地震是影响生态系统功能的环境干扰,健康,生物多样性,但是它们对植物-土壤界面的潜在影响仍然知之甚少。在这项研究中,马杜地震断层附近和远离地区的草地栖息地,青藏高原上一个典型的高寒地区,是随机选择的。强调了地震在短期内对土壤性质和植物养分含量的影响,并研究了它们与社区多样性和生产力的潜在关系。根据研究结果,玛多地震导致高寒草地生态系统土壤养分含量下降,特别是土壤TC,TN,TP,TCA,AP,AK,NH4+-N,和SOC,抑制了N的吸收,Ca,和植物的镁营养。此外,社区的多样性和生产力受到直接和间接地震途径的影响。地震断裂对土壤结构的负面影响对植物群落多样性的直接影响最为显著。地震还通过降低土壤N含量和抑制植物养分的吸收间接降低了群落生产力。我们的发现表明,地震可能会通过影响植物-土壤界面的养分利用率来降低QTP上高山草地生态系统的稳定性。
Earthquakes are environmental disturbances affecting ecosystem functioning, health, and biodiversity, but their potential impacts on plant-soil interface are still poorly understood. In this study, grassland habitats in areas near and away from the seismo-fault in Madou, a region typical of alpine conditions on the Qinghai-Tibetan Plateau, were randomly selected. The impacts of earthquake on soil properties and plant nutrient content in the short term were emphasized, and their potential relationships with community diversity and productivity were examined. According to the findings of the study, the Maduo earthquake led to a decrease in soil nutrient content in alpine grassland ecosystems, especially soil TC, TN, TP, TCa, AP, AK, NH4 +-N, and SOC, and inhibited the absorption of N, Ca, and Mg nutrients by plants. In addition, the diversity and productivity of communities were affected by both direct and indirect earthquake pathways. The negative impacts of seismic fracture on soil structure had the most significant direct impact on plant community diversity. Earthquakes also indirectly reduced community productivity by reducing the soil N content and inhibiting the absorption of plant nutrients. Our findings suggested that earthquakes could potentially decrease the stability of the alpine grassland ecosystem on the QTP by affecting nutrient availability at the plant-soil interface.