The impact of short-rotation hybrid aspen (Populus tremula L. × P. tremuloides Michx.) plantations on nutritional status of former arable soils

摘要: Abstract The area of short-rotation forest (SRF) plantations with hybrid aspen (Populus tremula L. × P. tremuloides Michx.) for pulp and energy wood production in approximately 25-year rotation period has increased considerably during the last few decades Northern Europe on previous agricultural lands. However, little is known about how this new land use will alter chemical properties soils long-term long nutrients from land’s sustain high productivity trees. Little also dynamics soil micronutrients plantations’ influence subsoil layers. Repeated monitoring was carried out at ages 5 (young) 15 years (midterm) to detect changes characteristics, including reaction (pHKCl), concentrations organic carbon (Corg) A- B-horizon 51 permanent experimental plots. main soil- stand-related factors responsible properties, were analyzed. Significant observed both A-horizon B-horizon. In A-horizon, pHKCl (−0.2 units), Ca (−19.4%) B (−25.8%) had decreased while total N (+5.8%), Cu (+20.3%) Mn (+21.3%) increased. B-horizon, (−23.4%), Mg (−12.8%) (−45.0%) decreased, Corg (+17.2%) (+53.8%) available P, K remained unchanged. Reduction characteristics mainly occurred where their initial level been (this relationship Corg, B). Several more (or less) tree growth vigorous (in A-horizon: pHKCl, B; B-horizon: Soil cation exchange capacity, base saturation moisture conditions explained some variation changes. Relatively loss faster growing indicates possible future limitations essential micronutrient. To summarize, first generation planted former fields significantly altered (pHKCl) but did not show significant depletion primary macronutrients (N, K) carbon.