| 释义 |
vertisol Soil Sci.|ˈvɜːtɪsɒl|
Also Vertisol.
[f. vertical a. + -sol.]
A clayey soil with little organic matter found in regions having distinct wet and dry seasons, characterized by deep, wide cracks when dry and an uneven surface owing to the swelling and shrinking of the clay.
1960Soil Classification: 7th Approximation (U.S. Dept. Agric.) ix. 124/1 The central concept of Vertisols is one of soils that crack widely, and that often remoisten from water that runs into the cracks rather than from water that percolates through the soil. 1970Nature 2 May 429/1 Dark, cracking tropical clays, that is, vertisols, are characteristic of..the restricted clay plugs and back⁓swamps of the Omo Floodplain [in Ethiopia]. 1981Jrnl. Soil Sci. Soc. Amer. XLV. 668/1 In Vertisols, because of swelling and shrinking, bulk density of the soil is dependent on moisture content. |