scholarly journals Climatic Characteristics of Forest Vegetation Zones of the Czech Republic

2015 ◽  
Vol 7 (3) ◽  
Author(s):  
Jaromír Macků
Keyword(s):  
Czech Republic ◽  
Forest Vegetation ◽  
The Czech Republic ◽  
Vegetation Zones ◽  
Climatic Characteristics

scholarly journals Evaluation of silver birch diameter increment model based on data of the Czech National Forest Inventory

2020 ◽  
Vol 66 (No. 11) ◽  
pp. 471-481
Author(s):  
Jan Kikal ◽  
Zdeněk Adamec
Keyword(s):  
Czech Republic ◽  
Forest Inventory ◽  
National Forest Inventory ◽  
Forest Vegetation ◽  
National Forest ◽  
Vegetation Zone ◽  
The Czech Republic ◽  
Diameter Increment ◽  
Breast Height ◽  
Diameter Increment Model

In the Czech Republic, the silver birch (Betula pendula Roth.) is considered as a pioneer and a soil preparing tree species. It occurs mainly on clearcutting areas after disturbances. The aim of this study was to fit breast height diameter increment model for birch with respect to tree age, share of birch trees and forest site type (ecological series – ES and forest vegetation zones – FVZ). We used data of both cycles of National Forest Inventory of the Czech Republic. We evaluated production potential of this species. We tested Korf and Michailoff increment models in variant of nonlinear least squares model (NLS) and nonlinear mixed effects model (NLME). Michailoff models performed better. We found seven statistically significant and practically applicable models. The greatest influence on increment of diameter at breast height have forest vegetation zone and ecological series whereas the influence of the share of birch in forest stand is smaller. The highest absolute values of diameter increment were on gleyed or enriched with water sites in the fourth forest vegetation zone.

scholarly journals  Expected impacts of climate change on forests: Czech Republic as a case study

2011 ◽  
Vol 57 (No. 10) ◽  
pp. 422-431 ◽  
Author(s):  
T. Hlásny ◽  
J. Holuša ◽  
ŠtěpánekP ◽  
TurčániM ◽  
SitkováZ ◽  
...  
Keyword(s):  
Czech Republic ◽  
Forest Tree ◽  
Forest Vegetation ◽  
Limiting Factor ◽  
The Czech Republic ◽  
Distant Future ◽  
Vegetation Season ◽  
Fundamental Information ◽  
Near Future

  We provide fundamental information about the future development of selected climate elements in relation to anticipated threat to forests in the Czech Republic. All analyses were carried out in relation to four elevation zones with specific potential forest vegetation – up to 350 m a.s.l. (oak dominance), 350–600 m a.s.l. (beech dominance), 600–900 m a.s.l. (beech-fir dominance), 900–1,100 m a.s.l. (spruce dominance). We found out that while the projected increase in mean annual air temperature is almost constant over the Czech Republic (+3.25–3.5°C in the distant future), the frequency of heat spells at lower elevations is expected to increase dramatically compared to higher elevations. The precipitation totals during the vegetation season are projected to increase in the near future by up to 10% and to decrease in the distant future by up to 10% over all vegetation zones. In general, drought is presumed to become a key limiting factor at lower elevations, while increased temperature along with the prolonged vegetation season at higher elevations can be beneficial to forest vegetation. Consequently, northward progression of forest tree species and retraction of the species lower distribution range are a generic response pattern. Such impacts are presumed to be accompanied by changes in the distribution and population dynamics of pests and pathogens. Mainly the impacts on two key forest pests, Ips typographus and Lymantria dispar, are discussed.  

scholarly journals Circulation and Climate Variability in the Czech Republic between 1961 and 2020: A Comparison of Changes for Two “Normal” Periods

Atmosphere ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 137
Author(s):  
Rudolf Brázdil ◽  
Pavel Zahradníček ◽  
Petr Dobrovolný ◽  
Jan Řehoř ◽  
Miroslav Trnka ◽  
...  
Keyword(s):  
Czech Republic ◽  
Sunshine Duration ◽  
Statistical Significance ◽  
Statistical Characteristics ◽  
The Czech Republic ◽  
Circulation Types ◽  
Recent Climate ◽  
Normal Period ◽  
Objective Classification ◽  
Climatic Characteristics

Thirty-year periods are treated in climatology as spans with relatively representative and stable climatic patterns, which can be used for calculating climate normals. Annual and seasonal series of circulation types were used to compare two 30-year sub-periods, 1961–1990 and 1991–2020, the second one being strongly influenced by recent global warming. This analysis was conducted according to the objective classification of circulation types and the climatic characteristics of sunshine duration, temperature, humidity, precipitation, and wind speed as calculated for the territory of the Czech Republic during the 1961–2020 period. For both sub-periods, their statistical characteristics were calculated, and the statistical significance of differences between them was evaluated. There was a statistically significant increase in the annual frequencies of anticyclonic circulation types and a significant decrease in cyclonic circulation types during 1991–2020 compared with 1961–1990. Generally, in both 30-year periods, significant differences in means, variability, characteristics of distribution, density functions, and linear trends appear for all climatic variables analysed except precipitation. This indicates that the recent 30-year “normal” period of 1991–2020, known to be influenced more by recent climate change, is by its climatic characteristics unrepresentative of the stable climatic patterns of previous 30-year periods.

scholarly journals Psocid taxocenoses (Insecta: Psocoptera) in the forest ecosystems of the Querci-fageta s. lat. zone in the Western Carpathian Mts. and Polonic subprovincy

2013 ◽  
Vol 61 (3) ◽  
pp. 637-646
Author(s):  
Otakar Holuša
Keyword(s):  
Cluster Analysis ◽  
Czech Republic ◽  
Species Composition ◽  
Correspondence Analysis ◽  
Dominant Species ◽  
Forest Ecosystems ◽  
Detrended Correspondence Analysis ◽  
The Czech Republic ◽  
Vegetation Zones ◽  
Characteristic Species

Structure of psocid taxocenoses (Psocoptera) were intensively studied in forest ecosystems of the Western Carpathian Mts. and Polonic biogeographical subprovincy during 1997–2001 in the Czech Republic. Vegetation tiers (= altitudinal vegetation zones) were used as a study frame. Only a part of material, i.e. individuals that was found in the forest ecosystems of Querci-fageta s. lat. communities (= the 3rd oak-beech vegetation tier) was evaluated for purpose of this work. This vegetation tier is widespread in large part of the Opavská pahorkatina hills, in large parts of Podbeskydská pahorktina hills, in the Bílé Karpaty hills and in the foothills of the Vsetínské vrchy hills. 1201 adults comprising 29 species were found in total in the 3rd vegetation tier. As eudominant species, the following ones were found: Peripsocus subfasciatus, Caecilius flavius and Stenopsocus lachlani, as dominant species, the following ones were found: Philotarsus parviceps and Caecilius piceus. In natural geobiocenoses with the level of naturalness of 1 or 2, the following species were found: as eudominant species: Caecilius flavidus, Peripsocus phaeopterus, as dominant species, the following ones were found: Caecilius piceus, Peripsocus subfasciatus, Philotarsus parviceps and Elipsocus moebiusi. Taxocenoses of psocids were evaluated by Detrended Correspondence Analysis (DCA) and Divisive Cluster Analysis (DvClA). This material was compared to another material gained from various vegetation tiers in the Western Carpathians Mts. The characteristic species composition of psocids in the 3rd vegetation tier was as follows – Elipsocus moebiusi – E. hyalinus – Philotarsus parviceps – Ectopsocus meridionalis – Caecilius flavidus.

scholarly journals Environmental Modelling of Forest Vegetation Zones as A Support Tool for Sustainable Management of Central European Spruce Forests

2018 ◽  
Vol 11 (3) ◽  
pp. 45-63
Author(s):  
Ivo Machar ◽  
Veronika Vlckova ◽  
Lubomir Salek ◽  
Vilem Pechanec ◽  
Arkadiusz Nowak ◽  
...  
Keyword(s):  
Climate Change ◽  
Czech Republic ◽  
Forest Management ◽  
Norway Spruce ◽  
Forest Ecosystems ◽  
Sustainable Forest Management ◽  
Climatic Conditions ◽  
Forest Vegetation ◽  
Central European ◽  
Vegetation Zones

Abstract The impact of climate change on forest ecosystems may manifest itself by a shift in forest vegetation zones in the landscape northward and into higher elevations. Studies of climate change-induced vegetation zone shifts in forest ecosystems have been relatively rare in the context of European temperate zone (apart from Alpine regions). The presented paper outlines the results of a biogeographic model of climatic conditions in forest vegetation zones applied in the Central European landscape. The objective of the study is a prediction of future silvicultural conditions for the Norway spruce (Picea abies L. Karst.), which is one of the principal tree species within European forests. The model is based on a general environmental dependence of forest vegetation zones on the long-term effect of altitudinal and exposure climates defined by the mean and extreme air temperatures and the amount and distribution of atmospheric precipitation. The climatological data for the model were provided by a validated regional climate database for 2010 – 2090 according to the SRES A1B scenario, bound to specific geo-referenced points in the landscape. The geobiocoenological data in the model were provided by the Biogeography Register database which contains ecological data on the landscape bound to individual cadastres of the entire Czech Republic. The biogeographic model applies special programs (the FORTRAN programming language) in the environment of geographic information systems. The model outputs can be clearly graphically visualized as scenarios of predicted future climatic conditions of landscape vegetation zones. Modelling of the regional scenario of changes in the climatic conditions of forest vegetation zones reveals that in the prediction period of 2070 and beyond, good and very good climatic conditions for the cultivation of forests with dominant Norway spruce will be found only in some parts of its today’s native range in forest vegetation zones 5 – 8. Based on the results provided by the regional scenario, the authors of this paper recommend fundamental reassessment of the national strategy of sustainable forest management in the Czech Republic, stipulating that the current practice of spruce cultivation be reduced only to areas specifically defined by the biogeographic model. The paper shows that biogeographic models based on the concept of vegetation zoning can be applied not only in regional scenarios of climate change in the landscape but also as support tools for the creation of strategies of sustainable forest management.

scholarly journals Selected agroclimatic characteristics of climatic regions of the Czech Republic

2012 ◽  
Vol 42 (3) ◽  
pp. 269-281
Author(s):  
Mojmír Kohut ◽  
Filip Chuchma ◽  
Petr Hora
Keyword(s):  
Czech Republic ◽  
Meteorological Model ◽  
The Czech Republic ◽  
Climatic Regions ◽  
Regular Network ◽  
Grid Points ◽  
Classification Evaluation ◽  
Meteorological Elements ◽  
Climatic Characteristics ◽  
Original Classification

Abstract The current division of the Czech Republic into climatic regions was carried out according to basic criteria which meet the assumption of similar conditions for growth and development of agricultural crops. Ten climatic regions in the Czech Republic were labelled with numbers 0 (VT, very hot) to 9 (CH, cold). In this paper we have utilized selected agro-climatic characteristics for these climatic regions, which were not considered in the original classification. Evaluation was performed according to the daily interval of agro-meteorological model AVISO with the use of technical series of meteorological elements of a regular network of 789 grid points (10×10 km) for the period of 1961-2010.

scholarly journals The Application of Geobiocoenological Landscape Typology in The Modelling of Climate Change Implications

2015 ◽  
Vol 8 (2) ◽  
pp. 69-81 ◽  
Author(s):  
Veronika Vlčková ◽  
Antonín Buček ◽  
Ivo Machar ◽  
Tomáš Daněk ◽  
Vilém Pechanec ◽  
...  
Keyword(s):  
Climate Change ◽  
Czech Republic ◽  
Norway Spruce ◽  
Landscape Planning ◽  
Climatic Conditions ◽  
The Czech Republic ◽  
Vegetation Zonation ◽  
Vegetation Zones ◽  
Ecological Relationship ◽  
Natural Range

Abstract Geobiocoenological landscape typology, which is used in landscape planning in the Czech Republic, includes vegetation zonation of the landscape. Vegetation zones are determined by climatic conditions. Changes in climatic conditions will probably be manifested in the shift of vegetation zones in the landscape. Mathematical geobiocoenological model of vegetation zonation of the landscape is based on the general ecological relationship between the current vegetation zonation and present climatic conditions and the assumption that this general relationship will be maintained in the future. The paper presents the application of the model using the example of the prediction of changes in climatic conditions for the Norway spruce (the first-generation of the model) and grapevine (the second-generation of the model) in the Czech Republic. In the case of the Norway spruce example, the model shows that the predicted changes in climatic conditions will prevent the cultivation of the spruce in the Czech Republic outside its natural range in mountainous areas. The results of the presented model for grapevine show significant enlargement of areas climatically suitable for growing grapes within the studied area.These examples demonstrate the potential for the application of geobiocoenological landscape typology in the modeling of the effects of climate change in the landscape.

Social variation in size at birth and preterm delivery in the Czech Republic and Sweden, 1989-91

1998 ◽  
Vol 12 (1) ◽  
pp. 7-24 ◽  
Author(s):  
Koupilova ◽  
Vagero ◽  
Leon ◽  
Pikhart ◽  
Prikazsky ◽  
...  
Keyword(s):  
Czech Republic ◽  
Preterm Delivery ◽  
The Czech Republic ◽  
Social Variation ◽  
Size At Birth

On Geropsychology in the Czech Republic

GeroPsych ◽  
2012 ◽  
Vol 25 (3) ◽  
pp. 161-166
Author(s):  
Hana Stepankova ◽  
Eva Jarolimova ◽  
Eva Dragomirecka ◽  
Irena Sobotkova ◽  
Lenka Sulova ◽  
...  
Keyword(s):  
Czech Republic ◽  
Clinical Practice ◽  
Old Age ◽  
Cognitive Rehabilitation ◽  
The Czech Republic ◽  
Rehabilitation Research

This work provides an overview of psychology of aging and old age in the Czech Republic. Historical roots as well as recent activities are listed including clinical practice, cognitive rehabilitation, research, and the teaching of geropsychology.

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