农业工程学报2012，Vol.28Issue(17)：71-77,7.DOI:10.3969/j.issn.1002-6819.2012.17.011
黄河乌兰布和沙漠段沿岸风沙流结构与沙丘移动规律
Structure of wind-sand flow and law of dune movement along bank of Yellow River in Ulan Buh desert
摘要
Abstract
To understand the sand dune movement activities and characteristics in Ulan Buh desert along the Yellow River, taking the mobile dunes along the bank as study material and based on lots of work in the field observation and lab analysis, a primary quantity research was made to study the wind speed qf sand raising, constituents of sand, structure of wind-sand flow and moving characteristics of dune movement. The results showed that the study area from the main sand wind WS-W, concentrated in March to May, and 5-6 m/s wind accounted for 50.26% of the wind-sand; Sand material particle size are mainly fine (0.1-0.25 mm); Along the Yellow River segment, the composition of sand dune particle below very fine size (≤0.1 mm) is 8.92% less than that of the desert hinterland. About 81.75% sand material of the study area pass through 0-10 cm air layer. There is a good power function relationship between the relative sediment discharge and elevation in different parts of the dunes; The dunes move forward a distance of 8.19 m/a, mainly occurred in March to May. The findings in the study can provide a scientific basis for calculating the amount of sediment in the Yellow River and improvement of comprehensive protection system along the Yellow River.关键词
风/沙/结构/黄河乌兰布和沙漠段/沙丘移动/风积沙Key words
yellow river section in the ulan buh desert/ structure of wind-sand flow/ laws of dune movement/ aeolian sand分类
天文与地球科学引用本文复制引用
何京丽,郭建英,邢恩德,崔崴,李锦荣..黄河乌兰布和沙漠段沿岸风沙流结构与沙丘移动规律[J].农业工程学报,2012,28(17):71-77,7.基金项目
内蒙古自治区2011年度科技计划项目-黄河沿岸乌兰布和沙漠段水土保持关键技术研究(20110533) （20110533）
