Soil aggregate stability is a key indicator of soil quality and susceptibility to water erosion. The water level fluctuation zone (WLFZ) of Three Gorges Reservoir (TGR) experiences hydraulic disturbances induced by rainfall, reservoir wave, and water-level fluctuation. Soil aggregate in this region has a unique mechanism of disintegration different from other terrestrial soils. The traditional methods of soil aggregate stability measurement cannot reveal the complex external factors of the soil in the WLFZ. In the present study, an attempt has been made to establish an approach mimicking the real situation in the WLFZ to deeply understand the effects of water movement and periodical wetting on soil aggregate stability in the WLFZ. The soil samples from different elevations were allowed to stay under wetting and wet-shaking conditions for 3 and 81 min, followed by a quantitative separation of disintegrated aggregates by wet-sieving. The mean differences between wetting and wet-shaking for the mean weight diameter (ΔMWD) were highly significant at all elevations for 81 min. Contrary, both treatments applied within a short time period disintegrated aggregates at the same magnitude. Additional to slaking, the kinetic energy applied to soil has induced a mechanical breakdown as a result of water movement. The difference of aggregate stability index (ASI) was highly significant among the elevations p < 0.001 and strongly significant between lower and upper elevations. The Cation Exchange Capacity (CEC) was the most predominant factor determining the stability of soil aggregates with r² = 0.61, 0.65, 0.69 (p < 0.05) and r² = 0.71, 0.7, 0.77 (p < 0.05) for ASI, GMD and MWD recorded after wetting and wet-shaking, respectively. Crucially, understanding different effects between arising impacts of water level fluctuations and periodical inundations on soil aggregate stability is a promise for future studies in areas experiencing similar conditions.

土壤团聚体的稳定性是土壤质量和水蚀敏感性的关键指标。三峡水库（TGR）的水位波动区（WLFZ）受到降雨，水库波动和水位波动引起的水力干扰。与其他陆地土壤不同，该区域的土壤聚集体具有独特的崩解机制。传统的土壤团聚体稳定性测量方法无法揭示WLFZ地区土壤的复杂外部因素。在本研究中，已尝试建立一种模仿WLFZ真实情况的方法，以深入了解WLFZ中水分运动和定期润湿对土壤团聚体稳定性的影响。将来自不同海拔的土壤样品在湿润和湿润的条件下放置3分钟和81分钟，然后通过湿筛定量分离崩解的团聚体。平均重量直径（ΔMWD）的湿润和湿润晃动之间的平均差异在所有海拔高度上持续了81分钟，都非常显着。相反，在短时间内应用的两种处理均以相同的量级分解聚集体。除分解外，由于水分运动，施加在土壤上的动能还引起了机械故障。在海拔高度p <0.001之间，骨料稳定性指数（ASI）的差异非常显着，而在较低海拔高度和较高海拔高度之间的差异非常明显。²  = 0.61，0.65，0.69（P <0.05）和r ²  = 0.71，0.7，润湿性和湿摇动，分别后记录0.77（P <0.05）对ASI，GMD和MWD。至关重要的是，了解水位波动产生的影响与定期淹没对土壤团聚体稳定性之间的不同影响，对于今后在类似条件的地区进行研究提供了希望。