森林管理影响树种的发生,输入到土壤分解器系统的有机物,因此,它可以改变土壤微生物群落和它所执行的关键生态系统功能。在这项研究中,我们比较了不同森林管理的潜在效果,矮矮人和高森林,土壤微生物功能多样性,两种森林的酶活性和化学物理土壤特性,土耳其橡木和山毛榉,在夏季和秋季。我们假设种植会影响土壤微生物功能多样性,总体上会减少。与我们的假设相反,在夏天,在两个小森林中,土壤微生物群落的功能多样性较高,表明砍伐树木后土壤中微生物群落的恢复力反应,发生在15-20年前。在山毛榉管理下的山毛榉森林中,与高森林相比,土壤有机质(以及土壤顽固和稳定的有机碳)含量较高可以解释土壤微生物功能多样性和代谢活性较高。在土耳其橡树林,尽管在管理之间观察到土壤微生物群落的功能多样性差异,对于其他研究的参数,差异主要与季节性有关。研究结果表明,土壤有机质的保存取决于森林的类型,但是土壤微生物群落能够在两个森林生态系统中进行大约15年的干预后恢复。因此,在这些森林生态系统中实施的管理类型,不会对土壤有机质库产生负面影响,保护微生物群落和潜在的土壤生态功能,在气候变化的情况下是可持续的。
Forest management influences the occurrence of tree species, the organic matter input to the
soil decomposer system, and hence, it can alter
soil microbial community and key ecosystem functions it performs. In this study, we compared the potential effect of different forest management, coppice and high forest, on
soil microbial functional diversity, enzyme activities and chemical-physical
soil properties in two forests, turkey oak and beech, during summer and autumn. We hypothesized that coppicing influences soil microbial functional diversity with an overall decrease. Contrary to our hypothesis, in summer, the functional diversity of soil microbial community was higher in both coppice forests, suggesting a resilience response of the microbial communities in the soil after tree cutting, which occurred 15-20 years ago. In beech forest under coppice management, a higher content of
soil organic matter (but also of
soil recalcitrant and stable organic carbon) compared to high forest can explain the higher soil microbial functional diversity and metabolic activity. In turkey oak forest, although differences in functional diversity of soil microbial community between management were observed, for the other investigated parameters, the differences were mainly linked to seasonality. The findings highlight that the soil organic matter preservation depends on the type of forest, but the soil microbial community was able to recover after about 15 years from coppice intervention in both forest ecosystems. Thus, the type of management implemented in these forest ecosystems, not negatively affecting soil organic matter pool, preserving microbial community and potentially soil ecological functions, is sustainable in a scenario of climate change.