Manganese uptake by red maples in response to mineral dissolution rates in soil

Manganese (Mn) is an essential plant micronutrient that influences photosynthesis, ecosystem productivity, and soil carbon storage. Our objective was to quantify how Mn uptake by forest vegetation relates to Mn release into soil solution through mineral dissolution. A greenhouse pot experiment was conducted to quantify Mn uptake by red maple saplings as a function of mineral solubility to test whether Mn uptake was limited by the supply of Mn to soil solution. Differences in soil microbial community composition between treatments, particularly amongst Mn cycling bacteria and fungi, were also evaluated to assess potential microbial impacts on observed Mn fluxes.

锰（Manganese, Mn）是植物必需的微量营养元素，可对光合作用、生态系统生产力及土壤碳储量产生影响。本研究旨在量化森林植被对锰的吸收与矿物溶解释放入土壤溶液的锰之间的关联。为此开展了温室盆栽试验，以红枫幼苗的锰吸收量作为矿物溶解度的函数开展量化分析，以此检验锰吸收是否受到土壤溶液中锰供给的限制。本研究同时评估了不同处理组间土壤微生物群落组成的差异，尤其是参与锰循环的细菌与真菌的群落差异，以探究微生物对观测到的锰通量的潜在影响。