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

doi:10.11733/j.issn.1007-0435.2025.11.027

Acta Agrestia Sinica ›› 2025, Vol. 33 ›› Issue (11): 3766-3773.DOI: 10.11733/j.issn.1007-0435.2025.11.027

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

DUAN Lei-yu, LI Zhi-guo, CUI Le, SUN Xue-yan, WANG Xin-yu, LYU Shi-jie

1. College of Grassland Science, Inner Mongolia Agricultural University, Key Laboratory of Grassland Resources (IMAU), Ministry of Education, Hohhot, Inner Mongolia 010011, China

Received:2025-04-23 Revised:2025-08-22 Published:2025-11-13

不同放牧强度下荒漠草原风蚀物形貌特征研究

段雷雨, 李治国, 崔乐, 孙雪岩, 王新宇, 吕世杰

1. 内蒙古农业大学草业学院, 草地资源教育部重点实验室, 内蒙古呼和浩特 010018

通讯作者: 李治国,E-mail:nmndlzg@163.com
作者简介:段雷雨（1998-），女，汉族，内蒙古乌兰察布人，硕士研究生，主要从事草地生态与管理研究，E-mail：15849192317@163.com
基金资助:
内蒙古自治区科技计划项目“荒漠草原家庭牧场生态修复与生产经营优化管理技术研究与示范”（2022ZY0022）；内蒙古自治区一流学科科研专项项目“退化草地精准修复技术及家庭牧场草畜优化管理研究”（YLXKZX-NND-029）资助

Abstract

Abstract: In order to explore the effects of grazing intensity on wind erosion in desert steppe， this study took Inner 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 collection heights were placed in each grazing area， which were 0 cm， 10 cm， 30 cm and 100 cm， respectively. By using scanning electron microscopy and specific surface area analyzer， the observation of wind erosion in the growing season of 2024 was carried out. The results showed that the proportion of cluster and flake particles in wind erosion particles was mainly affected 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 0.25 mm gradually decreased with the increase of grazing intensity and sand collection height， while the content of particles less than 0.25 mm changed in the opposite way. The specific surface area of wind erosion particles increased with the increase of sand collection 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 ecosystem-level human beings.

Key words: Scanning electron microscope, Desert steppe, Grazing, Wind erosion, Morphological characteristics

摘要： 为探究放牧强度对荒漠草原风蚀作用的影响，本研究以内蒙古荒漠草原为研究对象，设置对照（无放牧）、轻度（LG）、中度（MG）及重度（HG）放牧，每个放牧区中放置4套具有4个集沙高度（0 cm，10 cm，30 cm和100 cm）的集沙装置，通过使用扫描电镜和比表面积分析仪对2024年生长季风蚀物观测。分析结果表明，风蚀物颗粒中簇状和片状占比主要受集沙高度的影响，块状颗粒占比最大且受放牧强度的影响较明显；大于0.25 mm的颗粒含量随放牧强度和集沙高度的增加逐渐减少，而小于0.25 mm的颗粒含量变化结果与之相反；风蚀物颗粒比表面积随集沙高度和放牧强度增大而增大。综上所述，放牧在一定程度上会加剧土壤风蚀，放牧强度增大，风蚀物颗粒逐渐细化，增大风蚀物颗粒污染物吸附容量，将对生态系统及人类健康造成威胁。

关键词: 扫描电子显微镜, 荒漠草原, 放牧, 风蚀, 形貌特征

CLC Number:

S812

DUAN Lei-yu, LI Zhi-guo, CUI Le, SUN Xue-yan, WANG Xin-yu, LYU Shi-jie. Study on the Morphological Characteristics of Wind Erosion in Desert Steppe Under Different Grazing Intensities[J]. Acta Agrestia Sinica, 2025, 33(11): 3766-3773.

段雷雨, 李治国, 崔乐, 孙雪岩, 王新宇, 吕世杰. 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.

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

不同放牧强度下荒漠草原风蚀物形貌特征研究

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