RT info:eu-repo/semantics/article
T1 Nutrient release through litterfall in short rotation poplar crops in mediterranean marginal land
A1 Pérez, Paloma
A1 Barro, Ruth
A1 Pérez, Javier
A1 Fernández, Miguel J
A1 Moyano Gardini, Amelia Rut
A1 Ciria, Pilar
K1 Bosques y silvicultura
K1 Gestión forestal
K1 Biomasa
K1 Biomass
K1 Nutrient cycling
K1 Poplar
K1 Leaf litte
K1 Biomasa
K1 Ciclo de nutrientes
K1 Álamo
K1 Hojarasca
K1 2417.17 Nutrición Vegetal
AB A detailed knowledge of how poplar leaf litter decomposes under Mediterranean marginal conditions can help to minimize fertilization inputs and determine the profitability and sustainability of energy crops established in these particularly sensitive areas for bioenergy. Leaf litter decomposition was monitored for 32 months using the litterbag technique in a poplar crop under short rotation conditions in a marginal Mediterranean area. In addition, nutrient dynamics, together with the production and composition of the woody and foliar biomass produced, were studied for a period of four years. Leaf litter decomposition was relatively slow, particularly during the winter months, and accelerated in early spring, coinciding with the rainy season. At the end of the decomposition study 50% of the initial litterfall was decomposed, releasing roughly 60% of the N, 40% of the K, and 70% of the P initially present in fresh leaves. Annual yields of 6.0 dry Mg ha−1 were obtained. The aerial biomass produced the first year of the second rotation cycle extracted 83, 8.7, and 29 kg ha−1 of N, P, and K, respectively, whereas the amount of nutrients that were estimated to be naturally supplied to the system through leaf litter decomposition were 180 kg ha−1 of N, 19 kg ha−1 of P, and 30 kg ha−1 of K. Therefore, four years after establishing the energy crop, leaf litter was able to release higher amounts of primary macronutrients into the environment than the nutrient uptake by the produced aboveground biomass (woody and foliar biomass).
PB MDPI
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/59634
UL https://uvadoc.uva.es/handle/10324/59634
LA eng
NO Forests 2021, vol. 12, n. 9, 1185
NO Producción Científica
DS UVaDOC
RD 05-ene-2025