水土保持通报2011，Vol.31Issue(3)：126-130,5.
半干旱农田地区DPM模型适用性初步研究
Applicability of DPM Model to Farmaland in Semi-arid Area
摘要
Abstract
DPM model,built on the principles that the dust emission flux is proportional to the dust saltation flux and the kinetic energy flux of saltating particles,is composed of two components： the saltation flux of soil microaggregates and dust particle emission.To validate the applicability of DPM to semi-arid areas,we selected four typical types of farmlands（soils） in the semi-arid north-central Shaanxi Province,measured and calculated the surface aerodynamic roughness,microaggregate distribution of surface soils,friction velocity,and threshold friction velocity on each study area,and comparatively analyzed the DPM model simulation accuracy between the different soil types and between different seasons.The results showed that DPM model can be used to simulate dust emission flux of the different soil types in the semi-arid farmlands,and can better simulate dust emission flux for the summer and winter seasons in the semi-arid farmlands.关键词
半干旱区/农田/DPM模型/粉尘释放Key words
semi-arid areas/farmland/DPM model/dust emission分类
资源环境引用本文复制引用
赖志强,张承中,高建华,刘立忠..半干旱农田地区DPM模型适用性初步研究[J].水土保持通报,2011,31(3):126-130,5.基金项目
陕西省自然科学基金“西安城市地表粉尘释放通量的观测与模拟” （）
陕西省教育厅专项科研基金“西安市地表粉尘释放通量数值模拟研究” （）
