tSoil performance, in terms of quality and functioning of ecosystems, has generally focused on the amountand composition of soil organic matter (SOM), but short-term SOM changes are difficult to measure. Ourobjective was to identify biochemical markers that are routinely used and applicable to most ecosystemsas early indicators of soil quality change. A series of chemical and biochemical analyses were made in eachof four seasons on soils from the Oi, Ah, BW1, and BW2horizons beneath Pinus laricio, Abies alba, and Fagussylvatica in Calabria Apennines, Southern Italy. Our goal was to determine not only the effect but alsothe relative importance of each indicator on soil quality. Microbial biomass carbon (MBC), water solublephenols (WSP), and fluorescein diacetate hydrolase (FDA) were identified as early warning indicators ofsoil quality change. Seasonal changes were more pronounced for FDA activity and labile forms of SOM(WSP and MBC) than total SOM content. These three indicators reflect soil quality change due to differentfactors: MBC primarily reflects changes induced by vegetation, FDA displays modifications caused byclimatic factors, and WSP was most sensitive to soil depth. We suggest using these biochemical indicatorsrather than SOM to evaluate sustainability of forest management activities.
|Titolo:||Biological indicators to assess changes in soil ecosystem in a short time|
|Data di pubblicazione:||2014|
|Appare nelle tipologie:||1.1 Articolo in rivista|