2024-03-29T13:28:26Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/826032019-06-25T10:48:57Zcom_10261_15com_10261_6col_10261_268
2013-09-24T08:26:03Z
urn:hdl:10261/82603
Wildfires influence on soil organic matter in an Atlantic mountainous region (NW of Spain)
Santín Nuno, C.
Knicker, Heike
Fernández Menéndez, S. del C.
Menéndez Duarte, R. A.
Álvarez García, M. A.
Fundación para el Fomento en Asturias de la Investigación Científica Aplicada y la Tecnología
Wildfires
Atlantic mountainous region
Soil organic matter
13C NMR
10 páginas, 5 figuras, 3 tablas, 53 referencias.-- cmartin@irnase.csic.es
The principal aim of this research was to determine the influence of wildfires on soil organic matter (SOM) content and composition in soils located on the northern slope of the Cantabrian Cordillera, an Atlantic mountainous region in the North West of Spain, where wildfires are frequent. Samples from soils with similar aspect, slope, elevation and vegetation characteristics, but with different wildfires histories were collected. Total organic carbon and total nitrogen contents were determined as well as the C/N ratio. Furthermore, a qualitative characterization of the soil organic carbon (SOC) was carried out by 13C variable amplitude cross polarization magic angle spinning (VACP/MAS) Nuclear Magnetic Resonance (NMR) spectroscopy. Our results show that, on the one hand, all the sampled soils can be considered important pools of carbon in this Atlantic mountainous region, especially in the heath areas. On the other hand, the fire-affected soils present higher SOM contents than their unburnt counterparts. This could be attributed to an important reaccumulation of fresh vegetal material, which is probably a consequence of the decrease of SOM decomposition rates after fire. Moreover, charred organic compounds are not found in all the burnt soils, which could be due to the long time since the last fires events took place, to different fire severities, or to different post-fire erosion processes in the studied soils.
2013-09-24T08:26:03Z
2013-09-24T08:26:03Z
2008-08
artículo
Catena 74 (3): 286-295 (2008)
0341-8162
http://hdl.handle.net/10261/82603
10.1016/j.catena.2008.01.001
http://dx.doi.org/10.13039/501100008430
eng
http://dx.doi.org/10.1016/j.catena.2008.01.001
closedAccess
Elsevier