艾比湖干涸湖底尘暴及其灾害分析  

ANALYSIS ON THE DUST STORMS AND THEIR DISASTERS IN THE LAKEBED REGION OF EBINUR LAKE, XINJIANG

作　　者：吉力力.阿不都万里 穆桂金[1] 

机构地区：[1]中国科学院新疆生态与地理研究所,乌鲁木齐830011

出　　处：《干旱区地理》2002年第2期149-154,共6页Arid Land Geography

基　　金：国家自然科学基金资助项目 (编号 :49772 14 1)

摘　　要：在艾比湖地区水动力 ,风力和重力作用形成的洪积、冲积、湖积、风积、化学沉积等第四纪的沉积类型分布十分广泛 ,不同沉积类型的物质组成、空间分布、结构特征及其对尘暴物质的贡献率和沙尘暴产生的灾害程度有较大的不同。本文根据实地考察 ,取样分析的结果以及前人的资料 ,对艾比湖地区地貌结构特征与沙尘暴形成的关系以及沙尘暴和浮尘天气对大农业、工业、人民健康造成的的灾害强度、灾害方式进行分析研究。Located in the southwestern part of the Junggar Basin, Xinjiang, the Ebinur Lake region is surrounded by mountains on its three sides and connects with a plain to the east. The ecology and the natural environment here have violently changed since the Quaternary period, especially since the Last Ice Age, in which the most spectacular change is the drawdown of water level and the corresponding reduction of the water area. At present the water area of the lake is only about 500 km 2 left, the lake has evolved to the salt lake stage, and the mineralization of lake water is as high as 97～117 g/l. Under the effects of hydrologic force, wind force and gravity, the Quaternary sediment including diluvial, alluvial, lacustrine and chemical deposits is extensively distributed in the lake region. The composition, spatial distribution and structure of the different deposits have the great different contribution rates to the occurrence of dust storms and their disasters. This paper analyzes the relations between the geomorphologic patterns, the formation of dust storms and their disaster intensity and ways as well as of floating dusts to agriculture, industry and people's health based on the field investigation, sampling analyzed results and predecessors' data.

关 键 词：地貌结构 沙尘暴 灾害 艾比湖 空间分布 沉积类型 

分 类 号：P445.4[天文地球—大气科学及气象学]