ABSTRACT

A detailed assessment of a pasture’s functioning based on soil properties characterization, floristic composition, and ‘functional summary’ by evaluating competitor–stress tolerator–ruderal (CSR) strategies is provided for a doline in Central Italian Alps. A floristic survey was carried out at 35 sampling points, representative of the main topographic features, soil and vegetation types; the functional profile at the community level was evaluated by assessing for each species its Grime’s CSR strategy; each point was characterized through soil profiles and topsoil (0–10 cm) sampling; pH, soil organic carbon and total nitrogen, available P, soil humus fraction, root density, bulk density, water content, and available water capacity were determined. Our study showed i) a strong relationship between vegetation, soil properties, topography, and grazing; ii) a prevalence of stress-tolerant strategies; iii) the ability of plant strategy variation to reflect the ecological parameters; and iv) the vegetation potentiality to be an indicator of environmental spatial variability.

摘要

在意大利中部阿尔卑斯山，为一条line鱼提供了基于土壤特性表征，植物区系和“功能摘要”的牧场功能的详细评估，方法是评估竞争者-耐压者-竞标者（CSR）策略。在35个采样点进行了一次植物学调查，代表了主要地形特征，土壤和植被类型；通过评估每个物种的格莱姆（Grime）CSR策略，评估了社区一级的功能概况；通过土壤剖面和表土（0-10厘米）采样来表征每个点；测定pH，土壤有机碳和总氮，有效磷，土壤腐殖质分数，根系密度，容重，含水量和有效水容量。我们的研究表明：i）植被，土壤特性，地形和放牧之间存在密切关系；ii）压力容忍策略的普遍性；iii）植物策略变化反映生态参数的能力；iv）植被潜力可作为环境空间变异性的指标。