] > horizon > specific horizons solum1928 recurrence surface1938 palaeosol1950 palaeosoil1970 1928 Proc. & Papers 1st Internat. Congr. Soil Sci. IV. 7 To the soil body has been given definitely the status of a well defined concept by the application to it of a name consisting of a single term, the Solum, by Frosterus. 1942 Technical Bull. U.S. Dept. Agric. No. 834. 49 All but small quantities or traces [of carbonates] are leached from the solums of all but the Clyde profile. 1956 Soil Sci. LXXXII. 451 In the coarser sand fractions (0.5–2mm.) weatherable mineral material such as granite, diorite, and basalt is abundant in all horizons of the sola. 1972 J. G. Cruickshank Soil Geogr. ii. 41 The minimum moisture storage in the solum will be equivalent to between 10 and 15 cm water per unit area. This entry has not yet been fully updated (first published 1913; most recently modified version published online December 2021). < n.1829 |
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