Effect of biomorphological traits of the crown of fir on the pattern of increment of ring width and volume of large timber
1989
Jaworski, A. | Podlaski, R. (Akademia Rolnicza, Krakow (Poland). Katedra Hodowli Lasu)
The studies were conducted in 18 fir stands in Karpaty and Sudety Mountains. Two sample trees were chosen from each stand. They represented trees were of highest and lowest vitality rate. The trees were cut, the stems and crowns measured, and sample ring sections cut out at the height 0,0 m, 0,5 m 1,0 m, 1,3 m, 2,0 and 4,0 m. Basing on the number and widths of annual rings in the chosen sample sections a full stem analysis was made. The increment patterns were determined for radial widths of annual rings, and height and volume of large timber without bark in 10-year periods. The 10-year increment measurements were used for calculating increment indices. Also biometrical traits of crowns of those trees which ensured normal increment were determined. The traits were the following relative length of a crown equalled 42 percent, vitality, and type of a crown
显示更多 [+] 显示较少 [-]