STANKOVA, T., H. STANKOV, M. SHIBUYA. 2006. MEAN-DOMINANT HEIGHT RELATIONSHIPS
FOR SCOTCH PINE AND AUSTRIAN BLACK PINE PLANTATIONS IN BULGARIA. ECOLOGICAL
ENGINEERING AND ENVIRONMENTAL PROTECTION 2: 59-66. (IN ENGLISH).
Mean-dominant height relationships for Scotch pine and Austrian black
pine plantations in Bulgaria
Tatiana V. Stankova, Hristo D. Stankov and M. Shibuya
Връзка между средната и доминиращата височина на бялборови и
черенборови култури в България
Татяна В. Станкова, Христо Д. Станков и М. Шибуя
Summary
Fourteen probable functions to express the mean-dominant height relationship for Scotch pine (Pinus
sylvestris L.) and for Austrian black pine (P. nigra Arn.) plantations were compared using representative data
sets and a system of statistical tests. The linear model was found to be the most adequate for both species and the
functions: Hdom=0.996Hm+1.455 and Hdom=0.991Hm+1.256 were proven for Scotch pine and Austrian black
pine plantations, respectively. The values of intercepts and slopes of the lines showed that the height structure of
the Austrian black pine plantations is more homogenous than that of the Scotch pine plantations. The derived
relationships are applicable for estimation of dominant height through the mean height in the range from 3.2 to
26.5m for the Scotch pine plantations and from 3.4 to 27.7m for Austrian black pine plantations.
key words: Scotch pine, Austrian black pine, mean height, dominant height, regression models, plantations