Introduction
Aspen is a deciduous tree species, famous for being a natural habitat for wildlife, and is major source of wood due to its dynamic understory and main constituent of boreal forests of North America (Rowe 1972). Prairie provinces of western Canada are more exposed to aspen and white spruce plantation, however, aspen growth is influenced by different climatic factors like soil temperature (Peng and Dang 2003), moisture (Hogg 1994; Chen et al.1998, 2002), light (Hemming and Lindroth 1999) and drought Chen et al (2002). North America got more exposed to disturbance during last few decades which led to wide dispersal of aspen in different western sites. Moreover, European reimbursement has changed the aspen reproduction period that has resulted in the removal and decline in many areas.This recommend the movement of aspen species outside their native range, which is essential for conservation. Active mass movement of large diversity of species to minimize loss of biodiversity under changing climate is a serious concern (Hunter 2007). It is necessary to recognize stress dynamics influencing vulnerability of aspen in specified range and suitable environment to enhance aspen propagation for successful reforestation in western North America. Different methods to classify the aspen in landscapes are reported but there is little study on comprehensive protocol to assess the vulnerability and genetics of aspen in climate change.
Objectives
Objectives
- To recognize climate factors influences aspen vulnerability in specified region
- Selection of resistant aspen provenances for future reforestation in western North America
- Recognition of suitable environment for aspen regeneration