| 释义 |
pedosphere Geol.|ˈpɛdəʊsfɪə(r)|
[f. pedo- + sphere n.]
The earth's soil layer.
1938S. Mattson in Lantbrukshögskolans Ann. V. 261 Soils might be said to represent the sum of the mechanical and the products of the chemical interaction of the four spheres: the lithosphere, the hydrosphere, the atmosphere and the biosphere. They constitute a dispersed system in which the material from these four spheres alternate as dispersed phase and dispersion medium. To this sphere of spheres the name of pedosphere has been given. 1946Nature 6 July 31/1 G. A. Maximovich..has calculated the average porosities of different types of rocks and has also calculated the average porosities of the geospheres. These, in percentages, are as follows: pedosphere (soils), 55; [etc.]. 1968R. W. Fairbridge Encycl. Geomorphol. 416/1 On top of this [sc. the lithosphere] the continents have an additional soil layer or pedosphere with a depth generally of only 1–2 meters. |
