乌兰布和沙漠东北缘近地层风速和降尘量特征

选择乌兰布和沙漠东北缘荒漠-绿洲过渡带和绿洲为定位监测点,基于磴口生态站近地层(0~50 m)风沙监测塔2013年全年的风速和降尘数据,分析了沙漠东北缘近地层风沙时空变化规律。研究结果如下:1)过渡带和绿洲内近地层的风速均随着高度增加而增大,风速廓线特征可用幂函数表示;过渡带风速显著高于绿洲内风速。2)过渡带和绿洲内近地层沙尘水平通量和降尘量均随着高度增加而减少,其分布特征遵循幂函数关系;过渡带沙尘水平通量显著高于绿洲内,说明绿洲防护体系对沙尘具有明显的削弱作用;过渡带沙尘水平通量与降尘量之间为线性关系,而绿洲内二者之间为指数函数关系。3)在春、夏、秋、冬季,过渡带和绿洲内近地层沙尘水平通量和...

Full description

Saved in:
Bibliographic Details
Published in农业工程学报 Vol. 32; no. 24; pp. 147 - 154
Main Author 罗凤敏 辛智鸣 高君亮 郝玉光 葛根巴图 李新乐
Format Journal Article
LanguageChinese
Published 国家林业局内蒙古磴口荒漠生态系统定位观测研究站/中国林业科学研究院沙漠林业实验中心,磴口,015200 2016
Subjects
Online AccessGet full text
ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.24.019

Cover

More Information
Summary:选择乌兰布和沙漠东北缘荒漠-绿洲过渡带和绿洲为定位监测点,基于磴口生态站近地层(0~50 m)风沙监测塔2013年全年的风速和降尘数据,分析了沙漠东北缘近地层风沙时空变化规律。研究结果如下:1)过渡带和绿洲内近地层的风速均随着高度增加而增大,风速廓线特征可用幂函数表示;过渡带风速显著高于绿洲内风速。2)过渡带和绿洲内近地层沙尘水平通量和降尘量均随着高度增加而减少,其分布特征遵循幂函数关系;过渡带沙尘水平通量显著高于绿洲内,说明绿洲防护体系对沙尘具有明显的削弱作用;过渡带沙尘水平通量与降尘量之间为线性关系,而绿洲内二者之间为指数函数关系。3)在春、夏、秋、冬季,过渡带和绿洲内近地层沙尘水平通量和降尘量均随着高度增加而减小;春季是沙尘水平通量和降尘量集中的季节,其次为夏季,秋季和冬季相对较低;一年四季中,过渡带沙尘水平通量和降尘量均高于绿洲内。
Bibliography:Luo Fengmin, Xin Zhiming, Gao Junliang, Hao Yuguang, Ge Genbatu, Li Xinle (Inner Mongolia Dengkou Desert Ecosystem Research Station, State Forestry Administration/Experimental Center of Desert Forestry, Chinese Academy of Forestry, Dengkou 015200, China)
11-2047/S
Deserts are the main source of dust storms in the surface layer,aeolian sand-dust transport is a serious problem in many arid and semi-arid regions in the world,and it is considered to be a significant part of global biogeochemical cycle.Aeolian dust transport processes are closely related to the variation of the height of near-surface horizontal and deposition dust flux.Ulan Buh Desert is one of the 8 largest deserts in China,and is also one of the important dust source regions in northern China.In this paper,fixed monitoring stations were set up in both the desert-oasis ecotone and the oasis at the northeast edge of Ulan Buh Desert,the near-surface(0-50 m) wind speed and sand-dust flux data obtained from the dust observation tower at the Inner Mongo
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.24.019