Increasing grazing intensity enhances vegetation elemental coupling but reduces soil elemental coupling in alpine meadows DOI

yihe zhao,

Jingyi Dong, Yuhan Liu

и другие.

Опубликована: Май 13, 2025

Abstract Background Grazing alters the biogeochemical cycles in grassland ecosystems, with elemental coupling serving as an effective measure of this impact. The concept allows for inclusion various mineral elements, offering new insights into effects grazing on material cycling. Methods This study focused a typical alpine meadow eastern Qinghai-Tibet Plateau, where we measured total content dominant vegetation, soil exchangeable ions, and physicochemical properties. We analysed changes plant used Structural Equation Modeling (SEM) approach to investigate mechanisms driving these changes. Results With increasing intensity, concentrations heavy metals such copper (Cu²⁺), zinc (Zn²⁺), manganese (Mn²⁺), iron (Fe³⁺) significantly increased soil, while contents essential nutrients Mg, Ca, Na decreased vegetation. Increasing intensity enhanced vegetation element but reduced coupling, increases 52.8% decreases 16.8% under grazing, respectively. SEM analysis revealed significant direct coupling. Conclusion investigated how affects Plateau. While enhances it reduces coupling.This provides perspectives scientific basis rational management sustainable use.

Язык: Английский

Increasing grazing intensity enhances vegetation elemental coupling but reduces soil elemental coupling in alpine meadows DOI

yihe zhao,

Jingyi Dong, Yuhan Liu

и другие.

Опубликована: Май 13, 2025

Abstract Background Grazing alters the biogeochemical cycles in grassland ecosystems, with elemental coupling serving as an effective measure of this impact. The concept allows for inclusion various mineral elements, offering new insights into effects grazing on material cycling. Methods This study focused a typical alpine meadow eastern Qinghai-Tibet Plateau, where we measured total content dominant vegetation, soil exchangeable ions, and physicochemical properties. We analysed changes plant used Structural Equation Modeling (SEM) approach to investigate mechanisms driving these changes. Results With increasing intensity, concentrations heavy metals such copper (Cu²⁺), zinc (Zn²⁺), manganese (Mn²⁺), iron (Fe³⁺) significantly increased soil, while contents essential nutrients Mg, Ca, Na decreased vegetation. Increasing intensity enhanced vegetation element but reduced coupling, increases 52.8% decreases 16.8% under grazing, respectively. SEM analysis revealed significant direct coupling. Conclusion investigated how affects Plateau. While enhances it reduces coupling.This provides perspectives scientific basis rational management sustainable use.

Язык: Английский

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