000148914 001__ 148914 000148914 005__ 20250123152145.0 000148914 0247_ $$2doi$$a10.1016/j.geoderma.2021.115211 000148914 0248_ $$2sideral$$a126141 000148914 037__ $$aART-2021-126141 000148914 041__ $$aeng 000148914 100__ $$0(orcid)0000-0001-8146-0364$$aMora Hernández, J.L.$$uUniversidad de Zaragoza 000148914 245__ $$aFactors controlling the buildup of humus and particulate organic matter in European beech and Scots pine stands at their southernmost distribution limits (Moncayo Massif, Spain) 000148914 260__ $$c2021 000148914 5060_ $$aAccess copy available to the general public$$fUnrestricted 000148914 5203_ $$aForests of European beech (Fagus sylvatica) and Scots pine (Pinus sylvestris) in the Iberian Peninsula contain some of the southernmost localities of these species and thus may display highly sensitive responses to environmental variations as a result of subjection to particular climate stresses. In this study, we investigated the effects of elevation and dominant tree species (beech vs. pine) on the buildup of organic matter (OM) and nutrients within the humus (O layers) and particulate organic matter (POM) of the topsoil (Ah layer) in centennial Scots pine forests compared to that in natural beech forests along an altitudinal gradient from 1100 to 1600 m.a.s.l. in the Moncayo Massif (northern Spain). The contents of nonstructural, hemicellulose, cellulose, lignin-like, soluble ash and free lipid fractions and of C and major nutrients (N, P, S, K, and Ca) were analyzed and related to the buildup of OM within individual layers, which we used as an inverse surrogate for decomposition rates. The stocks of the studied variables in the humus and the POM were examined in relation to elevation and tree species. The highest storage values were found in the Scots pine sites at higher elevations in the form of thick layers of strongly decomposed organic matter (OH layers) and in the POM. Climate, as it related to elevation, was found to be the major driver of the early and intermediate stages of decomposition (represented by humus) but showed little effect on POM, which was more strongly affected by the tree species. The buildup of OM has its largest correlation (negative) with the content of Ca (which was higher under beech vegetation and decreased with increasing elevation), suggesting an effect of Ca in improving habitat conditions for biological activity. © 2021 Elsevier B.V. 000148914 536__ $$9nfo:eu-repo/grantAgreement/ES/UZ/UZ2020-TEC-01 000148914 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000148914 590__ $$a7.422$$b2021 000148914 591__ $$aSOIL SCIENCE$$b4 / 39 = 0.103$$c2021$$dQ1$$eT1 000148914 592__ $$a1.875$$b2021 000148914 593__ $$aSoil Science$$c2021$$dQ1 000148914 594__ $$a11.1$$b2021 000148914 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000148914 700__ $$aMolina Clerencia M. 000148914 700__ $$aGirona-García A. 000148914 700__ $$0(orcid)0000-0003-0630-1181$$aMartí Dalmau C.$$uUniversidad de Zaragoza 000148914 700__ $$0(orcid)0000-0002-1006-5030$$aBadía Villas D.$$uUniversidad de Zaragoza 000148914 7102_ $$15011$$2705$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Producción Vegetal 000148914 7102_ $$15011$$2240$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Edafología y Quím.Agríco. 000148914 773__ $$g401 (2021), 115211 [15 pp]$$pGeoderma$$tGeoderma$$x0016-7061 000148914 8564_ $$s1080659$$uhttps://zaguan.unizar.es/record/148914/files/texto_completo.pdf$$yPostprint 000148914 8564_ $$s1723012$$uhttps://zaguan.unizar.es/record/148914/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000148914 909CO $$ooai:zaguan.unizar.es:148914$$particulos$$pdriver 000148914 951__ $$a2025-01-23-14:46:58 000148914 980__ $$aARTICLE