ResumenEn las últimas décadas los incendios forestales producidos en la Selva central de Perú se han incrementado, causando efectos en la vegetación. A través del tiempo estás áreas afectadas por el fuego se han ido regenerando. Sin embargo, informaciones de la riqueza y composición florística son escasas en esta región. En el presente estudio evaluamos la flora leñosa en áreas afectadas por el fuego en tres edades aproximadas de bosque (5, 10 y 25 años). Instalamos 9 transectos de 2 × 500 m (0.1 ha); donde registramos todos los individuos con DAP (medido a 1.3 m del suelo) ≥ 2,5 cm. Los resultados muestran que los bosques de 5, 15 y 25 años presentan a las siguientes familias más abundantes: Asteraceae y Euphorbiaceae; Fabaceae y Asteraceae; y Malpighiaceae y Piperaceae respectivamente; las especies más abundantes fueron: Vernonanthura patens (Kunth) H.Rob, Acalypha sp., y Celtis pubescens Spreng.; Machaerium inundatum (Mart. ex Benth.) Ducke, Dendrophorbium sp. y Trema micrantha (L.) Blume; y Heteropterys laurifolia (L.) A. Juss., Piper aduncum L. y Allophylus floribundus (Poepp.) Radlk. respectivamente. Asimismo, los resultados muestran que los bosques de 5, 15 y 25 años poseen 36, 95 y 220 individuos; 6, 12 y 36 especies; 6, 11 y 34 géneros; 4, 10 y 23 familias. Palabras clave: incendios forestales, riqueza, composición, bosque secundario, transectosLa flora leñosa establecida luego de las quemas en el valle de Chanchamayo -Selva central del Perú
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19Smouldering ground fires have severe environmental implications. Their main effects are the release of 20 large amounts of carbon to the atmosphere with loses of organic soil and its biota. Quantitative data on 21 the behaviour of smouldering wildfires are very scarce and are needed to understand its ecological effects, 22 to validate fuel consumption and smouldering propagation models and to develop danger-rating systems. 23 We present, for the first time, a methodology for conducting smouldering experiments in field conditions. 24This method provides key data to investigate smouldering combustion dynamics, acquire fire behaviour 25 metrics and obtain indicators for ecological effects of smouldering fires. It is to be applied in all types of 26 undisturbed soils. The experimental protocol is based on a non-electric ignition source and the monitoring 27 system relies on combining both point and surface specific temperature measurements. The methodology 28 has been developed and applied by means of large series of replicate experiments in highly organic soils 29 at the forest-grassland treeline of the Peruvian Andes. The soil tested exhibited weak ignition conditions. 30However, transition to oxidation phase was observed, with smouldering combustion during 9 h at 15-cm 31 depth and residence times at temperatures above dehydration of ~22 h. We present a method for conducting smouldering experiments in field conditions by which data on fire 35 behaviour and ecological effects of ground fires are obtained at real scale. The methodology is tested at 36 the forest-grassland treeline of the Peruvian Andes. We observe smouldering during 9 h at 15-cm depth. 37 Introduction 38Peatlands are a key component of the global carbon pool. They cover only 2-3% of the 39 global terrestrial surface but store over 25% of the world's soil carbon (Yu 2012)
This research focuses on the evaluation of the economic value that can be achieved by the use of decision threshold values for the Canadian Fire Weather Index for the projection of different specific wildfire events, as a basis for wildfire prevention activities. The study was done in two testing areas in Spain, corresponding to La Coruña and Alicante provinces. The applied methodology makes use of a simple binary decision model, which has been widely applied for the verification of quantitative meteorological forecasts. Meteorological and wildfire data from a 10-year period (1997–2006) were used. The results show that use of the Fire Weather Index results in potential economic savings, especially in the case of La Coruña. Therefore, the use of the Canadian Fire Weather Index as a basis to develop an early warning system for wildfire is recommended in the two provinces under study.
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