scholarly journals The potential for natural forest regeneration in the southern taiga zone of Western Siberia.

2017 ◽  
Vol 6 (2) ◽  
pp. 46-56
Author(s):  
Сидоренков ◽  
Viktor Sidorenkov ◽  
Дебков ◽  
Nikita Debkov ◽  
Жафяров ◽  
...  
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Forest Regeneration ◽  
Western Siberia ◽  
Southern Taiga ◽  
Taiga Zone ◽  
Forest Types ◽  
Tree Species Composition ◽  
Natural Forest Regeneration ◽  
Southern Taiga Zone

Survey of clearcut areas highlighted optimal options for coniferous undergrowth reservation in various forest types de-pending on height, number and spacing. Proposals to improve tree species composition with various thinning options are based on the findings and analysis of natural stand shaping experience. The experiment results support an opportunity to shape target stands from coniferous undergrowth with its sufficient reservation during clearcut.

scholarly journals Tree Species Composition and Height-diameter Allometry of Three Forest Types in Northern Thailand

2018 ◽  
Vol 17 (4) ◽  
Author(s):  
Nuttaluck Khamyong ◽  
◽  
Prasit Wangpakapattanawong ◽  
Sutthathorn Chairuangsri ◽  
Angkhana Inta ◽  
...  
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Forest Types ◽  
Northern Thailand ◽  
Tree Species Composition

scholarly journals Die Zürcher Wälder um 1823 – Betriebsformen und Baumarten

2015 ◽  
Vol 166 (1) ◽  
pp. 24-31
Author(s):  
Mirjam Bader ◽  
Urs Gimmi ◽  
Matthias Bürgi
Keyword(s):  
Forest Management ◽  
Species Composition ◽  
19Th Century ◽  
Tree Species ◽  
Management Practices ◽  
Forest Type ◽  
Forest Types ◽  
Tree Species Composition ◽  
Early 19Th Century ◽  
Coppice With Standards

The forests in the Canton of Zurich around 1823 – forest types and tree species Based on early forest management plans from 1823, this paper analyses forest management practices and tree species composition in the public forests of the Canton of Zurich in the early 19th century. Forest type distribution across the canton is reconstructed and detailed tree species composition is shown for 31 communities in the north-western part of the canton. For these communities, we compared the historical tree species composition with modern data from a regional forest inventory. The results show that coppice with standards was the most important forest type in the early 19th century. Tree species composition largely depends on the forest types. The highest diversity in tree species can be found in coppice and coppice-with-standards forests. The analyses reveal no clear relationship between tree species composition and environmental factors such as climate, topography and soil. This leads to the conclusion that in the early 19th century already management had a stronger influence on tree composition than natural conditions. During the last 200 years, tree species composition in the Canton of Zurich changed profoundly. Whereas today's forests are more natural in terms of species composition, they are less diverse in species. Knowing the tree species composition in the past can thus be helpful in conservation projects, e.g. in establishing coppice and coppice-with- standards forests in order to promote rare light-demanding plant and animal species.

Dynamika obnovy a vývoja lesných porastov na Slovensku počas ostatných piatich desaťročí

2013 ◽  
Vol 59 (2) ◽  
pp. 139-144
Author(s):  
Jozef Konôpka ◽  
Vladimír Šebeň ◽  
Bohdan Konôpka
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Forest Regeneration ◽  
Historical Data ◽  
General Information ◽  
Forest Growth ◽  
Age Classes ◽  
Natural Conditions ◽  
Tree Species Composition ◽  
Young Forest

Abstract General information on forest growth and development as well as different approaches of forest management are presented in the introduction of the paper. Furthermore, it shows an analysis of the development of tree species composition in the Slovak forests during the last 50 years. Historical data base for the analysis originated from the forestry records (especially Permanent Forest Inventory). Our attention was focused on reforestation with respect to tree species, tree species composition in young forest stands by age classes and relations between these forest characteristics. The next section of the paper describes new proposals for regulation of forest regeneration and reforestation with the aim to achieve desired tree species composition in all age classes, not only in accordance with natural conditions but also respecting human demands in the future.

scholarly journals National Forest Inventories capture the multifunctionality of managed forests in Germany

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Nadja K. Simons ◽  
María R. Felipe-Lucia ◽  
Peter Schall ◽  
Christian Ammer ◽  
Jürgen Bauhus ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Species Composition ◽  
Tree Species ◽  
Spatial Scales ◽  
National Level ◽  
National Forest ◽  
Timber Production ◽  
Managed Forests ◽  
Forest Types ◽  
Tree Species Composition

Abstract Background Forests perform various important ecosystem functions that contribute to ecosystem services. In many parts of the world, forest management has shifted from a focus on timber production to multi-purpose forestry, combining timber production with the supply of other forest ecosystem services. However, it is unclear which forest types provide which ecosystem services and to what extent forests primarily managed for timber already supply multiple ecosystem services. Based on a comprehensive dataset collected across 150 forest plots in three regions differing in management intensity and species composition, we develop models to predict the potential supply of 13 ecosystem services. We use those models to assess the level of multifunctionality of managed forests at the national level using national forest inventory data. Results Looking at the potential supply of ecosystem services, we found trade-offs (e.g. between both bark beetle control or dung decomposition and both productivity or soil carbon stocks) as well as synergies (e.g. for temperature regulation, carbon storage and culturally interesting plants) across the 53 most dominant forest types in Germany. No single forest type provided all ecosystem services equally. Some ecosystem services showed comparable levels across forest types (e.g. decomposition or richness of saprotrophs), while others varied strongly, depending on forest structural attributes (e.g. phosphorous availability or cover of edible plants) or tree species composition (e.g. potential nitrification activity). Variability in potential supply of ecosystem services was only to a lesser extent driven by environmental conditions. However, the geographic variation in ecosystem function supply across Germany was closely linked with the distribution of main tree species. Conclusions Our results show that forest multifunctionality is limited to subsets of ecosystem services. The importance of tree species composition highlights that a lack of multifunctionality at the stand level can be compensated by managing forests at the landscape level, when stands of complementary forest types are combined. These results imply that multi-purpose forestry should be based on a variety of forest types requiring coordinated planning across larger spatial scales.

Langfristige Entwicklung von zwei Waldgesellschaften im Białowieża-Urwald

2008 ◽  
Vol 159 (4) ◽  
pp. 80-90 ◽  
Author(s):  
Bogdan Brzeziecki ◽  
Feliks Eugeniusz Bernadzki
Keyword(s):  
Species Composition ◽  
Tree Species ◽  
Stand Structure ◽  
Temporal Dynamics ◽  
Structural Parameters ◽  
Forest Communities ◽  
Natural Forests ◽  
Tree Species Composition ◽  
Strong Trend ◽  
Long Term Study

The results of a long-term study on the natural forest dynamics of two forest communities on one sample plot within the Białowieża National Park in Poland are presented. The two investigated forest communities consist of the Pino-Quercetum and the Tilio-Carpinetum type with the major tree species Pinus sylvestris, Picea abies, Betula sp., Quercus robur, Tilia cordata and Carpinus betulus. The results reveal strong temporal dynamics of both forest communities since 1936 in terms of tree species composition and of general stand structure. The four major tree species Scots pine, birch, English oak and Norway spruce, which were dominant until 1936, have gradually been replaced by lime and hornbeam. At the same time, the analysis of structural parameters indicates a strong trend towards a homogenization of the vertical stand structure. Possible causes for these dynamics may be changes in sylviculture, climate change and atmospheric deposition. Based on the altered tree species composition it can be concluded that a simple ≪copying≫ (mimicking) of the processes taking place in natural forests may not guarantee the conservation of the multifunctional character of the respective forests.

Effects of nitrogen deposition on nitrate leaching from forests of the northeastern United States will change with tree species composition

2017 ◽  
Vol 47 (8) ◽  
pp. 997-1009 ◽  
Author(s):  
Katherine F. Crowley ◽  
Gary M. Lovett
Keyword(s):  
United States ◽  
Species Composition ◽  
Nitrate Leaching ◽  
Tree Species ◽  
N Deposition ◽  
Red Oak ◽  
Northeastern United States ◽  
Tree Species Composition ◽  
White Ash ◽  
Species Change

As tree species composition in forests of the northeastern United States changes due to invasive forest pests, climate change, or other stressors, the extent to which forests will retain or release N from atmospheric deposition remains uncertain. We used a species-specific, dynamic forest ecosystem model (Spe-CN) to investigate how nitrate (NO3–) leaching may vary among stands dominated by different species, receiving varied atmospheric N inputs, or undergoing species change due to an invasive forest pest (emerald ash borer; EAB). In model simulations, NO3– leaching varied widely among stands dominated by 12 northeastern North American tree species. Nitrate leaching increased with N deposition or forest age, generally with greater magnitude for deciduous (except red oak) than coniferous species. Species with lowest baseline leaching rates (e.g., red spruce, eastern hemlock, red oak) showed threshold responses to N deposition. EAB effects on leaching depended on the species replacing white ash: after 100 years, predicted leaching increased 73% if sugar maple replaced ash but decreased 55% if red oak replaced ash. This analysis suggests that the effects of tree species change on NO3– leaching over time may be large and variable and should be incorporated into predictions of effects of N deposition on leaching from forested landscapes.

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