GUO Jianying,DONG Zhi,LI Jinrong,et al.Dune Morphology and Migration Characteristics in the Ulanbuh Desert[J].Research of Soil and Water Conservation,2016,23(06):40-44.
黄河乌兰布和沙漠段沿岸沙丘形态及其运移特征
- Title:
- Dune Morphology and Migration Characteristics in the Ulanbuh Desert
- Keywords:
- dune morphology; migration characteristics; movement distance; sediment discharge; UlanBuh Desert
- 分类号:
- P931.3
- 摘要:
- 为更合理、精确地计算黄河乌兰布和沙漠段的入黄沙量，探明其对黄河沿岸植被造成的影响程度，以黄河乌兰布和沙漠段沿岸沙丘为研究对象，通过野外地貌调查、沙丘形态测量和遥感解译对其沙丘的形态特征及其运移特征进行了系统研究。结果表明：乌兰布和沙漠沿黄段沙丘以走向西南—东北的新月型沙丘和新月型沙丘链为主，沙丘剖面形态不对称，具有明显落沙坡；在发育过程中同时受到了西南风和西北风的显著影响，5年内以沙丘整体向河道推进为主，共移动19.45 m，具有单向快速运移的特点，且沙丘不断向黄河侵袭，应采取措施予以遏制。
- Abstract:
- In order to calculate the sediment load entering the Yellow River in the Ulanbuh Desert coastal more reasonably and accurately, and ascertain its impact on vegetation along the Yellow River, we made the sand dunes in the Ulanbuh Desert as the research objects. Through the methods of field topography survey, sand dune morphology measurement and remote sensing interpretation, we studied the morphological characteristics and transport characteristics of the dunes. The results show that the dunes mainly in barchans and barchans chain, which is in the direction of the southwest to northeast, the profile morphology of dune is asymmetric, and the leeward slope is obvious. In the process of development, the sand dune is influenced significantly by the southwest wind and the northwest wind. During the 5 years, the dunes moved the 19.45 m towards the river, and the movement of sand dunes has the characteristics of unidirectional rapid migration. The measures should be taken to curb the constant movement of sand dunes to the Yellow River.
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备注/Memo
收稿日期:2015-12-22;改回日期:2016-01-18。
基金项目:水利部公益性行业科研专项经费（201401084）；国家自然科学基金（41301303，51409114）
作者简介:郭建英(1979-),男,内蒙古呼和浩特人,博士,高级工程师,主要从事干旱、半干旱地区水土流失与植物生态方面的研究。E-mail:guojianying1980@163.com
通讯作者:李锦荣(1980-),男,内蒙古呼和浩特人,博士,工程师,主要从事风沙物理及其草地遥感方面的研究。E-mail:lijinrong918@126.com