海南地处热带，地带性土壤有砖红壤、燥红土和山地赤红壤、山地黄壤等。
The zonal soils of Hainan province comprises with laterite, savanna soil, mountain lateritic red earth, mountain yellow earth, etc.
红土是在亚热带、热带湿热气候条件下风化形成的一类区域性残积土。
Laterine is a weathering and leaching residual soil under sub-tropical and tropical climate.
该站点提供大量热带土壤的剖面图，如：秘鲁的旱成土、肯尼亚的变性土、尼日利亚的淋溶土、泰国的软土、巴西的灰土、红土岩层等。
This site offers images from the tropics e. g. pictures of soil profiles: aridisol in Peru, vertisol in Kenya, alfisol in Nigeria, mollisol in Thailand, spodosol in Brazil, laterite outcrops etc.
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