Tham khảo tài liệu 'biomass and remote sensing of biomass part 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 7 The Above-Ground Biomass Production and Distribution in White Willow Community During 11 Years of Primary Succession Petr Madera Diana Lopez and Martin Senfeldr Department of Forest Botany Dendrology and Geobiocoenology Faculty of Forestry and Wood Technology Mendel University in Brno Czech Republic 1. Introduction In 1996 the water level in the studied area the central lake of the Nove Mlyny Reservoir was reduced by 85 cm. The reason was the implementation of a project with the aim to remedy the negative effect of the reservoir on the biological function of the river corridor. Within the project two islands across the reservoir were to be constructed. After the water level was reduced seedlings of White Willow appeared immediately on the uncovered sediments. The area of the Nove Mlyny Reservoir thus became a unique natural laboratory of the succession of soft floodplain forest in several dozens of hectares Bucek et al. 2004 . The initial stages of the White Willow community originating from the primary succession Bergmann 1999 Matic et al. 1999 prove to be highly productive ecosystems. The aim of research was to monitor the development of the successive community not only regarding the number and growth of individuals but also other production indicators such as the biomass of stems branches and leaves the LAI or the stem volume in order to create a natural model of community succession. A natural succession model can both bring some light into the principles of community growth and be a suitable source of knowledge concerning the cultivation of fast-growing woody plants on energetic plantations. 2. Material and methods Study area The permanent research plot was established in 2005 in Vlckuv ostrov Island the construction of which was finished in 2001. The middle Nove Mlyny reservoir is located approximately 40 km to the south of Brno the Czech Republic 16O 37 E and 48 O 55 N at an altitude of 170 m . In the stand aged 5 at the time a rectangular area .
