水土保持研究2025，Vol.32Issue(6)：57-67,11.DOI:10.13869/j.cnki.rswc.2025.06.010
东北的西部典型风蚀区各类型土壤颗粒分形特征对风蚀的响应
Response of fractal characteristics of various soil particle types to wind erosion in a typical wind erosion area of western Northeast China
摘要
Abstract
[Objective]To clarify the response mechanism of different types of soil particle characteristics to wind erosion in the black soil region of Northeast China,and provide a scientific basis for soil conservation in wind erosion areas.[Methods]A typical area in the wind erosion belt of western Northeast China(5 800 km2)was taken as the research object.A total of 122 sampling points were randomly set across the entire area,covering four soil types:aeolian sandy soil,meadow soil,chernozem,and saline-alkali soil,and soil samples were collected from the 0-20 cm and 20-30 cm layers.The soil volume fractal dimension was used to characterize the comprehensive distribution features of soil particles.The wind erosion modulus was estimated using the revised wind erosion equation(RWEQ)model.Environmental factors were obtained by combining field surveys with remote sensing images to comprehensively analyze the response of soil particle fractal characteristics to wind erosion.[Results](1)The content of particles smaller than 50 μm in the surface soil could to some extent reflect the impact degree of wind erosion on the soil in the past.Chernozem had the highest volume percentage of particles smaller than 50 μm(75.45％),indicating a relatively low degree of wind erosion impact,while aeolian sandy soil had the lowest content of particles smaller than 50 μm(52.64％),indicating the greatest degree of wind erosion impact.(2)Aeolian sandy soil had a relatively low vegetation coverage(67.43％)and was the most sensitive to wind erosion.Saline-alkali soil had the highest vegetation coverage(75.46％)and the weakest sensitivity to wind erosion.(3)Wind erosion decreased the fractal dimension of the soil surface layer,reducing the complexity and stability of soil particles,which further reduced the fractal dimension of the plow pan soil.(4)When vegetation coverage and soil moisture decreased,saline-alkali soil and chernozem with higher soil fractal dimension faced a higher risk of wind erosion.[Conclusion]Different types of soil particle fractal characteristics respond differently to wind erosion.The soil fractal dimension can well reflect the past wind erosion risk and the degree of wind erosion impact on soil in the study area.关键词
土壤类型/土壤颗粒组成/分形维数/土壤风蚀/东北风蚀区Key words
soil types/soil particle composition/fractal dimension/soil wind erosion/wind erosion area of Northeast China分类
农业科技引用本文复制引用
张成博,张少良,冯兰茜,汪浩,徐微涛,庄亚茹,闫鹏科..东北的西部典型风蚀区各类型土壤颗粒分形特征对风蚀的响应[J].水土保持研究,2025,32(6):57-67,11.基金项目
黑龙江省自然科学基金联合基金重点项目"黑土侵蚀沟防蚀增效植物覆被模式构建和配套施肥技术研究"(ZL2024D001) （ZL2024D001）
