scholarly journals Features of natural regeneration of the main tree species in different forest conditions in Omsk region

10.12737/6268 ◽  
2014 ◽  
Vol 4 (3) ◽  
pp. 48-56
Author(s):  
Трушина ◽  
Irina Trushina ◽  
Сидоренков ◽  
Viktor Sidorenkov ◽  
Дорощенкова ◽  
...  

This article states the result of research at terms of natural regeneration of main forest-forming species (birch, pine) in different silvicultural conditions in Omsk region that based at processed data from 58 test plots. Zoning of the region for reforestation types is given, tak-ing into account environmental factors, includ-ing topography, soil and differentiation of hy-drological conditions and typological characte-ristics of forest stands. Zoning of the area for reforestation activities differentiation can be used in future to develop a system of forest management activities for promotion of natural regeneration.

2016 ◽  
Vol 11 (2) ◽  
pp. 100-104
Author(s):  
Бурганов ◽  
Farit Burganov ◽  
Минниханов ◽  
Azat Minnikhanov ◽  
Файзрахманов ◽  
...  

Nowadays, the forest policy in the field of forest management and husbandry in the Russian Federation is aimed at the possibility of wood realization, produced by different forest owners. The solution of this sharp problem in the Republic of Tatarstan is more associated with the launch of the plant in Elabuga for the production of resin-bonded chipboard, which served as a stimulus for action by the Ministry of Forestry, and it became necessary to make optimal computational wood-cutting area and placement volumes of storage for forest districts of Tatarstan. The article discusses: the structure of forest stands by groups of tree species and age groups of the Republic of Tatarstan as of 01.01.2016; the distribution of forest by age class; the allocation of forest areas of the the Republic of Tatarstan by dominant species in the period from 1940 to 2016.


2019 ◽  
Vol 12 (2) ◽  
pp. 92-115 ◽  
Author(s):  
Martin Smola ◽  
Antonín Kusbach ◽  
Tadeáš Štěrba ◽  
Radim Adolt ◽  
Michal Nečas

Abstract A forest management plan based on ecological principles and forest management sustainability was elaborated for the Domogt Sharyn Gol Company, Mongolia. We presented possibility of use of principles and methods traditionally utilized in forest management planning in the Czech Republic. A used methodology was adjusted for the forestry legislature in Mongolia. A stratification of site characteristics and the forest development type concept was used as a framework for assessment of a forest property state via an operational forest inventory. A randomly generalized network of 354 inventory plots on the total area of 3 194 ha with spacing of 300 × 300 m was established for measurements of tree species, natural regeneration and a volume of lying deadwood. We produced a text, table, graph, figure and map material consisted of areal, tree species and wood volume structuring including calculation of decenal logging, thinning treatments, plantation activities and natural regeneration support. This forest management plan provides a feasible perspective not only towards immediate commercial benefits but also towards sustainability of forest yield and other ecological forest functions. This way of management planning is also a save way towards mitigation of current environmental issues in a Mongolian forest landscape.


2020 ◽  
Vol 118 (3) ◽  
pp. 219-232 ◽  
Author(s):  
Mark A White ◽  
Meredith W Cornett ◽  
Katie Frerker ◽  
Julie R Etterson

Abstract Northeastern Minnesota forests are vulnerable to declines in boreal tree species at their southern range limits. Temperate tree species may have a competitive advantage in this region as the climate warms. Enhancing the adaptive capacity of northern forests requires a multifaceted approach, one that involves cooperative relations given the region’s complex ownership patterns. In this context, a nongovernment conservation organization and public land-management agencies are partnering to test climate-informed forest management approaches, including: (1) Resilience, targeting northern conifer planting at “climate-resilient sites” with suitable microclimates to sustain boreal species over time; (2) Transition, catalyzing the shift to a temperate forest matrix using within-range plantings of native, climate-adapted tree species. Deployed together, Resilience and Transition strategies can help the Northwoods shift towards future forest conditions. Results from this work will help land managers make informed decisions about forest management and enhance landscape resilience in a changing climate.


Author(s):  
Jaromír Macků

Forest stands naturalness degree represents the real tree species composition comparison with the tree species on natural vegetation level – It means forest typology units. The natural tree species composition is derived from Typological System of UHUL (Forest Management Institute). The degree of naturalness of forests is one of the attributes for the assessment of the ecological stability of forests, whilst the broader basis for analysis of sustainable development of the territory.The real tree species composition comes from the forest management planes database and the natural potential vegetation one from typological sites units (forest site complex). Forests types complex is a higher unit of this system hierarchy. The solution based on comparison of the real species composition with natural potential vegetation, e.g. forest stands naturalness degree, is to be used in the ecosystem platform way. The preparation of entry data, e.g. allocation of structured stand type code to the real and natural species composition precedes the analysis itself. Then follows the tree species index calculation which means the final sum of tree index present and any absent species. This index presents the difference between the real tree condition and the model one. It is used entirely original concept algorithm of structured stand types.This algorithm allows for the application computer technology and process so the range from forest stand group of up to the large territory (CZ).The naturalness degree classification is defined on 0–6 levels, from zero degree for introduced species, 3rd degree for cultural forests, to 6th degree for those with natural tree composition. The limited criterion is the stand naturalness degree which should be on 4th level and above. This method is for 15 years of application not only in the works of forestry sites typology completely worked.


2019 ◽  
Author(s):  
Franziska M. Willems ◽  
J.F. Scheepens ◽  
Christian Ammer ◽  
Svenja Block ◽  
Anna Bucharova ◽  
...  

AbstractMany organisms respond to anthropogenic environmental change through shifts in their phenology. In plants, flowering is largely driven by temperature, and therefore affected by climate change. However, on smaller scales climatic conditions are also influenced by other factors, including habitat structure. A group of plants with a particularly distinct phenology are the understorey herbs in temperate forests. In these forests, management alters tree species composition and stand structure and, as a consequence, light conditions and microclimate. Forest management should thus also affect the phenology of understorey herbs. To test this, we recorded the flowering phenology of 20 early-flowering herbs on 100 forest plots varying in management intensity, from near-natural to intensely managed forests, in Central and Southern Germany. We found that in forest stands with a high management intensity the plants flowered on average about two weeks later than in unmanaged forests. This was largely because management also affected microclimate (e.g. spring temperatures of 5.9 °C in managed coniferous, 6.7 in managed deciduous and 7.0 °C in unmanaged deciduous plots), which in turn affected phenology, with plants flowering later on colder and moister forest stands (+4.5 days per −1°C and 2.7 days per 10 % humidity increase). Among forest characteristics, the main tree species as well as the age, overall crown projection area, structural complexity and spatial distribution of trees had the greatest influence on microclimate. Our study demonstrates that forest management alters plant phenology, with potential far-reaching consequences for the ecology and evolution of understorey communities. More generally, our study suggests that besides climate change other drivers of environmental change, too, can influence the phenology of organisms.


2019 ◽  
Vol 48 (3) ◽  
pp. 417-425
Author(s):  
Md Khayrul Alam Bhuiyan ◽  
Md Akhter Hossain ◽  
Abdul Kadir Ibne Kamal ◽  
Mohammed Kamal Hossain ◽  
Mohammed Jashimuddin ◽  
...  

A study was conducted by using 5m × 5m sized 179 quadrates following multistage random sampling method for comparative regenerating tree species, quantitative structure, diversity, similarity and climate resilience in the degraded natural forests and plantations of Cox's Bazar North and South Forest Divisions. A total of 70 regenerating tree species were recorded representing maximum (47 species) from degraded natural forests followed by 43 species from 0.5 year 39 species from 1.5 year and 29 species from 2.5 year old plantations. Quantitative structure relating to ecological dominance indicated dominance of Acacia auriculiformis, Grewia nervosa and Lithocarpus elegans seedlings in the plantations whereas seedlings of Aporosa wallichii, Suregada multiflora and Grewia nervosa in degraded natural forests. The degraded natural forests possess higher natural regeneration potential as showed by different diversity indices. The dominance-based cluster analysis showed 2 major cluster of species under one of which multiple sub-clusters of species exists. Poor plant diversity and presence of regenerating exotic species in the plantations indicated poor climate resilience of forest ecosystem in terms of natural regeneration.


Author(s):  
Maame Esi Hammond ◽  
Radek Pokorný ◽  
Daniel Okae-Anti ◽  
Augustine Gyedu ◽  
Irene Otwuwa Obeng

AbstractThe positive ecological interaction between gap formation and natural regeneration has been examined but little research has been carried out on the effects of gaps on natural regeneration in forests under different intensities of disturbance. This study evaluates the composition, diversity, regeneration density and abundance of natural regeneration of tree species in gaps in undisturbed, intermittently disturbed, and disturbed forest sites. Bia Tano Forest Reserve in Ghana was the study area and three gaps each were selected in the three forest site categories. Ten circular subsampling areas of 1 m2 were delineated at 2 m spacing along north, south, east, and west transects within individual gaps. Data on natural regeneration < 350 cm height were gathered. The results show that the intensity of disturbance was disproportional to gap size. Species diversity differed significantly between undisturbed and disturbed sites and, also between intermittently disturbed and disturbed sites for Simpson’s (1-D), Equitability (J), and Berger–Parker (B–P) indices. However, there was no significant difference among forest sites for Shannon diversity (H) and Margalef richness (MI) indices. Tree species composition on the sites differed. Regeneration density on the disturbed site was significantly higher than on the two other sites. Greater abundance and density of shade-dependent species on all sites identified them as opportunistic replacements of gap-dependent pioneers. Pioneer species giving way to shade tolerant species is a natural process, thus make them worst variant in gap regeneration.


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