冀北接坝山区风场特征与风蚀沙埋分布的关系  

Relation of Wind Field Characteristics with Wind Erosion and Erosive Sand Burial in Jieba Mountain Area of Hebei Province

作　　者：金一鸣[1] 杨建英[1] 王志明[2] 史常青[1] 齐特[1] 

机构地区：[1]北京林业大学水土保持学院,北京100035 [2]交通运输部天津水运工程科学研究所,天津300456

出　　处：《水土保持通报》2016年第2期32-37,共6页Bulletin of Soil and Water Conservation

基　　金：国家林业局林业公益性行业科研专项"建设工程损毁林地植被恢复技术研究与示范"(200904030)

摘　　要：[目的]研究冀北接坝山区风场特征与风蚀沙埋分布关系,旨在为该区域水土流失防治提供依据。[方法]在河北省丰宁县小坝子乡架设多台自动气象站进行气象要素观测,同时使用插钎法对该区地表风蚀沙埋情况进行监测,并采用Windninjia,ArcGIS等软件对监测数据进行处理和制图,分析接坝山区风场特征及其与风蚀的关系。[结果]接坝山区风向受气候和地形的影响,风向日变化和季节变化显著,以西北和东南风向为主;由于受地形、下垫面特性等因素影响,风速季节变化显著;风蚀量由西北向东南逐步递减,即研究区内沙丘整体缓慢向东南移动。[结论]风蚀强度与地形和风场有直接关系,侵蚀强度分布符合风场矢量分布特征。[Objective]This paper aimed to confirm whether wind characteristics had relations with wind erosion,and its accumulation in the perspective of soil and water conservation in Xiaobazi Town,Fengning County of Northern Hebei Province.[Methods]Several automatic weather stations were set up for meteorological observation,the surface wind erosion and accumulation amount was monitored by the needle pin method.The data was analyzed by software such as Microsoft Office,Windninjia and ArcGIS.[Results]The wind characteristics were both affected by local climate and terrain,with obvious daily variation and seasonal change,and prevailed by northwest and southeast winds.Due to the influences of the temperature and air pressure,seasonal change of wind speed was significant.Wind erosion amount from northwest to southeast gradually diminished,dunes moved slowly to the southeast in research area.[Conclusion]Erosion had direct relation with wind field intensity,the erosion intensity distribution was consistent with the vector distribution of wind field.

关 键 词：冀北 接坝山区 风场特征 风蚀沙埋 

分 类 号：P425[天文地球—大气科学及气象学]