Análisis de la iiversidad arbórea en áreasrestaradas post-incendio en el parquue ecológicochipinque, México.

La presente investigacion evaluo la diversidad del componente arboreo en areas con y sin restauracion ecologica, tras ser impactadas por un incendio forestal en el Parque Ecologico Chipinque (PECh), en el noreste de Mexico. Para ello se estudiaron dos expo-siciones (noreste y noroeste) de la Sierra Madre Oriental, en cada exposicion se evaluaron dos areas, una donde no se llevaron acabo practicas de restauracion ecologica (testigo) y otra donde se llevaron a cabo dichas practicas y, en cada una de ellas se delimitaron cuatro sitios de muestreo (16 sitios en total). Los sitios fueron de 10 m x 10 m en un ecosistema mixto pino-encino, con un rango de altura de 1.000 a 1.150 msnm. Se evaluaron todas las especies arboreas con un diametro ≥1,5 cm y se obtu-vieron los parametros dasometricos de altura (h) y diametro (d0,10). Se estimo la diver-sidad Αmediante los indices de Shannon (H’) y Margalef (Da) y se realizo un analisis de Bray-Curtis para determinar la diversidad Βde acuerdo a la similitud-disimilitud. Para evaluar la distribucion vertical de las especies se estimo el indice de Pretzsch. La familia Fagaceae fue el grupo predominante en las dos areas. De acuerdo a los analisis de diversidad realizados las areas restauradas presentaron una disminucion en la riqueza y diversidad. La especie con mayor peso ecologico en ambas exposiciones y areas fue Quercus rysophylla; mientras que Pinus pseudostrobus fue la segunda especie de mayor peso ecologico en las areas restauradas, debido a las acciones de revegetacion.(AU) This research assessed the diversity of the arboreal component of areas, with and without ecological restoration, after being impacted by a wildfire in the Ecological Park Chipinque (PECh), in Northeastern Mexico. Two areas were analyzed, one facing Northeast and the other Northwest in the Sierra Madre Oriental, in each facing were assessed two areas, one of them where there were not practices of ecological restoration (control) and other one in which these practices were carried out. Within each area, four sites were selected. Plots were 10 m x 10 m, in a mixed ecosystem pine-oak, ranging in height from 1000 to 1150 m above sea level; all trees with a diameter equal to 0.10 m ≥1.5 cm were assessed, and were obtained parameters of height (h) and diameter (d0.10). The diversity Αwas estimated using the Shannon index (H’) and Margalef (Da) and an analysis of Bray-Curtis was used to determine the diversity Βaccording to the similarity-dissimilarity between the ecosystems of both exposures. To evaluate the vertical distribution of species Pretzsch index was estimated, and species were distributed in different zones of altitude. The family Fagaceae was the predominant group in both areas. According to the analysis of diversity, sampled areas showed a decrease on richness and diversity. The species with the highest ecological weight in both aspects (NE and NO) and in both treatments (with and without restoration) was Quercus rysophylla; while Pinus pseudostrobus was the second specie in the restored areas due to the re-vegetation practices.(AU)