Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Cambioxylophagous fauna of young spruce stands damaged by snow in the Beskids. | JOURNAL OF FOREST SCIENCE 53 2007 9 413-423 Cambioxylophagous fauna of young spruce stands damaged by snow in the Beskids E. Kula1 R. Kajfosz1 W. Zạbecki2 1Faculty of Forestry and Wood Technology Mendel University of Agriculture and Forestry Brno Brno Czech Republic Faculty of Forestry University of Agriculture Cracow Poland ABSTRACT In 25 to 40-years-old stands damaged by snow in the Beskids the fauna of cambioxylophages was analyzed both on standing breaks and lying break-off stems. Breaks are characterized by the gradually drying phloem watered phloem and secondary fauna Hylurgops palliatus Hylocoetes dermestoides Dryocoetes sp. Monochamus sp. which does not represent any danger to spruce stands. The phloem on lying breaks withered and died till the end of the growing season. The competing species Pityogenes chalcographus L. 46-52 cover and species of the genus Dryocoetes 20 cover colonized the breaks in particular. The upper and the lower side of the lying breaks-off differ in the intensity of attack and the degree of cover of these species. In young broken and open stands with the unprocessed wood of lying breaks-off there occurs a risk of the creation of bark beetle circles in the subsequent year after the damage. Keywords Norway spruce the Beskids cambioxylophages snowbreaks young stands In winter 2005-2006 snowbreaks of disaster character occurred and in consequence salvage felling wood was processed amounting to 3 million m3 spruce pine in stands aged over 40 years in the Czech Republic. In stands up to 40 years 321 thousand m3 wood were felled spruce pine . In the basin of the Sance watersupply reservoir in the Moravian-Silesian Beskids stands of the 1st and 2nd age classes were mostly damaged. With the increasing age of stands the danger decreased Kristek et al. 2006 . Existing records on the volume of disaster salvage felling from young stands do not reflect the whole extent and rate of the disturbance of stands because a .
