Russian Journal of Ecology, Vol. 35, No. 6, 2004, pp. 409–412. Translated from Ekologiya, No. 6, 2004, pp. 456–459. Original Russian Text Copyright © 2004 by Torlopova, Il’chukov. SHORT COMMUNICATIONS N. V. Torlopova and S. V. Il’chukov Institute of Biology, Komi Research Center, Ural Division, Russian Academy of Sciences, ul. Kommunisticheskaya 28, Syktyvkar, 167982 Russia Received October 13, 2003 Key words: forest monitoring, life state of trees, degree of disturbance of pine forests. Because of increasing atmospheric pollution by ric parameters (stand age and density), forest type, and industrial emissions, forest biogeocenoses growing in characteristics of soils. large industrial regions fail to neutralize various toxic The life state of all trees in the plot was assessed as substances and gradually decline (Kondratyuk et al., described (Manual…, 1994). The degree of needle 1980; Getko, 1989). In 1985, the UN Economic Com- depigmentation and crown defoliation and the propor- mission for Europe developed the Program of Forest tion of dead branches were estimated using binoculars Monitoring based on the examination of forests by bio- and expressed in grades (0–3): grade 0, < 10%; grade 1, indication criteria and the chemical testing of foliage, 11–25%, grade 2, 26–50%, and grade 3, 51–99%.
Russian Journal of Ecology – Springer Journals
Published: Nov 18, 2004
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