乌兰布和沙漠东北缘绿洲防护林体系防风阻沙能力研究  

Study on wind prevention and sand resistance ability of oasis shelterbelt system in the northeast of Ulan Buh Desert

作　　者：边凯[1,2] 高君亮 辛智鸣[2] 罗凤敏[2] 郝玉光[2] 李新乐[2] 谭立海[1] 安志山[1] BIAN Kai;GAO Junliang;XIN Zhiming;LUO Fengmin;HAO Yuguang;LI Xinle;TAN Lihai;AN Zhishan(Key Laboratory of Desert and Desertification,Chinese Academy of Sciences,Lanzhou Gansu 730000;Inner Mongolia Dengkou Desert Ecosystem National Observation Research Station/National Long-Term Scientific Research Base of Comprehensive Control in Ulan Bub Desert/Experimental Center of Desert Forestry,Chinese Academy of Forestry,Dengkou Inner Mongolia 015200)

机构地区：[1]中国科学院沙漠与沙漠化重点实验室,甘肃兰州730000 [2]内蒙古磴口荒漠生态系统国家定位观测研究站/乌兰布和沙漠综合治理国家长期科研基地/中国林业科学研究院沙漠林业实验中心,内蒙古磴口015200

出　　处：《首都师范大学学报（自然科学版）》2021年第1期48-53,共6页Journal of Capital Normal University：Natural Science Edition

基　　金：中国科学院沙漠与沙漠化重点实验室开放基金课题(KLDD⁃2018⁃004)。

摘　　要：沙漠地区不同下垫面特征直接影响沙尘的输送过程.在乌兰布和沙漠东北缘沙漠-绿洲过渡带和绿洲内部分别建设风沙监测塔,并获取2018年春季(3—5月)的风速和沙尘数据,对沙尘传输的差异性进行对比分析.结果显示:在沙漠-绿洲过渡带和绿洲内沙尘水平通量随高度变化均呈幂函数分布;沙尘水平通量在沙漠-绿洲过渡带随高度增加显著降低,而在绿洲内呈现平缓增加趋势;沙尘水平通量从沙漠-绿洲过渡带至绿洲内部减少约一半;绿洲内部起沙风频率比沙漠-绿洲过渡带降低了一半左右,绿洲防护林明显削弱了过境风速、减少了起沙风的持续时间,防风阻沙效果明显.The characteristics of different underlying surfaces directly affect the transportation of sand and dust in desert areas.In this study,the differences of sediment transport between desert⁃oasis transitional zone and oasis in the northeast of Ulan Buh Desert were studied based on wind speed and sand⁃dust data during spring of 2018(March to May)from the Inner Mongolia Dengkou Desert Ecosystem National Observation Research Station.The results indicated that,the change of horizontal sand⁃dust flux with the height obeyed the power function well over oasis⁃desert transitional zone and oasis.The amount of horizontal sand⁃dust flux decayed rapidly with increas⁃ing height in desert⁃oasis transition zone,but increased gradually in oasis.The amount of horizontal sand⁃dust flux in oasis was less than desert⁃oasis transitional zone by about half.The frequency of sand⁃driving wind in oasis was about half time lower than desert⁃oasis transition zone.The shelterbelt of oasis has an obvious effect of wind preven⁃tion and sand resistance by reducing wind speed and the duration of sand⁃driving wind.

关 键 词：乌兰布和沙漠 沙尘水平通量 起沙风 输沙势 

分 类 号：P941.73[天文地球—自然地理学] S727.2[农业科学—林木遗传育种]