Differences in stem taper of black alder (Alnus glutinosa subsp. barbata) by origin

Poudel K. P., ÖZÇELİK R., YAVUZ H.

Canadian Journal of Forest Research, vol.50, no.6, pp.581-588, 2020 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 50 Issue: 6
  • Publication Date: 2020
  • Doi Number: 10.1139/cjfr-2019-0314
  • Journal Name: Canadian Journal of Forest Research
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Agricultural & Environmental Science Database, Artic & Antarctic Regions, BIOSIS, CAB Abstracts, Compendex, Environment Index, Geobase, Greenfile, Pollution Abstracts, Veterinary Science Database
  • Page Numbers: pp.581-588
  • Keywords: Black alder, Stand origin, Stem volume, Taper, Turkey
  • Isparta University of Applied Sciences Affiliated: Yes

Abstract

Black alder (Alnus glutinosa subsp. barbata (C.A. Mey.) Yalt.) is an important tree species in Turkey both economically and ecologically. Accurate taper and volume equations are required by most inventory systems to estimate upper stem diameter, form, and tree volume. Stem analysis data were used to examine the differences in taper and volume of black alder trees grown in naturally regenerated, plantation, and coppice stands. Statistically significant differences were observed in taper and volume of black alder trees grown in stands from these three origins. Error in total stem volume inside bark was the greatest when the taper model was fitted to plantation data and applied to seed data compared with the model fitted to coppice data and applied to seed data. Therefore, to accurately predict upper stem diameter and total or merchantable stem volume, in addition to selecting species-specific taper models, forest managers should consider the origin of the model-fitting data when choosing an appropriate taper model for their stands.