ORIGINAL RESEARCH
Effects of Reseeding Duration and Mowing on the Soil Seed Bank of Alpine Meadows in the Sanjiangyuan Region
De Kejia 1,2
,
 
,
 
,
 
Wei Xijie 1,2
,
 
,
 
Wang Wei 1,2
,
 
,
 
,
 
 
 
 
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1
Qinghai University, Xining 810016, Qinghai, China
 
2
Academy of Animal and Veterinary Sciences, Qinghai University, Xining 810016, Qinghai, China
 
3
College of Forestry and Grassland, Qinghai University, Xining 810016, Qinghai, China
 
4
Grassland Work Station of Henan County, Huangnan Tibetan Autonomous Prefecture, Qinghai 811599, China
 
 
Submission date: 2025-09-03
 
 
Final revision date: 2025-11-21
 
 
Acceptance date: 2026-01-23
 
 
Online publication date: 2026-03-18
 
 
Corresponding author
De Kejia   

Qinghai University, Xining 810016, Qinghai, China
 
 
 
KEYWORDS
TOPICS
ABSTRACT
The soil seed bank is fundamental to vegetation regeneration and the long-term stability of alpine meadow communities. Understanding its response to management practices is essential for improving ecological restoration outcomes. In the Sanjiangyuan region, we systematically evaluated the effects of different reseeding durations and mowing regimes on soil seed bank density, soil physicochemical properties, and plant community characteristics, and applied structural equation modeling to disentangle the pathways linking these factors. Our results show that reseeding consistently enhances soil seed bank density by increasing plant species richness and promoting the accumulation of seeds from dominant Poaceae and Cyperaceae species. Mowing exhibited stage-dependent effects: it limited seed bank development during later stages of recovery but facilitated seed input when vegetation was still establishing. Soil nutrients – particularly available nitrogen – were identified as primary drivers of seed bank variation, exerting stronger influences than plant community attributes. Structural equation modeling further revealed that reseeding indirectly strengthens the seed bank through its positive effect on species richness, whereas mowing may weaken this pathway by reducing plant diversity or altering nutrient availability. These findings highlight the tight coupling between aboveground vegetation recovery and belowground propagule reserves and provide a scientific basis for optimizing reseeding–mowing combinations to enhance the restoration efficiency of degraded alpine meadows.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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