西藏昌都地区环境硒分布特征及其与大骨节病的关系  

Selenium in environment and its relationship with Kashin-Beck disease in Chamdo Area of Tibet

作　　者：王婧[1,2] 李海蓉[1,2] 杨林生[1,2] 龚弘强 李永华[1] 赵生成 尼玛仓决 

机构地区：[1]中国科学院地理科学与资源研究所中国科学院陆地表层格局与模拟重点实验室,北京100101 [2]中国科学院大学资源与环境学院,北京100049 [3]西藏自治区地方病防治研究所,拉萨850030

出　　处：《地理研究》2017年第2期383-390,共8页Geographical Research

基　　金：国家“十二五”科技支撑计划项目(2013BAC04B03);国家自然科学基金项目(41171081)

摘　　要：为阐明西藏昌都地区大骨节病的持续活跃与当前环境硒状况的相互关系,在西藏昌都地区大骨节病流行区选取八宿县和洛隆县,按病情严重程度匹配采集了饮用水、自然土壤(0～20 cm)、表层耕作土壤(0～20 cm)、青稞、糌粑、外购大米和面粉等环境样品,分析了样品硒含量及其与大骨节病病情的关系。结果表明:八宿县和洛隆县外环境总体处于低硒水平,其中饮用水、耕作土壤、青稞和糌粑等样品硒含量随病情加重呈显著减少趋势,轻病区环境硒水平较2004年调查结果有明显提高。大骨节病病情分布与当地环境因素特别是主粮青稞和糌粑关系密切,表明病区居民对自产粮食的依赖是大骨节病持续活跃的重要原因,增加外源性高硒食物的摄入仍是预防和控制大骨节病病情的基本对策。To clarify the relationship between the continually active Kashin-Beck disease （KBD） and environmental selenium level in Chamdo Prefecture of Tibet, samples including drinking water, natural and cultivated soil （0-20 cm）, highland barley, tsamba, outsourced rice and flour were collected in Basu County and Luolong County based on their KBD prevalence rate. Total selenium content in each sample was determined and analyzed. The results showed that the environmental selenium level was generally low in Basu and Luolong counties, and the prevalence of KBD was more severe as the selenium contents in drinking water, cultivated soil, highland barley and tsamba decreased. Compared with the results investigated in 2004, the environmental selenium level in light KBD area has been improved considerably. The distribution of KBD is closely related with local environmental factors, especially with highland barley and tsamba, indicating that highly dependence on home-grown grain in KBD areas is the main reason why KBD keeps active. Enhancing the intake of exogenous selenium- rich food is still the basic strategy for controlling and preventing KBD.

关 键 词：昌都地区 大骨节病 环境 硒 

分 类 号：R684.1[医药卫生—骨科学]