Afforestation experiments reflecting the treeline conditions in Southwest Greenland

Abstract

Scrub of Betula pubescens, Alnus crispa, and particularly Sorbus groenlandica indicate potential conifer-treeline conditions in SW Greenland. Experimental treeplanting elucidates the phytogeographical position of the region, especially when using plant material of well known origin. The history of early introductions and experiments leading to afforestation-attempts 1953ff is surveyed. Pinus sylvestris, Larix sibirica, Picea glauca, and Picea glauca x sitchensis have grown to 4-6 m at interior fiords between 6O°N and 61°N. Recent introductions of high latitude and high altitude origins of Picea glauca, Abies lasiocarpa, and Pinus contorta from Alaska and Yukon have resulted in obviously better adaptable plant material.