scholarly journals Carbon Stock of European Beech Forest; A Case at M. Pizzalto, Italy

2012 ◽  
Vol 1 ◽  
pp. 159-168 ◽  
Author(s):  
Aida Taghavi Bayat ◽  
Hein van Gils ◽  
Michael Weir
2012 ◽  
Vol 58 (No. 4) ◽  
pp. 152-164
Author(s):  
S. Hristovski ◽  
L. Melovski ◽  
M. Šušlevska ◽  
L. Grupče

The aim of this paper is to present the results of the investigation on belowground biomass and its annual increment in a beech ecosystem (Calamintho grandiflorae-Fagetum) in Mavrovo National Park, Republic of Macedonia. Belowground biomass was estimated in three layers of the ecosystem (tree, shrub and herb layers) for seven years during the period 1997–2005. Allometric regressions were established for the relationship of root biomass from volume index (D<sup>2</sup>H, diameter squared × height) on a sample of 10 model trees and 13 model shrubs of European beech (Fagus sylvatica L.). Fine root biomass of trees and shrubs was estimated in soil samples to a depth of 145 cm and divided into live and dead fine roots and subdivided into thickness classes. Belowground biomass of the herb layer was assessed in 20 herb species. It was estimated that the total belowground biomass in the ecosystem was 57.75 ·ha<sup>–1</sup>. The contribution of shrub and herb layers was insignificant (less than 0.2%). Biomass of the live fine roots was 10.16 t·ha<sup>–1</sup>, i.e. 18% of the total belowground biomass. Annual increment of trees and shrubs was 1.03 t·ha<sup>–1</sup>·y<sup>–1</sup> and 4.6 kg·ha<sup>–1</sup>·y<sup>–1</sup>, respectively.    


2008 ◽  
Vol 65 (2) ◽  
pp. 202-202 ◽  
Author(s):  
Thomas Eglin ◽  
Christian Walter ◽  
Claude Nys ◽  
Stéphane Follain ◽  
Françoise Forgeard ◽  
...  

2019 ◽  
Vol 148 ◽  
pp. 208-220 ◽  
Author(s):  
Jing Liu ◽  
Andrew K. Skidmore ◽  
Tiejun Wang ◽  
Xi Zhu ◽  
Joe Premier ◽  
...  

Plant Ecology ◽  
2020 ◽  
Vol 221 (10) ◽  
pp. 1005-1016
Author(s):  
Romana Prausová ◽  
Jan Doležal ◽  
Marcel Rejmánek

2020 ◽  
Vol 96 (10) ◽  
Author(s):  
Michal Choma ◽  
Karolina Tahovská ◽  
Eva Kaštovská ◽  
Jiří Bárta ◽  
Michal Růžek ◽  
...  

ABSTRACT Anthropogenically enhanced atmospheric sulphur (S) and nitrogen (N) deposition has acidified and eutrophied forest ecosystems worldwide. However, both S and N mechanisms have an impact on microbial communities and the consequences for microbially driven soil functioning differ. We conducted a two-forest stand (Norway spruce and European beech) field experiment involving acidification (sulphuric acid addition) and N (ammonium nitrate) loading and their combination. For 4 years, we monitored separate responses of soil microbial communities to the treatments and investigated the relationship to changes in the activity of extracellular enzymes. We observed that acidification selected for acidotolerant and oligotrophic taxa of Acidobacteria and Actinobacteria decreased bacterial community richness and diversity in both stands in parallel, disregarding their original dissimilarities in soil chemistry and composition of microbial communities. The shifts in bacterial community influenced the stoichiometry and magnitude of enzymatic activity. The bacterial response to experimental N addition was much weaker, likely due to historically enhanced N availability. Fungi were not influenced by any treatment during 4-year manipulation. We suggest that in the onset of acidification when fungi remain irresponsive, bacterial reaction might govern the changes in soil enzymatic activity.


2020 ◽  
Vol 57 (7) ◽  
pp. 1363-1375 ◽  
Author(s):  
Peter Schall ◽  
Steffi Heinrichs ◽  
Christian Ammer ◽  
Manfred Ayasse ◽  
Steffen Boch ◽  
...  

Forests ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 919 ◽  
Author(s):  
Stefan Hohnwald ◽  
Adrian Indreica ◽  
Helge Walentowski ◽  
Christoph Leuschner

European beech (Fagus sylvatica) is a drought-sensitive species that likely will retreat from its xeric distribution edges in the course of climate warming. Physiological measurements indicate that the species may not only be sensitive to soil water deficits, but also to high temperatures and elevated atmospheric vapor pressure deficits (vpd). Through microclimatological measurements in the stand interior across near-natural beech forest–oak forest ecotones, we searched for microclimatic tipping points in the contact zone with the aim to define the thermic and hydrometeorological limits of beech more precisely. In three transects in the foothills of the Romanian western Carpathians, we measured in mid-summer 2019 air temperature, relative air humidity, and vpd at 2 m height in the stand interior across the ecotone from pure oak to pure beech forests, and compared the readings to the microclimate in forest gaps. Mean daytime temperature (T) and vpd were by 2 K and 2 hPa, respectively, higher in the oak forests than the beech forests; the extremes differed even more. Especially in the second half of the day, the oak forests heated up and were more xeric than the beech forests. Part of the differences is explained by the elevation difference between oak and beech forests (200–300 m), but species differences in canopy structure, leaf area, and canopy transmissivity enhance the microclimatic contrast. Our T and vpd data point to thresholds at about 30 °C and 25 hPa as maxima tolerated by beech in the lowermost shade canopy for extended periods. In conclusion, the rather sharp stand microclimatic gradient demonstrated here for the xeric distribution limit of beech may well be the decisive factor that hinders the spread of beech into the warmer oak forests.


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