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西藏土壤-植物-动物(人)系统中硒含量与大骨节病的关系

李顺江1,2;李巍1;胡霞3;杨林生2;西绕若登4   

  1. 1北京师范大学环境学院, 北京 100875; 2中国科学院地理科学与资源研究所, 北京 100101; 3北京师范大学减灾与应急管理研究院, 北京 100875; 4西藏自治区疾病预防控制中心, 拉萨 850000
  • 收稿日期:2008-04-30 修回日期:1900-01-01 出版日期:2008-12-10 发布日期:2008-12-10

Distribution of Kashin-Beck disease (KBD) and its relation to selenium content in soil-plant-animal (human being) ecosystem in Tibet.

LI Shun-jiang1,2;LI Wei1;HU Xia3;YANG Lin-sheng2;XIRAO Ruo-deng4   

  1. 1Environmental School, Beijing Normal University, Beijing 100875, China; 2Institute of Geographical Sciences and Natural Resource Research, Chinese Academy of Sciences, Beijing 100101, China; 3Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing 100875, China; 4Tibet Municipality Center for Disease Control and Prevention, Lhasa 850000, China
  • Received:2008-04-30 Revised:1900-01-01 Online:2008-12-10 Published:2008-12-10

摘要: 通过对西藏大骨节病区与非病区中土壤、粮食和儿童发样匹配采样以及对样品中硒含量的分析,探讨了硒元素在土壤-植物-动物生态系统中的含量特征及其与大骨节病分布流行的关系。结果表明,西藏地区整体处于低硒水平,所有病区样品的硒含量显著低于非病区(P<0.05)。土壤低硒是导致西藏大骨节病区粮食、人体硒水平偏低及病情流行的一个主要原因。改善土壤硒环境,提高土壤硒含量是西藏地区大骨节病防治的主要措施之一;补硒能够显著提高人体发硒水平,并有效控制大骨节病,但是需要长期坚持。

关键词: 土壤有机质, 碳同位素, 碳循环, 亚热带, 鼎湖山

Abstract: The selenium contents in the soil, food, and children’s hair samples collected from Kashin-Beck disease (KBD) and non-KBD areas in Tibet were deter mined to approach the relationship between the distribution of KBD and the selenium content in soil-plant-animal (human being) ecosystem in Tibet. The results showed that in Tibet, there was an overall low level of selenium. The selenium content in the samples collected from KBD areas was significantly lower than that in non-KBD areas (P<0.05). The low soil selenium content in KBD areas was the critical reason leading to the low selenium level in grain and human bodies in these areas, and the KBD prevalence in Tibet. Therefore, to improve soil environment and to increase soil selenium content would be the critical way to prevent the KBD prevalence in Tibet. Moreover, selenium supplement could obviously improve the selenium content of children’s hair, and prevent and control KBD effectively. However, this supplement should be insisted on longtime.

Key words: Soil organic matter, 14C, Carbon cycling, Subtropical zone, Dinghushan Biosphere Reserve