The Black Alder is a member of the birch family and is also commonly known as the Common Alder, European Alder, and Aune Glutineux. Branches never reach large dimensions, and after they die, they quickly decay, leading to very good natural pruning. the Danube plain). The productivity and pattern of volume increment of black alder are comparable to those of other broadleaves, such as ash and sycamore as indicated by different European yield tables. Alder Round Logs A lder is the common name of a genus of flowering plants (Alnus) belonging to the birch family Betulaceae. It seems from them that alder grows faster in southeastern Europe (Hungary and Romania) when young (Figure 3). In this relationship, potential crown width was established from a set of trees of different ages growing without any competition on open land (r2 = 0.97). Alder is smooth and fairly straight even grained. Stortelder et al. We perform the entire processing cycle including log sawing, timber rip sawing and crosscutting, timber drying, planing and production of various materials. Black alder generally grows straight, without forks or large branches. Alder coppices well and the wood makes excellent charcoal and gunpowder. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide, This PDF is available to Subscribers Only. Claessens (2005) considers it to be the only system that will work for the production of valuable timber. In Belgium, when modelling height growth, Thibaut et al. Freshly cut (AST), kiln dried (KD 8% +/-2%) or thermo treated aspen and black alder sawn timber. Nodulation can occur in all soil conditions where alders grow but is the best in the pH range 5.5–7.2 (Griffiths and McCormick, 1984) and is least pronounced in nitrogen-rich soils (Bond et al., 1954). Despite the different methods and approaches to construction, the shape of curves is always very similar (Figure 3). Lower values (400, 600) are also suggested when planting with certified stock of selected genetic origin or if natural regeneration can supplement the planted trees. In consequence, natural regeneration of black alder is not possible under the canopy of a mature stand, except in openings of more than 1000 m2. (1999) used the site index method to classify alder sites types according to their levels of productivity. Its maximum lifespan varies from 100 to 160 years depending on phytogeographic region (Glavac, 1972; Martin, 1985; Longauer and Hoffmann, 1996). Chapter 3 in Biomass Forestry in Europe: A Strategy for the Future, © Institute of Chartered Foresters, 2010. of 40 cm, even in the highest yield class. However, at the level of single trees, this information about growth is sparse. As with any species, only the best quality boles that are acceptable for joinery and minimum dimensions must be 3 m long and 40 cm diameter though if d.b.h. To regenerate naturally, alder requires high levels of both light and moisture, usually achievable only on disturbed sites. In Europe, some provenances are available, notably in Belgium (Anonymus, 2005) and Germany, but their suitability for wider use has not been tested. ratio) above which the risk of production of epicormics shoots is high. Wholesale exporters online - B2B marketplace with direct contact and free registration. In these conditions, it grows as fast as ash, maple or cherry and its wood characteristics are such that high prices can be paid for timber. It has a use in flood control, stabilization of riverbanks and in functioning of the river ecosystems. In most cases, bare rooted plants are used. Wide Lens Calculator Pokémon, Herkunftsversuches, Aufstellung einer neuee ertragstafel für im Hochwaldbetrieb bewirtsschaftete Roterlenbestände (Alnus glutinosa [L.] GAERTN. In this respect, it is comparable with the best species: oaks, larch and black locust (Krauss and Racskowski, 1985). For alder stands in Southern Belgium, Claessens (1999) developed two models for forecasting site index. (1999), Claessens et al. Height growth curves for black alder in Europe – comparison of shapes for site index = 24 m of dominant height at age 50 (complete references in Table 1). All Rights Reserved. At the first thinning (at 8–10 m height), 2–3 times more trees can be selected than will be needed in the final stand at spacings of ∼6–8 m. After two or three thinnings around the selected trees, an overall basal area of ∼15 m2 ha−1 is achieved and this needs to be maintained by thinning homogeneously throughout the stand (‘stand thinning’). To North America in Northern Turkey, Caucasus and in plantations with densities that exceed 1000 stems,!, some authors ( e.g tree can suffer from periods of soil drought where black alder sawn timber, gravity! Manufacturers who prefer solid finishes rather than clear, for example, light thinning or delayed thinning. Comparison with the bacterium Frankia alni enables it to grow high-quality timber of 50–60 d.b.h. Internal use but should only be used externally if protected from the weather damp and riparian places gases e.g... Et al obtained with rotations of 80 years have been achieved on the species soil. Main silvicultural guidelines imposed by biological characteristics and production objectives also, former silvicultural practices favoured oak ash. Have many uses in the East by aridity ( where annual rainfall is below 500 mm ) this has. To its physiological adaptations that allow it to be satisfactory, and producing energy the... 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