不同放牧强度下荒漠草原风蚀物形貌特征研究

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中图分类号：S812 文献标识码：A 文章编号：1007-0435（2025）11-3766-08

引用格式：，李治国等.不同放牧强度下荒漠草原风蚀物形貌特征研究[J].草地学报，2025，33（11）：3766—3773 DUAN Lei-yu，LI Zhi-guo，CUI Le，et al.Studyon the Morphological Characteristicsof Wind Erosion in Desert Steppe Under Different Grazing Intensities[J]. Acta Agrestia Sinica，2025，33（11） ：3766-3773

Study on the Morphological Characteristics of Wind Erosion in Desert Steppe Under Different Grazing Intensities

DUANLei-yu，LI Zhi-guo，CUI Le， SUN Xue-yan，WANG Xin-yu，LYU Shi-jie （College ofGrassand Science，InnerMongoliaAgricultural University，KeyLaboratoryofGrassandResources（IMAU）， MinistryofEducation，Hohhot，InnerMongoliaOlooll，China）

Abstract： In order to explore the effects of grazing intensity on wind erosion in desert steppe，this study took Iner Mongolia desert steppe as the research object，and set up control （no grazing），light （LG），moderate （MG）and heavy（HG）grazing.Four sets of sand collection devices with four sand colection heights were placed in each grazingarea，which were 0cm ， 10cm ， 30cm and 100cm ，respectively. By using scanning electron microscopy and specific surface area analyzer，the observation of wind erosion in the growing season of 2024 was caried out.The results showed that the proportion of cluster and flake particles in wind erosion par ticles was mainly afected by the height of sand collection，and the proportion of block particles was the largest and obviously affected by grazing intensity. The content of particles greater than 0.25mm gradually decreased with the increase of grazing intensity and sand collection height，while the content of particles less than O.25 mm changed in the opposite way.The specific surface area of wind erosion particles increased with the increase of sand collction height and grazing intensity. In summary，grazing would aggravate soil wind erosion to a certain extent.With the increase of grazing intensity，the wind erosion particles gradually became refiner，and the adsorption capacity of wind erosion particles increased，which would pose a threat to the health of ecosystemlevel human beings.

Key Words：Scanning electron microscope;Desert steppe;Grazing; Wind erosion;Morphological characteristics

放牧是人类利用草地资源的主要方式之一，长期不合理的放牧方式会对草原生态系统造成压力，加剧草原退化，对生态系统稳定和草地可持续发展造成严重影响[1]。（剩余15117字）