000129341 001__ 129341
000129341 005__ 20240109134258.0
000129341 0247_ $$2doi$$a10.1016/j.geoderma.2021.115169
000129341 0248_ $$2sideral$$a126518
000129341 037__ $$aART-2021-126518
000129341 041__ $$aeng
000129341 100__ $$0(orcid)0000-0001-8146-0364$$aMora Hernández, Juan Luis$$uUniversidad de Zaragoza
000129341 245__ $$aChanges in pools of organic matter and major elements in the soil following prescribed pastoral burning in the central Pyrenees
000129341 260__ $$c2021
000129341 5060_ $$aAccess copy available to the general public$$fUnrestricted
000129341 5203_ $$aHigh-mountain soils are rich in partially decomposed organic matter, which is highly sensitive to mineralization and fire. Prescribed burning is performed in the Pyrenees to keep subalpine grasslands open for grazing. The compositions of the ash, litter and duff layers, and the particulate organic matter (POM) of the topsoil in the 0–1, 1–2, 2–3, and 3–5 cm depths were analyzed in relation to the nutrient availability after the prescribed burning of a stand encroached by erizón (Echinospartum horridum). The concentrations of C, N, P, and S and organic components (nonstructural, hemicellulose, cellulose, and lignin-type) were determined before the prescribed burn and 0, 6, 12, 18, and 24 months after the prescribed burn. The fire consumed the aboveground biomass, the litter and part of the duff layer, and the most thermostable (i.e., lignin-type) components and the least volatile elements (P, S) were selectively preserved in the resulting ash. Prescribed burning caused significant losses of organic-C and N only in the 0–1 cm depth (–72% and –68%, respectively). The organic-C loss was mostly (82%) from the POM, whereas the N loss was from more similar proportions of the POM (57%) and the nonparticulate organic matter (NPOM) (43%). However, few changes were observed in the composition of the organic matter, which pointed to a largely uneven combustion that resulted in a substantial part of the organic matter remaining largely untouched by the fire. After 6 months, the duff layer was depleted in hemicellulose by 32% compared to immediately after the burn, and fragmentation of the POM into the NPOM was observed. During the second spring, N- and P-rich charred POM were incorporated into the top 1 cm, while C-rich charcoal particles underwent fragmentation and vertical transport into the deeper soil. The preburn ecosytem was limited by P, and likely also by S. The plant available N showed transient increases of 1.5–2.1 times the immediate postburn levels for nitrate-N at 12 months after burning, and of up to 10–20 times for ammonium-N at 18 months. In contrast, the concentrations of plant-available P and S gradually declined to 1.8–3.3 and 1.8–4.0 times, respectively, lower at 24 months after the burn. Results indicated that fire-induced increases in the nutrient availability can be short-lived in high-mountain habitats, but steadier and likely more persistent nutrient inputs can derive from the gradual breakdown of charred organic matter. © 2021 Elsevier B.V.
000129341 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000129341 590__ $$a7.422$$b2021
000129341 591__ $$aSOIL SCIENCE$$b4 / 39 = 0.103$$c2021$$dQ1$$eT1
000129341 592__ $$a1.875$$b2021
000129341 593__ $$aSoil Science$$c2021$$dQ1
000129341 594__ $$a11.1$$b2021
000129341 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000129341 700__ $$aGirona–García, A.
000129341 700__ $$0(orcid)0000-0003-0630-1181$$aMartí Dalmau, Clara$$uUniversidad de Zaragoza
000129341 700__ $$0(orcid)0000-0003-3516-5756$$aOrtiz Perpiñá, Josep Oriol$$uUniversidad de Zaragoza
000129341 700__ $$aArmas–Herrera, C.M.
000129341 700__ $$0(orcid)0000-0002-1006-5030$$aBadía Villas, David$$uUniversidad de Zaragoza
000129341 7102_ $$15011$$2705$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Producción Vegetal
000129341 7102_ $$15011$$2240$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Edafología y Quím.Agríco.
000129341 773__ $$g402 (2021), 115169 [13 pp.]$$pGeoderma$$tGeoderma$$x0016-7061
000129341 8564_ $$s2845542$$uhttps://zaguan.unizar.es/record/129341/files/texto_completo.pdf$$yPostprint
000129341 8564_ $$s1425167$$uhttps://zaguan.unizar.es/record/129341/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000129341 909CO $$ooai:zaguan.unizar.es:129341$$particulos$$pdriver
000129341 951__ $$a2024-01-09-13:34:00
000129341 980__ $$aARTICLE