| Elemental Geochemistry of a Soil Chronosequence on Basalt onNorthern Hainan Island, China |
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| 作者姓名： | 黄成敏 龚子同 何毓蓉 |
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| 作者单位： | [1]DepartmentofEnvironmentalScienceandEngineering,SichuanUniversity,Chengdu610065,China [3]InstituteofSoilScience,ChineseAcademyofSciences,Nanjing210008,China [4]InstituteofMountainDisasters＆Environment,ChineseAcademyofSciences,Chengdu610041,China |
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| 摘 要： | With increasing soil age, the contents of Sr, Ba and ratios of Sr/Be in soils tend to decrease, whereas the contents of V, Sc, Ni, Cr, Co and ratios of Fe/Ni and Fe/Co tend to increase, as evidenced from a study on soils of different ages, developed on basahs in the northern part of Hainan Island. Ba/Nb, significantly correlative with soil age, can be used to evaluate soil evolution. By using the mass-balance method, the element migration was discussed with Ti as an immobile element. The results showed that element leaching was most intensive in the early pedogenic period. In this period (Primosols) , over 90% of Ca, Mg, K and Na was leached out of soils till Ferrosol formation. The leaching of P occurred mainly at the beginning of soil development. About 60% of Si was mobilized in the stage of Cambosol formation and 80% in the stage of Ferralosol formation.
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| 关 键 词： | 玄武岩 土质时间序列 地球化学 元素迁移 热带地区 |
Elemental geochemistry of a soil chronosequence on basalt on northern Hainan Island,China |
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| Huang?Chengmin,Gong?Zitong,He?Yurong.Elemental Geochemistry of a Soil Chronosequence on Basalt onNorthern Hainan Island, China[J].Chinese Journal of Geochemistry,2004,23(3):245-254. |
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| Authors: | Huang Chengmin Gong Zitong He Yurong |
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| Institution: | (1) Department of Environmental Science and Engineering, Sichuan University, 610065 Chengdu, China;(2) Institute of Soil Science, Chinese Academy of Sciences, 210008 Nanjing, China;(3) Chinese Academy of Sciences, Institute of Mountain Disasters & Environment, 610041 Chengdu, China |
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| Abstract: | With increasing soil age, the contents of Sr, Ba and ratios of Sr/Be in soils tend to decrease, whereas the contents of V, Sc, Ni, Cr, Co and ratios of Fe/Ni and Fe/Co tend to increase, as evidenced from a study on soils of different ages, developed on basalts in the northern part of Hainan Island. Ba/Nb, significantly correlative with soil age, can be used to evaluate soil evolution. By using the mass-balance method, the element migration was discussed with Ti as an immobile element. The results showed that element leaching was most intensive in the early pedogenic period. In this period (Primosols), over 90% of Ca, Mg, K and Na was leached out of soils till Ferrosol formation. The leaching of P occurred mainly at the beginning of soil development. About 60% of Si was mobilized in the stage of Cambosol formation and 80% in the stage of Ferralosol formation. |
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| Keywords: | basalt soil chronosequence elemental geochemistry element migration tropical region |
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