水土保持学报2011，Vol.25Issue(1)：20-24,29,6.
北京市平原区农田土壤蚀积特征分析
Analysis on Farmland Soil Erosion and Deposition Features in Beijing Plain
摘要
Abstract
By bays of field observations, wind-tunnel simulation and laboratory analysis, under the common function of soil wind-erosion and atmospheric dustfall, the farmland soil erosion and sedimentary characteristics in Beijing plain and its effect on soil physical and chemical properties were studied.The results showed that soil erosion intensity in 2009 was 0.64 t/hm2 ,with particle diameter of 20～80 μm in the main;the atmospheric dustfall intensity is 1.00 t/hm2 , with particle diameter of 10～50 μm in the main.The intensity of dustfall was over that of soil erosion, so deposition happenned in farmland surface with strength of about 0.36 t/hm2 · a.Size of dustfall particles was smaller obviously than that of wind-erosion dusts, this leaded to the soil particles becoming finer and finer by long-term erosion and deposition effect.The content of heavy metal elements in dustfall was higher than that of soil and wind-erosion dusts, which leaded to the accumulation of heavy metals in soil.关键词
土壤风蚀/大气降尘/蚀积特征/北京Key words
soil wind-erosion/ atmospheric dustfall/ erosion and deposition feature/ Beijing分类
农业科技引用本文复制引用
王仁德,邹学勇,赵婧妍,张艺磊..北京市平原区农田土壤蚀积特征分析[J].水土保持学报,2011,25(1):20-24,29,6.基金项目
国家"十一五"科技支撑项目(2006BAD26B03) （2006BAD26B03）
国家自然科学基金项目(40971011) （40971011）
