Soil-carbon sequestration and soil-carbon fractions, comparison between poplar plantations and corn crops in south-eastern Spain

摘要: Abstract The potential of soils as a sink atmospheric carbon and the implications related to mitigate greenhouse-gas emissions are well recognized. raising tree crops on agricultural can augment soil-carbon sequestration more than do other uses such corn crops. Thus, 6 plots with different durations use poplar plantation (5, 10, 20, 30, 50, 100 years) were studied in comparison adjacent crop. pool poplar-plantation was positively correlated time at three soil depths (0–20, 20–50, 50–100 cm), mean annual increase being 1.16 Mg C ha −1 year . Poplar-plantation also increased total content effective way because duration most recalcitrant forms. Therefore, land-use change from is economically profitable positive both for organic-carbon efficiency by non-oxidizable forms soil.