| 陕西南部大巴山区碘的分布规律与克汀病 |
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| 作者姓名： | 雒昆利 潘云唐 王五一 谭见安 李海蓉 李日邦 王丽珍 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所 北京 100101;
2. 中国科学院研究生院 北京 100039;
3. 西安科技学院地质系 西安 710054 |
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| 基金项目： | 中国科学院地理科学与资源研究所创新基地创新项目CX ;煤炭工业部跨世纪学科带头人基金!(2300213) ;陕西省自然科学基金!IS03 |
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| 摘 要： | 通过对陕西南部大巴山地区的基岩、土壤、作物、泉水及地表水中含碘量和分布规律的研究,发现本区环境中碘的分布很不均衡,变化较大,包括从极低碘到高碘的多种情况.本区主要分布的早古生代地层均富碘,岩石的含碘量为 0.7～ 1.9mg/kg.在山坡坡度较缓的基性火成岩分布区的基岩、土壤、作物均富碘,一般为 1.4～ 0.9mg/kg.土壤的含碘量为 0.2～ 2.2mg/kg ;土豆的含碘量为 8～ 1 80 μg/kg.由于长期的风化剥蚀,大巴山区大多数地区的土壤和作物缺碘,特别是碳酸盐岩分布区以及高大山头上部的土壤和作物均缺碘.土壤和作物中含碘量与其分布区的基岩的岩性和含碘量以及地理环境密切相关,同时本区克汀病的分布和发病率与环境中碘的含量和分布也密切相关.
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| 关 键 词： | 碘 分布规律 克汀病 陕西南部 大巴山区 |
| 收稿时间： | 2000-10-26 |
Distributing Pattern of Iodine and Endemic Cretinism in Daba Mountains (South Qinling Mountains),South Shaanxi Province |
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| Authors: | Luo Kunli Pan Yuntang Wang Wuyi Tan Jianan Li Hairong Li Ribang Wang Lizhen |
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| Institution: | 1. Institute of Geographical Sciences and Natural Resources, Chinese Academy of Sciences, Beijing 100101;
2. Graduate School, Chinese Academy of Sciences |
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| Abstract: | The iodine content and distributing pattern in the bedrock, soil, crop, spring and main rivers of Daba Mountains (South Qinling Mountains)region were studied.The result show s that iodine content in this region is not balanced and most area is short of iodine, specifically in the distributing area of limestone and sandstone as well as the upper part of big hill.The iodine content in the bedrock,w hich are mainly early Paleozoic st rata, is high, it is about 0.7～ 1.9 mg/ kg, among them, the igneous rock, specifically the diabase is more rich in iodine,it is about 1.4 ～ 1.9 mg/ kg.The iodine content of soil is 0.2 ～ 2.2mg/ kg ;the iodine content of potato is 8 ～ 180μg/ kg.The iodine content of the soil and crop that is dist ributing in the area of igneous rock is rich in iodine if the hill is not more steep and cranny is not developed.The iodine content of the soil and crop that is in the dist ributing area of sandstone and limestone is the lowest in this region.So, the iodine content in the soil, crop and spring is closely related with the iodine content and lithologic character of the bedrock and geog raphical condition in these region and simultaneously closely related with the distributing pattern of the cretinism in the region |
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| Keywords: | iodine distributing pattern endemic cretinism South Shaanxi Province Daba Mountains |
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