泥沙研究2025，Vol.50Issue(3)：9-16,8.DOI:10.16239/j.cnki.0468-155x.2025.03.002
接坝区退耕坡地风沙输沙率及粒径特征分析
Analysis of sand transport rate and grain size of wind-sand on withdrawing cultivated slope land in transitional area from plateau to plain
摘要
Abstract
To clarify the characteristics of wind erosion and sand transport on withdrawing cultivated slope land in the transitional area from plateau to plain,a representative slope land in Xiaobazi watershed is selected as the study area.Based on the observation data between 2018 and 2020,the sand transport rates and particle size distributions on different underlying surface durin different seasons have been analyzed,and the strategy for mitigating wind erosion is proposed.The results show that spring is the period of the strongest wind erosion,with average sand transport rates of 2.68× 102 kg/(m2·d)on mid-slope sandy land and 5.43× 102 kg/(m2·d)on lower-slope farmland,followed by winter,and then summer and autumn.Regarding surface types,the sand transport rates for the bare rocky land at the slope top,the mid-slope sandy land,the grassland at the slope bottom,and the lower-slope farmland are 34.28×102,34.08×102,7.13×102,and 8.20×102 kg/(m2·h),respectively.The wind-eroded particles are primarily silt,followed by very fine sand and fine sand.The study highlights that withdrawing cultivated slope land and tilled farmland under the slope are the critical surface types for wind erosion control in the transition zone,and the spring is the key prevention and control period.关键词
风沙流结构/输沙率/粒径/退耕坡地/接坝区Key words
wind-sand flow structure/sand transport rate/sand grain size/withdrawing cultivated slope land/transitional area from plateau to plain分类
农业科技引用本文复制引用
许晶晶,杜鹏飞,陈吟,赵莹,陈康..接坝区退耕坡地风沙输沙率及粒径特征分析[J].泥沙研究,2025,50(3):9-16,8.基金项目
国家重点研发计划项目(2016YFC0500802) （2016YFC0500802）
水利部水土保持业务项目(1261523410001) （1261523410001）
