En avståndsberoende tillväxtmodell på trädnivå för gran : en preliminär modell baserad på två skiktade bestånd i Götaland

• The report describes parameterization and testing of a single tree growth model for simulation purposes of uneven-sized Norway spruce stands. The model includes local competition in terms of distance and size of competing trees larger than 6 cm dbh. Response variable is annual basal area growth. Parameter values are based on 101 sample trees from two uneven-sized Spruce dominated stands located in Värnamo and Östra Göinge municipalities, Sweden. The model was tested by first reconstructing stand development five years, based on growth data from sample trees. Coefficient of determination for the complete model was 0,67, compared to 0,55 for the basic model without local competition. Residual analyses revealed no visible trends.

Ämnesord

LANTBRUKSVETENSKAPER  -- Lantbruksvetenskap, skogsbruk och fiske -- Skogsvetenskap (hsv//swe)

AGRICULTURAL SCIENCES  -- Agriculture, Forestry and Fisheries -- Forest Science (hsv//eng)

Nyckelord

tillväxtmodell

Picea abies

kontinuitetsskogsbruk

avståndsberoende

enskilda träd

Forestry and Wood Technology

Skog och träteknik

Publikations- och innehållstyp

vet (ämneskategori)

rap (ämneskategori)