| 浙江富硒土壤资源调查与评价 |
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| 引用本文： | 郦逸根, 董岩翔, 郑洁, 李琰, 吴小勇, 朱朝晖. 浙江富硒土壤资源调查与评价[J]. 第四纪研究, 2005, 25(3): 323-330. |
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| 作者姓名： | 郦逸根 董岩翔 郑洁 李琰 吴小勇 朱朝晖 |
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| 作者单位： | 1. 上海申丰地质新技术应用研究所有限公司, 上海 201107;; 2. 浙江省地质调查院, 杭州 311203 |
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| 基金项目： | 中国地质调查局地质调查项目 |
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| 摘 要： | 浙江省农业地质环境调查发现,浙北、浙东、浙中地区富硒土壤呈大面积分布。不同类型土壤中,以石灰岩土硒含量最高,黄壤和红壤硒含量次之;不同类型成土母质中,以残坡积物硒含量相对较高;不同类型岩石中,以石英砂岩、硅质岩和中深变质岩硒含量较高,高于中国东部地壳丰度值。富硒土壤主要分布于富硒岩石和煤系地层区。硒多富集在土壤表层,由地表向深部含量迅速下降。根据土壤背景值和硒生态景观分级标准,建立了富硒土壤评价标准,划分硒含量等级区,圈定了浙江省富硒土壤分布。
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| 关 键 词： | 硒 土壤资源 评价 |
| 文章编号： | 1001-7410(2005)03-323-08 |
| 收稿时间： | 2005-01-21 |
| 修稿时间： | 2005-01-21 |
SELENIUM: ABUNDANT SOIL SURVEY AND ASSESSMENT IN ZHEJIANG |
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| Li Yigen, Dong Yanxiang, Zheng Jie, Li Yan, Wu Xiaoyong, Zhu Chaohui. SELENIUM: ABUNDANT SOIL SURVEY AND ASSESSMENT IN ZHEJIANG[J]. Quaternary Sciences, 2005, 25(3): 323-330. |
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| Authors: | Li Yigen Dong Yanxiang Zheng Jie Li Yan WU Xiaoyong ZHU Chaohui |
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| Affiliation: | 1. Shanghai Shenfeng Institute of Novel Geological Techniques, Shanghai 201107;; 2. Zhejiang Institute of Geological Survey, Hangzhou 311203 |
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| Abstract: | A recent survey found that there are large areas of soils with abundant selenium in Zhejiang. Among different types of soils, Se concentration in calcareous rock soil is the highest. Calcareous rock soil, yellow soil and red soil belong to selenium-enriched soils. In different parent materials, selenium concentration in all kinds of eluvial-slope wasp is higher than that of others, and it is up to 0.43mg/kg. Selenium concentration in same rocks, such as quartz sand rock, silicon rock, middle and deep metamorphic rocks is higher than that of the Earth's crust of rocks in Eastern China. The soil with abundant selenium is from the rocks with abundant selenium and coal formation. The variety of selenium content in soil profiles shows that selenium tends to be enriched in top soil, and it decreases rapidly from top soils to deep layer especially in parent material. It is obvious that Se in rock is the Se source of soil. This means selenium is enriched during soil formation and probably a part of selenium is from air deposition. The average enrichment coefficient of selenium in soils of Northern Zhejiang is up to 1.94, but that in the coastal hilly plain of Eastern Zhejiang is 1.14, which is similar to that in the hilly basin of Middle Zhejiang with enrichment coefficient of 1.34. The soil with abundant selenium can be recognized considering its enrichment coefficient and ecological landscape soil selenium criteria. The soils with abundant selenium can be divided into three sections dependent on selenium enrichment coefficient, selenium-abundant area, and selenium bio-availability in soil. |
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| Keywords: | selenium soil assessment |
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