黑河中游沙漠-绿洲过渡带起沙风风况及输沙势特征——以临泽县为例  

Wind Conditions and Characteristics of Sand Transport Potential in the Desert-oasis Transition Zone in the Middle Reaches of the Heihe River:Taking Linze County as an Example

作　　者：张钰佳 张媛 ZHANG Yujia;ZHANG Yuan(School of Civil Engineering,Lanzhou Institute of Technology,Lanzhou 730050,China;School of Art and Design,Lanzhou Institute of Technology,Lanzhou 730050,China)

机构地区：[1]兰州工业学院土木工程学院,甘肃兰州730050 [2]兰州工业学院艺术设计学院,甘肃兰州730050

出　　处：《兰州工业学院学报》2024年第5期48-54,共7页Journal of Lanzhou Institute of Technology

基　　金：甘肃省高等学校创新项目(2024A-191);甘肃省科技厅省自然科学基金(23JRRA921);兰州工业学院2023年大学生创新创业训练计划项目(DC202302-45,DC202301-06)。

摘　　要：基于甘肃临泽农田生态系统国家野外科学观测研究站气象观测数据,在分析黑河中游沙漠-绿洲过渡带的起沙风风况和输沙势特征变化情况的基础上,评估了区域风能状况。结果表明:研究区年均起沙风风速为6.12 m/s,年均起沙风频率为5.57%,最大风速为23.3 m/s;研究区年起沙风向主要以偏东风(NNE、NE、ENE、E)和偏西风(WNW、NW、W)为主;研究区年输沙势(DP)和年合成输沙势(RDP)分别为18.88 VU和6.10 VU,属于低风能环境;年方向变率指数(RDP/DP)为0.32,属于中比率的钝双峰或锐双峰型风况;年合成输沙势方向(RDD)267.05°,为W方向,表明黑河中游沙漠-绿洲过渡带沙物质主要朝西方向输移;风能环境在春季最大,在这期间可通过适当的防护措施截留沙物质,进而减少风沙灾害的发生。Based on the meteorological observation data of the National Field Scientific Observation and Research Station of Linze Farmland Ecosystem in Gansu Province,this paper analyzes the changes of the wind conditions and the characteristics of the sand transport potential in the desert-oasis transition zone in the middle reaches of the Heihe River,and the regional wind energy situation is evaluated.The results show that the annual average wind speed of sand driving wind in the study area is 6.12 m/s,its annual average frequency is 5.57%,and the maximum wind speed is 23.3 m/s.The annual sand wind direction in the study area is mainly east wind(NNE,NE,ENE,E)and west wind(WNW,NW,W).The annual drift potential(DP)and annual resultant drift potential(RDP)in the study area are 18.88 VU and 6.10 VU,respectively,belonging to a low wind energy environment;the annual directional variability index(RDP/DP)is 0.32,which is a medium ratio blunt bimodal or sharp bimodal wind conditions;the annual resultant drift direct(RDD)is 267.05°,which is the W direction,indicating that the sand material in the desert-oasis transition zone in the middle reaches of the Heihe River mainly transports towards the west.The wind energy environment is the largest in spring,during which time appropriate protective measures can be used to trap sand materials,thereby reducing the occurrence of wind and sand disasters.

关 键 词：沙漠-绿洲过渡带 起沙风 输沙势 风能环境 黑河中游 

分 类 号：P931.3[天文地球—自然地理学]