Sustainable soil management: Rhizosphere microbial contributions to erosion control in herbaceous vegetation systems

IF 6.8 1区农林科学 Q1 SOIL SCIENCE

Soil & Tillage Research Pub Date : 2025-09-06 DOI:10.1016/j.still.2025.106844

Daqing Peng , Chenghang Du , Runlai Xu , Jielin Liu , Xingyi Zhang , Mingming Guo , Xiaolei Kong , Xueshan Wang , Qiang Zhang

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引用次数: 0

Abstract

Effective erosion control is critical for sustainable land management and agricultural productivity, especially in sloped croplands. As the dynamic interface between roots and soil, the rhizosphere provides a unique ecological niche for microorganisms that can support plants in maintaining soil stability and resisting erosion. However, the mechanisms by which vegetation-microbe-soil interactions regulate erosion resistance remain poorly understood. In this two-year field experiment on sloped Mollisols cropland, we evaluated the soil erosion resistance of four herbaceous vegetation patterns and examined the synergistic interactions among vegetation, rhizosphere microorganisms, and soil properties that contribute to their effectiveness. Our results showed that vegetation traits such as higher aboveground biomass and more developed root systems, along with improved soil nutrients and physical properties, significantly enhance soil erosion resistance. This enhancement was mediated by vegetation-driven changes in rhizosphere bacterial community structure and a reduction in fungal diversity. Extreme rainfall events increased the stochasticity of both bacterial and fungal communities, reducing within-community interactions by 26.7 %-57.0 % and decreasing ecological network stability by 12.1 %-32.3 %. Among the tested patterns, the mixed sowing of erect milkvetch, timothy, and awnless brome demonstrated the highest erosion control efficiency, with an average soil anti-scour capacity of 50.8 L g⁻¹ , representing a 32.0 %-114.1 % improvement over the other treatments. These findings offer practical guidance for optimizing herbaceous vegetation strategies to improve soil stability and support sustainable land management in erosion-prone agroecosystems.

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可持续土壤管理：根际微生物对草本植被系统侵蚀控制的贡献

有效的侵蚀控制对可持续土地管理和农业生产力至关重要，特别是在坡地。根际作为根与土壤之间的动态界面，为微生物提供了独特的生态位，支持植物维持土壤稳定和抵抗侵蚀。然而，植被-微生物-土壤相互作用调节抗侵蚀能力的机制仍然知之甚少。在为期两年的Mollisols坡耕地田间试验中，我们评估了四种草本植被模式的土壤侵蚀抗性，并研究了植被、根际微生物和土壤特性之间的协同相互作用，这些相互作用有助于其有效性。研究结果表明，高地上生物量和较发达根系等植被性状，以及土壤养分和物理性质的改善，显著增强了土壤抗侵蚀能力。这种增强是由植被驱动的根际细菌群落结构变化和真菌多样性减少介导的。极端降雨事件增加了细菌和真菌群落的随机性，使群落内相互作用降低了26.7% % ~ 57.0% %，使生态网络稳定性降低了12.1% % ~ 32.3% %。其中，直立沙雀草、提莫草和无棚雀麦混播的防蚀效果最好，土壤抗冲刷能力平均为50.8 L g⁻¹ ，比其他处理提高了32.0 %-114.1 %。这些发现为优化草本植被策略以提高土壤稳定性和支持易侵蚀农业生态系统的可持续土地管理提供了实践指导。

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来源期刊

Soil & Tillage Research 农林科学-土壤科学

CiteScore

13.00

自引率

6.20%

发文量

266

审稿时长

5 months

期刊介绍： Soil & Tillage Research examines the physical, chemical and biological changes in the soil caused by tillage and field traffic. Manuscripts will be considered on aspects of soil science, physics, technology, mechanization and applied engineering for a sustainable balance among productivity, environmental quality and profitability. The following are examples of suitable topics within the scope of the journal of Soil and Tillage Research: The agricultural and biosystems engineering associated with tillage (including no-tillage, reduced-tillage and direct drilling), irrigation and drainage, crops and crop rotations, fertilization, rehabilitation of mine spoils and processes used to modify soils. Soil change effects on establishment and yield of crops, growth of plants and roots, structure and erosion of soil, cycling of carbon and nutrients, greenhouse gas emissions, leaching, runoff and other processes that affect environmental quality. Characterization or modeling of tillage and field traffic responses, soil, climate, or topographic effects, soil deformation processes, tillage tools, traction devices, energy requirements, economics, surface and subsurface water quality effects, tillage effects on weed, pest and disease control, and their interactions.