Download or read book Profitability Of Growing Understocked Scots Pine And Norway Spruce Stands written by O. Salminen and published by . This book was released on 1993 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Competition in Young Stands of Norway Spruce and Scots Pine written by Urban Nilsson and published by . This book was released on 1993 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Yield Prognoses Survival and Damage in Young Stands of Norway Spruce and Scots Pine Growing in Central Sweden written by Jan Naumburg and published by . This book was released on 2001 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Growth of Genetically Improved Stands of Norway Spruce Scots Pine and Loblolly Pine written by and published by . This book was released on 2016 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Silva Fennica written by and published by . This book was released on 1996 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Folia Forestalia written by and published by . This book was released on 1993 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stand Development and Growth in Uneven aged Norway Spruce and Multi layered Scots Pine Forests in Boreal Sweden written by Martin A. Ahlström and published by . This book was released on 2016 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Volume Yield to Mid rotation in Pure and Mixed Sown Stands of Pinus Sylvestris and Picea Abies in Sweden written by Bengt Jonsson and published by . This book was released on 2001 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume yield to mid-rotation in pure and mixed sown stands of Scots pine and Norway spruce was investigated in an experiment in central Sweden. The 43-year-old stands were situated on a 7-ha site and were treated and inventoried at the time of establishment, then at intervals in the life of the stands, to give results at half-rotation age. The dynamics of the mixed stands implied a favourable ecological mixed-stand effect on the height growth of spruce in early development and before crown closure. Even at this stage, pines were taller than spruces, but height was not influenced by admixture with spruce. Pines continued to grow faster than spruces in both height and diameter, resulting in dense mixed stands with dominant pines and co-dominant or suppressed spruces. Diameter of pines was increased by weaker competition for nutrients, while weaker competition for light led to a lower height of dominant pines in mixed stands than in pure pine stands. The results indicate a slight etiolation effect of competition for light in the crown layer. Total volume yield was higher in mixed stands than the mean yield in pure stands of pine and spruce, mainly owing to the dominance of pine in mixed stands. However, it was lower in mixed stands than in pure pine stands. The growth dynamics to the present time indicates that, after a slow start, volume growth of spruce increases remarkably in pure stands and increases slightly in mixed stands. while volume growth of pine began early and is culminating.

Download or read book Predication of Regeneration Success and Wood Properties in Naturally Regenerated Stands of Scots Pine written by Dag Olsson Tegelmark and published by . This book was released on 1998 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modelling The Effects Of Regeneration Method On Growth And Economy Of Scots Pine Stands written by Renats Trubins and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Scots pine (Pinus sylvestris L.) is the most widely distributed conifer in the world and, presently, the second most important commercial tree species in Sweden after Norway spruce (Picea Abies L.). However, the share of Scots pine in regenerations in southern Sweden has decreased alarmingly during the last twenty years, yielding space to Norway spruce. Recent surveys have shown that Scots pine is rarely the species of future crop trees in young stands. Forest ownersu2019 perception of the uncertainty of Scots pine regeneration outcomes has been identified as one of the main factors causing this trend. Conventional regeneration methods for Scot Pine in southern Sweden are planting, direct seeding and natural regeneration with seed trees or under shelterwood. There is still a lack of knowledge about the long term effects of the regeneration method on growth and economy of Scots pine stands in the region. In present study long term development of Scots pine stands is simulated starting from short term regeneration outcomes observed in actual field experiments. Economy of the stand management is analysed in terms of cash-flow and Land Expectation Value (LEV), volume growth in terms of mean annual increment (MAI) for whole rotation. Effects of different discount rates and regeneration costs on the LEV outcomes are tested.

Download or read book The Importance of Thinning Grade in Stands of Norway Spruce written by Tord Johansson and published by . This book was released on 1987 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Cold storage and Planting Date on Subsequent Growth Starch and Nitrogen Content in Scots Pine Pinus Sylvestris and Norway Spruce Picea Abies Seedlings written by Anders Ericsson and published by . This book was released on 1983 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Early Growth Of Planted Norway Spruce And Scots Pine After Site Preparation In Sweden written by Karin Hjelm and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Norway spruce (Picea abies (L.) H. Karst) and Scots pine (Pinus sylvestris L.) have different site preferences, but silvicultural recommendations for their regeneration at planting (including site preparation) are often the same. Thus, there is a clear need for greater understanding of species-specific interactions between site preparation and site properties. To meet this need, the speciesu2019 growth and survival have been monitored at both fertile and poor sites in northern and southern Sweden. At each of these sites, effects of three types of site preparation u2014 removed humus (RH), deep soil cultivation (DSC) and control (C, no site preparation) u2014 were compared. Results show that Scots pine grew more rapidly initially than Norway spruce, and DSC site preparation promoted growth of both species. However, on poor sites there was a delay in growth responses. In addition, removal of organic material in the RH treatment caused a sustained growth check of Norway spruce, but not for Scots pine. This study confirms that it is beneficial to use site preparation as it increases survival of both species and may increase growth. However, site preparation methods that reduce the amount of organic material in the planting spots should be avoided for Norway spruce.

Download or read book Thinning of Scots Pine and Norway Spruce Monocultures in Sweden written by Urban Nilsson and published by . This book was released on 2010 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of thinning intensity, thinning interval, thinning form and timing of the first thinning on stand level gross- and net stem volume production in Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies L. Karst) was investigated in a nationwide field experiment across Sweden. In total, 35 Scots pine sites distributed from the south to the north of Sweden and 13 Norway spruce sites located in the south and central parts of Sweden were investigated. Thinning treatments ranged from unthinned control, to light and moderate repeated thinnings, to a treatment where 60-70% of the basal area was removed in a single thinning. In addition, thinning from above was compared to thinning from below and delayed first thinning was compared to early first thinning. The average measurement period was 31 years for Scots pine and 30 years for Norway spruce. All Scots pine thinning treatments reduced the total gross stem volume production compared to the unthinned control, whereas only the heaviest thinning treatments, in which a large proportion of the basal area was removed, reduced the total gross stem volume production for Norway spruce. Thinning from above did not affect total gross stem volume production of Scots pine, but there was a tendency towards lower production in Norway spruce. For Norway spruce, thinning from above resulted in lower net stem volume production than thinning from below. Delaying the first thinning did not affect gross stem volume production for either Scots pine or Norway spruce. Net volume production and volume production in trees with diameter at breast height> 8 cm was higher for the light thinning treatment than for the unthinned control in Norway spruce. In Scots pine, there was no difference between the light thinning treatment and unthinned control in net volume production. For cots pine, the heavy thinning treatments decreased net volume production compared to the unthinned threatment whereas there were no differences in net volume production between the heavy thinning treatments and unthinned control in Norway spruce.

Download or read book Estimation Of Site Index For Scots Pine And Norway Spruce Stands In South Finland Using Site Properties english Summary written by P. Tamminen and published by . This book was released on 1993 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relationships Between Recent Changes of Growth and Nutrition of Norway Spruce Scots Pine and European Beech Forests in Europe written by Karl-Eugen Rehfuess and published by . This book was released on 1999 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scottish Forestry written by and published by . This book was released on 1993 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: