Publications by authors named "Xijie Wei"
Introduction: Plant litter enters the soil as the main nutrient for alpine meadow ecosystems, and the amount of litter input has a significant effect on alpine meadow plant diversity, ecological niches, and interspecific connectivity.
Methods: The ecological niche width, ecological niche overlap and interspecific associations of alpine meadow species in the Sanjiangyuan area of the Qinghai-Tibetan Plateau were investigated using ecological statistical methods, and the competitive linkages between species and limited resources within the community and the stable coexistence among populations under different levels of plant litter inputs were explored.
Results: (1) Litter inputs could significantly increase the plant diversity and aboveground biomass of alpine meadows, and the species with the highest importance value was Clarke.
Article Synopsis
- The study highlights the significant role of plant species diversity in alpine meadows on the Qinghai-Tibet Plateau, particularly in response to various levels of nitrogen addition.
- The research found that moderate nitrogen addition (30 g N/m²) improved species diversity, while excess nitrogen (60 g N/m²) led to a decline in diversity and increased competition among plant species.
- The results indicate that while grasses benefit from higher nitrogen levels, leading to increased niche width and reduced overlap with other species, this also intensifies interspecific competition and alters community dynamics.
Background: Daye No.3 is a novel cultivar of alfalfa (Medicago sativa L.) that is well suited for cultivation in high-altitude regions such as the Qinghai‒Tibet Plateau owing to its high yield and notable cold resistance.
View Article and Find Full Text PDFDespite extensive research on the impact of warming and nitrogen deposition on soil organic carbon components, the response mechanisms of microbial community composition and enzyme activity to soil organic carbon remain poorly understood. This study investigated the effects of warming and nitrogen deposition on soil organic carbon components in the Tibetan Plateau alpine meadow and elucidated the regulatory mechanisms of microbial characteristics, including soil microbial community, enzyme activity, and stoichiometry, on organic carbon components. Results indicated that both warming and nitrogen deposition significantly increased soil organic carbon, readily oxidizable carbon, dissolved organic carbon, and microbial biomass carbon.
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