Effect of fire on herbaceous "matorral" vegetation of Central Chile

摘要: This research aimed to determine the diversity and biomass of species in burned Jardin Botanico Nacional Vina del Mar (JBN), region Valparaiso, Chile (Lat. S 33 ° 02' Long. 71 35' O) from April December 2012. Three sites were selected that located on slopes with same exposure: 1) site by fire 2012, 2) 2003, 3) control corresponding an area without previous fires. Both shrub herbaceous studied. The cover shrubs, geophytes therophytes was determined as well aboveground belowground geophytes, special attention paid Oziroe arida . When O. present, diameter its bulbs All information processed SAS software ANOVA - analysis 2 WAYS classification., extensive geophyte coverage exists 2012 is due increased post-fire regeneration this life-form. greater areas, especially during first year after (2012 site). On there a higher percentage therophyte coverage; no relationship found between woody plants. It for each additional millimeter diameter, increase age 2.99 years (R =0.78); is, bulb will be indicator bulbs. study represents country perform quantitative behavior fires (aboveground biomass), it concluded action favors through generation further overhead underground biomass, which created conditions reproduction. La investigacion tuvo por objetivo determinar la diversidad y biomasa de especies existentes en sitios incendiados distintos anos, el Mar, Region 33° 02´ 71°35´ abril diciembre Se seleccionaron tres sitios, areas ubicadas laderas con misma exposicion: Sitio quemado un incendio 2012; 2003; control, correspondiente sin ocurrencia incendios anteriores. estudiaron tanto las arbustivas como herbaceas. cobertura arbustos, geofitas terofitas se determino asi aerea subterranea geofitas, especial atencion , que, estudio diametro sus bulbos. Toda informacion fue procesada traves programa computacional SAS, analisis VIAS clasificacion. En sitio encontro mayor porcentaje que basa aumento regeneracion post-incendio esta forma vida. los quemados, especialmente durante recuperacion primer ano despues fuego (sitio 2012). ocurrio terofitas; explica funcion lenosas. estimo cada mm bulbos significa 2,99 anos edad planta =0,78), considerando indicador El representa primero pais realiza cuantitativo comportamiento (biomasa subterranea), concluyendo accion favoreceria generacion una subterranea, generando condiciones para reproduccion.