tailieunhanh - Báo cáo lâm nghiệp: "Historical development of floodplain forests in the Upper Moravian Vale (Vrapač National Nature Reserve, Czech Republic)"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: Historical development of floodplain forests in the Upper Moravian Vale (Vrapač National Nature Reserve, Czech Republic). | JOURNAL OF FOREST SCIENCE 54 2008 9 426-437 Historical development of floodplain forests in the Upper Moravian Vale Vrapac National Nature Reserve Czech Republic I. Machar Department of Biology Faculty of Education Palacký University in Olomouc Czech Republic ABSTRACT The paper deals with historical development of floodplain forests in the area of Vrapac National Nature Reserve in the floodplain of the Morava River Protected Landscape Area Litovelské Pomoraví Czech Republic . The aim of this paper is to contribute to a better understanding of the anthropogenic influences that have over centuries led to the present state of floodplain forests in the study area. Thus it will be possible to define more efficiently the management plan of this floodplain forest ecosystem. Keywords floodplain forest historical development of forests coppice-with-standards national nature reserve forest management The floodplain forests of Central Europe represent a specific forest geobiocoenoses the species diversity of which is closely connected with the ecotope consisting of Quaternary river floodplain regular or irregular flooding and a high level of subterranean water in the first half of the vegetation period Mezera 1958 Vasicek Prax 1983 Penka et al. 1985 1991 . The main characteristics and functions of floodplain forests in Europe are in particular high production of biomass high level of biodiversity protection of rivers against erosion and pollution high number of natural preserves both recreational and aesthetic functions of the landscape significant source of water vapours in the landscape and retention space in the case of floods Klimo Hager 2001 . The floodplain forests within Europe are ranked Gutzweiler et al. 1990 as endangered biotopes. For example as a result of changes related to water management on the upper Rhine between the years 1955 and 1957 only 1 of the area with near natural communities was preserved in the river floodplain. The degree of ecological stability .