Growth and development of lodgepole pine and scoth pine provenances in mixed plantings in South Karelia

Survival, stability and growth pattern of lodgepole pine and Scotch pine provenances in mixed stand experiment has been investigated over 20 year period. It has been revealed that Pinus contorta ssp. latifolia as an exotic proved not only to be able to adapt successfully to soil and climate conditions of South Karelia but is in process of naturalization considering the growth of its karelian provenances. Considering the stem volume growth of exotic versus indigenous pine within the scope of 20 year period since planting the superiority of lodgepole pine has been assessed as equal to 37,1% if calculated using maximum mean annual increment values.