地理科学进展 ›› 2020, Vol. 39 ›› Issue (10): 1677-1686.doi: 10.18306/dlkxjz.2020.10.007

• 研究论文 • 上一篇    下一篇

青藏高原大骨节病流行区环境、食物及人群硒水平研究

王婧1,2(), 李海蓉2,3,*(), 杨林生2,3   

  1. 1.华中师范大学地理过程分析与模拟湖北省重点实验室/可持续发展研究中心,武汉430079
    2.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
    3.中国科学院大学资源与环境学院,北京100049
  • 收稿日期:2019-12-02 修回日期:2020-01-16 出版日期:2020-10-28 发布日期:2020-10-27
  • 通讯作者: 李海蓉
  • 作者简介:王婧(1989— ),女,宁夏人,博士,研究方向为环境地理与人类健康。E-mail: wangj. 15b@igsnrr.ac.cn
  • 基金资助:
    国家自然科学基金项目(41907390);国家自然科学基金项目(41671500);第二次青藏高原综合科学考察研究项目(2019QZKK0607);中央高校基本科研业务费专项资金(CCNU18XJ029)

Selenium levels in the environment, food, and human hair in Kashin-Beck Disease endemic areas of the Qinghai-Tibet Plateau

WANG Jing1,2(), LI Hairong2,3,*(), YANG Linsheng2,3   

  1. 1. Key Laboratory for Geographical Process Analysis & Simulation, Research Institute of Sustainable Development, Central China Normal University, Wuhan 430079, China
    2. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China
    3. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2019-12-02 Revised:2020-01-16 Online:2020-10-28 Published:2020-10-27
  • Contact: LI Hairong
  • Supported by:
    National Natural Science Foundation of China(41907390);National Natural Science Foundation of China(41671500);The Second Tibetan Plateau Scientific Expedition and Research(2019QZKK0607);Fundamental Research Funds for the Central Universities(CCNU18XJ029)

摘要:

为了解青藏高原大骨节病流行区环境、食物及人群硒水平的分布现状,论文通过CNKI、Web of Science和Google Scholar等数据库检索收集了2000—2018年间发表的关于青藏高原大骨节病病区土壤、粮食、饮水及人发硒含量的文献,按拟定标准共筛选出33篇文献并提取有效数据进行统计分析。结果显示,青藏高原大骨节病病区自然环境总体仍处于低硒循环状态,其中耕作土壤、饮水平均硒含量分别为0.147 mg·kg-1和0.54 μg·L-1,高原自产青稞、小麦、糌粑平均含硒量分别为9.27、19.08、11.07 μg·kg-1;而病区儿童整体硒营养水平较1990年以前有明显升高趋势,发硒平均含量为0.234 mg·kg-1,已基本脱离硒缺乏状态(<0.20 mg·kg-1);外源性大米的硒含量为43.29 μg·kg-1;病区儿童发硒水平与土壤总硒含量无明显相关关系(r=0.125,P>0.05,N=23)。青藏高原大骨节病流行区儿童发硒水平与自然环境硒水平不一致的变化趋势提示,随着社会人文因素的干预,外源性硒的输入有所增加,并在一定程度上降低了病区人群对当地低硒环境的依赖性,这可能是青藏高原大骨节病病情稳定下降并得到有效控制的主要原因。

关键词: 青藏高原, 大骨节病, 环境, 儿童,

Abstract:

To investigate the current status of the distribution of selenium (Se) in the environment, food, and human body in the Kashin-Beck Disease (KBD) endemic areas of the Qinghai-Tibet Plateau, literature on Se contents in soil, food, drinking water, and human hair in the Qinghai-Tibet Plateau KBD endemic areas published during 2000-2018 were searched and collected from databases including the China National Knowledge Infrastructure (CNKI), Web of Science (WoS), and Google Scholar. Based on a series of selection criteria, 33 of the retrieved articles were identified and valid data were extracted for statistical analysis. The results show that the natural environment in the Qinghai-Tibet Plateau KBD endemic areas was still in low-Se cycle status. Average Se contents in cultivated soil and drinking water were 0.147 mg·kg-1 and 0.54 μg·L-1; average Se contents in local-produced highland barley, wheat, and tsamba and imported rice were 9.27, 19.08, 11.07, and 43.29 μg·kg-1, respectively. Compared with the years before 1990, a clear increasing trend was observed in Se nutrition level of children in the KBD endemic areas. The average Se content in children's hair was 0.234 mg·kg-1, which is basically above the low-Se range (< 0.20 mg·kg-1). No significant correlation was observed between total soil Se and Se in children's hair (r=0.125, P>0.05, N=23). The inconsistent changing trend of Se levels between children's hair and the natural environment in the Qinghai-Tibet Plateau KBD areas suggests that social and human interventions increased the input of exogenous Se, which weakened the dependence of local residents on the low-Se environment to some extent. This might be the main reason that the prevalence of KBD in the Qinghai-Tibet Plateau declined steadily and was brought under effective control.

Key words: Qinghai-Tibet Plateau, Kashin-Beck Disease (KBD), environment, children, selenium