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Báo cáo lâm nghiệp: "Verification of the food supply to game under conditions of the floodplain forest ecosystem"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: Verification of the food supply to game under conditions of the floodplain forest ecosystem. | JOURNAL OF FOREST SCIENCE 55 2009 2 81-88 Verification of the food supply to game under conditions of the floodplain forest ecosystem J. Feuereisel1 M. Ernst 2 Faculty of Forestry and Wood Sciences Czech University of Life Sciences in Prague Prague Czech Republic 2Faculty of Forestry and Wood Technology Mendel University of Agriculture and Forestry in Brno Brno Czech Republic ABSTRACT In order to determine the environment carrying capacity in terms of biomass production utilizable by game 360 representative sample plots 1 X 1 m were laid out in the growing season on the basis of typological classification in forest stand of an area of 1 796.49 ha in the studied region of the Soutok Game Preserve Zidlochovice Forest Enterprise Lanzhot Forest District. On meadows pastures and others areas producing grass and herbs of a total area of 532.87 ha other 57 sample plots were laid out and sample of biomass utilizable by game. Quantification of the biomass was carried out on the basis of the area cover of grass and woody undergrowth. In total forest and non-forest land provides 14 659 851 kg grass and herb utilizable biomass. In forest stands production was found of 6 826 662 kg grass and herb biomass on average 380 g m2 and on meadows and pastures 7 833 189 kg on average 1 470 g m2 . Moreover production of 1 401 262 kg on average 78 g m2 . Laboratory analyses were carried out of naturally dried-up samples of biomass and these values available energy were ascertained the energy of grass and herb biomass amounted to 5.7 MJ kg the utilizable energy of wooody origin amounted to 4.03 MJ kg. In view of the standardized game population size up the available food supply sufficient because the energy requirement was fully covered by their daily quantitative consumption of biomass. Keywords game management carrying capacity biomass production energy need Game is an inseparable part of forest ecosystems. The balance between producers and consumers in particular ecosystems has .