Effects of coupled straw-biochar mulch on pyrogenic carbon and C-stocks in burned soils of southern Iberian Peninsula
Comunicación oral presentada en e8th International conference on fire effects on soil properties., Brasil 26-28 julio(2021)
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2021-07-26
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| Materias: | Thermogravimetry, Carbon, Severe wildfires, Mediterranean climate, |
| Acceso en línea: | http://hdl.handle.net/10261/277885 |
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dig-irnas-es-10261-2778852022-08-30T10:29:52Z Effects of coupled straw-biochar mulch on pyrogenic carbon and C-stocks in burned soils of southern Iberian Peninsula Prats, Sergio Verheijen, F. G. A Merino, Agustín Valencia, Francisco Knicker, Heike González-Pérez, José Antonio Rosa Arranz, José M. de la Thermogravimetry Carbon Severe wildfires Mediterranean climate Comunicación oral presentada en e8th International conference on fire effects on soil properties., Brasil 26-28 julio(2021) Due to the hot and dry climatic conditions, wildfires and land management are major environmental disturbances in the Iberian Peninsula. High severity wildfires destroy soil organic matter, causing a drastic alteration of carbon (C) cycling, and are followed by strong runoff and erosion events. Post-fire straw mulch has been used to mitigate soil erosion, however, no studies have assessed the effects of the combined application of straw, as tool to avoid soil erosion, with biochar (pyrolised biomass) for restoration of the soil C lost to the atmosphere. In september 2017, a total of 40 microplots (1 m2) were installed in two areas of southern Portugal and Spain where wildfires burnt at high and moderate severity (sandy and loamy soils), respectively. Soil and sediment samples were collected to assess soil erosion and C stocks via TG-DSC, NMR and analytical pyrolisis. Treatments were: Burned (controls), Brushed (ash and stones removed), Straw mulch (at a rate of 1 Mg ha-1), Straw+Biochar (1+15 Mg ha-1 ), Pine slash and Marine algae (both at 8 Mg ha-1 Preliminary results during the first post-fire year show that Straw and Straw+Biochar mulch strongly reduced soil erosion by 67-60% compared to the Burned or Brushed plots. The latter two did not differ from each other. Soil erosion in the Pine slash and Marine algae treatments was 30-40% lower than in the Burned plots. These findings indicate that applying both Straw together with Biochar can be an effective way to increase not only the labile soil organic matter fraction (derived from mulch itself) and to retain more recalcitrant native soil organic matter fractions (derived from the lack of erosion,) but also to increase recalcitrant organic matter by the input of biochar. Future post-fire soil restoration programs may decide to use straw mulch, when aiming to mitigate post-fire soil erosion. Equally they may combine straw and biochar application, if besides of mitigating soil erosion, it is intended to restore the soil carbon stocks, lost to the atmosphere and thus to improve soil quality in moderate and high severity burned areas. Peer reviewed 2022-08-29T12:10:20Z 2022-08-29T12:10:20Z 2021-07-26 2022-08-29T12:10:20Z comunicación de congreso Effects of coupled straw-biochar mulch on pyrogenic carbon and C-stocks in burned soils of southern Iberian Peninsula . 8th International conference on fire effects on soil properties. Abstract de la Comunicación oral (2021) http://hdl.handle.net/10261/277885 Sí none |
| institution |
IRNAS ES |
| collection |
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| country |
España |
| countrycode |
ES |
| component |
Bibliográfico |
| access |
En linea |
| databasecode |
dig-irnas-es |
| tag |
biblioteca |
| region |
Europa del Sur |
| libraryname |
Biblioteca del IRNAS España |
| topic |
Thermogravimetry Carbon Severe wildfires Mediterranean climate Thermogravimetry Carbon Severe wildfires Mediterranean climate |
| spellingShingle |
Thermogravimetry Carbon Severe wildfires Mediterranean climate Thermogravimetry Carbon Severe wildfires Mediterranean climate Prats, Sergio Verheijen, F. G. A Merino, Agustín Valencia, Francisco Knicker, Heike González-Pérez, José Antonio Rosa Arranz, José M. de la Effects of coupled straw-biochar mulch on pyrogenic carbon and C-stocks in burned soils of southern Iberian Peninsula |
| description |
Comunicación oral presentada en e8th International conference on fire effects on soil properties., Brasil 26-28 julio(2021) |
| format |
comunicación de congreso |
| topic_facet |
Thermogravimetry Carbon Severe wildfires Mediterranean climate |
| author |
Prats, Sergio Verheijen, F. G. A Merino, Agustín Valencia, Francisco Knicker, Heike González-Pérez, José Antonio Rosa Arranz, José M. de la |
| author_facet |
Prats, Sergio Verheijen, F. G. A Merino, Agustín Valencia, Francisco Knicker, Heike González-Pérez, José Antonio Rosa Arranz, José M. de la |
| author_sort |
Prats, Sergio |
| title |
Effects of coupled straw-biochar mulch on pyrogenic carbon and C-stocks in burned soils of southern Iberian Peninsula |
| title_short |
Effects of coupled straw-biochar mulch on pyrogenic carbon and C-stocks in burned soils of southern Iberian Peninsula |
| title_full |
Effects of coupled straw-biochar mulch on pyrogenic carbon and C-stocks in burned soils of southern Iberian Peninsula |
| title_fullStr |
Effects of coupled straw-biochar mulch on pyrogenic carbon and C-stocks in burned soils of southern Iberian Peninsula |
| title_full_unstemmed |
Effects of coupled straw-biochar mulch on pyrogenic carbon and C-stocks in burned soils of southern Iberian Peninsula |
| title_sort |
effects of coupled straw-biochar mulch on pyrogenic carbon and c-stocks in burned soils of southern iberian peninsula |
| publishDate |
2021-07-26 |
| url |
http://hdl.handle.net/10261/277885 |
| work_keys_str_mv |
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