Formed in Mediterranean climates, these soils owe their red colour to the leaching of clays in the wet winters, which releases iron. Leaching is rare in summer so that a carbonate horizon often builds up.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。