| 黑龙江省拜泉地区典型黑土剖面元素地球化学特征及其环境指示意义 |
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| 引用本文： | 韩晓萌,戴慧敏,梁帅,刘凯.黑龙江省拜泉地区典型黑土剖面元素地球化学特征及其环境指示意义[J].地质与资源,2020,29(6):556-563. |
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| 作者姓名： | 韩晓萌 戴慧敏 梁帅 刘凯 |
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| 作者单位： | 1. 中国地质调查局 沈阳地质调查中心, 辽宁 沈阳 110034;2. 中国地质调查局 黑土地演化与生态效应重点实验室, 辽宁 沈阳 110034 |
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| 基金项目： | 中国地质调查局“兴凯湖平原及松辽平原西部土地质量地球化学调查”项目（编号DD20190520）. |
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| 摘 要： | 地表中元素的地球化学行为与自然环境密切相关，土壤中元素分布的变化记录了其形成时的环境特征.以拜泉地区典型黑土剖面为对象，对其常量、微量元素的分布规律及其蕴含的环境信息进行研究，探讨了研究区土壤剖面风化程度及剖面形成过程中气候演化特征.结果表明，拜泉土壤剖面常量元素含量除SiO2和Na2O外，总体上高于东北平原平均值；化学蚀变指数（CIA）平均值为58，硅铝铁率（Saf）值较高，属于弱风化强度.植物生长所必需的微量元素N、P、S、Mn、B、I、Ge、Se和Mo等在温暖气候条件下，在表层和淀积层积累，含量较高，在淋溶层和母质层含量较低；寒冷干燥条件下，在表层积累.金属微量元素与Fe元素具有较强的相关性，说明其垂向组分不仅受气候条件控制，同时受常量元素控制.常量元素迁移规律表明，剖面腐殖层土壤成熟度高，成土过程中以温暖湿润气候为主；淀积层可能处于脱Na、Ca阶段，成土过程中气候相对寒冷干燥.
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| 关 键 词： | 黑土剖面 常量元素 微量元素 风化作用 气候环境 黑龙江省 |
| 收稿时间： | 2020-09-03 |
ELEMENT GEOCHEMISTRY OF THE TYPICAL BLACK SOIL SECTIONS IN BAIQUAN AREA,HEILONGJIANG PROVINCE: Environmental Implication |
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| HAN Xiao-meng,DAI Hui-min,LIANG Shuai,LIU Kai.ELEMENT GEOCHEMISTRY OF THE TYPICAL BLACK SOIL SECTIONS IN BAIQUAN AREA,HEILONGJIANG PROVINCE: Environmental Implication[J].Geology and Resources,2020,29(6):556-563. |
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| Authors: | HAN Xiao-meng DAI Hui-min LIANG Shuai LIU Kai |
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| Institution: | 1. Shenyang Center of China Geological Survey, Shenyang 110034, China;2. Key Laboratory of Black Land Evolution and Ecological Effects, CGS, Shenyang 110034, China |
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| Abstract: | The geochemical behavior of elements in earth surface is closely related to natural environment, and the change of element distribution in soil records the environmental characteristics during its formation. Focusing on the typical black soil sections in Baiquan area, the paper studies the distribution rule of major and trace elements and its implied environmental information, and discusses the weathering degree of the soil sections and climatic evolution characteristics during the formation of section. The results show that except SiO2 and Na2O, the content of major elements in the soil sections is generally higher than that in Northeast Plain. The average chemical index of alteration (CIA) is 58, with high Saf value, belonging to weak weathering. The trace elements essential for plant growth, such as N, P, S, Mn, B, I, Ge, Se and Mo, accumulate under warm climatic condition, with high content in surface and illuvial layers, and low in eluvial layer and parent material layer; while under cold and dry conditions, they accumulate on the surface. The strong correlation between metal trace elements and Fe indicates that its vertical component is controlled not only by climatic conditions, but also by major elements. The migration rule of major elements reveals the soil in humus layer is of high maturity, mainly formed in a warm and humid climate. The illuvial layer may be at the removal stage of Na and Ca, with soil formed in a relatively cold and dry climate. |
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| Keywords: | black soil section major element trace element weathering climate environment Heilongjiang Province |
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