Rehabilitation of Nothofagus pumilio forests in Chilean Patagonia: can fencing and planting season effectively protect against exotic European hare browsing?     

Huertas Herrera  Alejandro  Promis  Álvaro  Toro-Manríquez  Mónica  Lencinas  María Vanessa  Martínez Pastur  Guillermo  Río  Matías 《New Forests》2022,53(3):469-485

New Forests - In forests affected by heavy fires and continuous grazing of exotic herbivorous mammal species, Nothofagus pumilio (lenga) cannot recover naturally. The main factors that hinder the...  相似文献   

The effects of a regeneration felling on photosynthetic photon flux density and regeneration growth in a <Emphasis Type="Italic">Nothofagus pumilio</Emphasis> forest     

Juan Caldentey  Helmut Mayer  Manuel Ibarra  Alvaro Promis 《European Journal of Forest Research》2009,128(1):75-84

Photosynthetic photon flux density (PPFD) during the growing season and regeneration growth (height and base stem diameter) were investigated in two natural stands in the Patagonian region of Chile, one without silvicultural management and another with a regenerative felling under a shelterwood system. PPFD was measured by means of fifteen sensors (quantum Li-190SA) installed in each stand and distributed within three canopy openness grades. Four regeneration plots (1 m²) were established around each sensor. In each of the plots, the height and base diameter of ten labelled plants within the upper regeneration layer were measured in the growing seasons 2001–2002 and 2002–2003. In the stand with regeneration felling total PPFD in the growing season was 2.5–2.9 times higher than in the stand without intervention. In both stands, total PPFD in the growing season increased by about 420 mmol/m² when the relative canopy, which was in the range between 30 and 70%, was reduced by 10%. An identical behaviour was observed for the height and base stem diameter increases reflecting a clear effect of intervention and canopy coverage on the magnitude of PPFD received by the regeneration and its development.  相似文献