CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS
|
|
CENTRE ON THE PROBLEMS OF ECOLOGY AND PRODUCTIVITY OF FORESTS |
RUSSIAN ACADEMY OF SCIENCES |
|
V. I. Ponomarev, А. V. Il'inykh, S. L. Sokolov Criteria for Expediency оf Protecting the Birch Stands Against Phyllophagous Insects in Transural Region // Forest Science (Lesovedenie).2011. № 2. P.13-18. Based оn the data of lоng-tеrm investigations and resu1ts of the authors, the criteria for the expediency of forest protective measures against phyllophagous insects in birch stands of the Transural region and Western Siberia are suggested to reconsider and abandon overall treatments. Тhе main attention should bе paid to stands intolerant to defoliation and those adjacent to settlements irrеlаtivе of the degree of their tolerance. For this purpose, the construction of maps showing the resistance of stands to zoogenic defoliation is necessary; they could bе the base for the decision to conduct protective measures or abandon theт. These maps will репnit to preserve forest biocenoses and rationally use the funds allocated for their protection. Birch stands, leaf-eating insects, tolerance to defoliation.. |
webmaster |