干旱区研究

干旱区研究 ›› 2011, Vol. 28 ›› Issue (6): 928-935.

• 气候及其灾害 • 上一篇    下一篇

锡林郭勒地区沙尘暴气候致灾因子危险性评价

 武健伟1, 李锦荣2, 孙涛1, 李锋1, 周湘山3   

    1. 国家林业局 调查规划设计院，北京 100714
    2. 水利部 牧区水利科学研究所，内蒙古 呼和浩特 010020
    3. 北京林业大学 水土保持学院，北京 100083
  • 收稿日期:2011-03-18 修回日期:2011-10-08 出版日期:2011-11-15 发布日期:2012-01-16
  • 作者简介:武健伟（1971-），男，博士，高级工程师，自然地理专业，主要从事荒漠化监测、沙尘暴监测与灾情评估. E-mail:wujianwei2000@vip.sina.com
  • 基金资助:

    林业公益性行业科研专项（200804020）

Risk Assessment on Climatic Factors Resulting in Sandstorm Disasters in the Xilingol Region

 WU  Jian-Wei1, LI  Jin-Rong2, SUN  Tao1, LI  Feng1, ZHOU  Xiang-Shan3   

    1. Institute of Forest Survey and Planning, State Forestry Administration, Beijing 100714, China
    2. Institute of Water Resources for Pastoral Area, Huhhot 010020, China
    3. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
  • Received:2011-03-18 Revised:2011-10-08 Online:2011-11-15 Published:2012-01-16

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被引次数

4

摘要： 根据锡林郭勒地区1971-2000年气象数据资料，在沙尘暴时空分布研究的基础上，分析该地区沙尘暴气候因子致灾危险性风险区划。结果表明：锡林郭勒地区春季为沙尘暴高发期，占全年的77.28%。沙尘暴年际变化呈递减趋势，空间上由西向东逐渐递减，多发区位于荒漠草原区和农牧交错区。沙尘暴的形成发展与气候影响因子有关，但在不同阶段各站点受气候因子影响各不相同。气候因子致灾危险性总体上呈西南和东北较高、中间区域较低的趋势，危险性最高级位于苏尼特右旗、朱日和、二连浩特和乌拉盖，最低值位于那仁宝力格、太仆寺旗和多伦。除乌拉盖外，气候因子危险性分布与沙尘暴发生频率分布基本一致。

关键词: 沙尘暴, 时空分布, 气候因子, 危险性评价, 荒漠草原, 农牧交错区, 锡林郭勒, 内蒙古

Abstract: The Xilingol region is one of the main typical steppes in China, it is located in an ecological fragile zone, and it is also an important ecological barrier around Beijing. In this paper, the correlations between sandstorm occurrence and climatic factors were analyzed, and the rating matrix of meteorological factors was used to calculate the composite scores so as to research the risk of meteorological factors resulting in sandstorm disasters. The result revealed that the frequency percentage of sandstorm occurred in spring was 77.28%, and the seasonal characteristics of occurring frequency of sandstorm were obvious. Moreover, the occurring frequency of sandstorm was in a decreasing trend in recent 30 years. Spatially, the occurring frequency of sandstorm was gradually decreased from the west to the east, and the areas with high occurring frequency were the desert steppes and the farmingpastoral ecotones. Formation and development of sandstorm are closely related to climatic factors, but the effects of climatic factors on sandstorm occurrence are temporally different. Holistically, the risk of climatic factors resulting in sandstorm disasters in the southwestern and northeastern parts of the study area was higher than that in the central part, and the risk distribution of climatic factors accorded basically with the occurring frequency of sandstorm.

Key words: sandstorm, spatiotemporal distribution, climatic factor, risk assessment, desert steppe, farming pastoral ecotone, Xilingol region, Inner Mongolia

中图分类号: 

  • P425.5+5