Alaska2015Sep

Carbon cycling in a black spruce stands was estimated in Caribou-Poker Creek Watershed, Interior Alaska. Carbon dymanics monitoring sites were settled along the northeast-facing slope. In 2015 September, we surveyed tree census and permafrost table detection along the true north-facing slope. One site was located on upper position of the north-facing slope, the other at the lower position. Totally 160 individual trees were measured. The depth of permafrost table were estimated by penetrationg test at three points in each census plot. The permafrost depth at upper site were 47cm, 66cm, and 68cm. At the lower site, the depth were 39cm, 28cm, and 38cm.