Aim To analyze the
particle-size distribution of
erosion sediment among courtyards,roads and open space between house and
courtyards in more sediment of northern Shaanxi province.Methods Based on the data of Erosion Soil of Rural Settlements in More Sediment Area of Shaanxi Province,using the instrument of Mastersizer-S to measure the ParticleSize Distribution.Results It is showed that the shape of particle-size distribution is most like the English letter "M",and the percentage of
coarse silt(10~50 μm) and clay fraction(1~5 μm) is higher than the other in Yulin,Suide and Yan'an.But it is presented that particle-size distribution exists the divergence in commonness when under the same rain intensity.The percentage of <5 μm clay fraction in roads is smaller than courtyards and open space,but the percentage of >50 μm coarse
silt in roads is larger than that of courtyards and open space.Conclusion It is showed that the roads between house and courtyards have the strongest capacity to transport more coarse silt,so that on the roads there have the biggest erosion intensity.The courtyards and open space have less capacity to transport more coarse silt because the flat gradient.So they transport more clay fraction in sediment,and have less erosion intensity.The
soil erosion of roads between house and courtyards should not be ignored during the control of soil erosion in Loess plateau.
More abstracts about the Particle-size distribution of erosion sediment of erosion soil of rural settlements in more sediment