Soil Wind Erosion Characteristics And Wind Erosion Estimation In Dry Farming Areas Of Wuchuan County

In order to find out the characteristics of soil particle wind erosion in typical land types in arid and semi-arid areas,quantitatively determine the amount of wind erosion loss during the year.The grassland,woodland,farmland and bare land of common land types in dry farming areas of Wuchuan County were used as research objects,and multi-fractal method was used to quantify.The differences in spatial distribution of soil particle wind erosion were analyzed,and the causes were analyzed.The modified field promotion model was used to estimate the wind erosion amount,and the soil wind erosion amount estimated by the particle size comparison method was compared to determine the accuracy of the model.The local wind erosion prediction model is applied to the local area.The test results are as follows::(1)The soil particle size composition of each land type in the study area is mainly composed of silt and sand,the average particle size is between 0.16?0.59mm;the particle size range of erodible particles is 110?270?m;the particle size of soil particles is Accumulation occurred within the range of 500?600?m.(2)The soil fractal dimension of the four land types is from large to small:grassland>farmland>woodland>bare land;the general dimension spectrum of soil particle size is "S" type and has a certain width;the multifractal spectrum function is single The peak-convex curve is asymmetrical,and the soil particle size is not uniform.(3)The particle size of the non-corrodible particles in this area is larger than 0.8mm.The soil wind erosion model established by the correction can better estimate the soil wind erosion in the study area,and the model accuracy is 86.37%.The amount of soil wind erosion in the study area is farmland>bare land>forest land>grassland.