Sulfur inputs and outputs for two European beech forests growing on different soil substrates

1993 ◽  
Vol 23 (8) ◽  
pp. 1626-1630 ◽  
Author(s):  
S.P. Sah ◽  
K.J. Meiwes
Keyword(s):  
Dry Deposition ◽  
European Beech ◽  
Beech Forest ◽  
Seepage Water ◽  
Forest Site ◽  
Beech Forests ◽  
Flux Balance ◽  
Forest Sites ◽  
Soil Substrates ◽  
S Deposition

Using a flux-balance approach, the S budget of two heavily polluted beech (Fagussylvatica L.) forest ecosystems growing on acid and calcareous soil substrates was investigated. Total S deposition (dry and wet fall) at both sites was large (2.3 and 3.2 kequiv.•ha−1•year−1 at the calcareous and acidic beech forest sites, respectively). The contribution of dry deposition to the total S deposition in both stands was significant; dry deposition of S exceeded the deposition of S even in bulk precipitation. The atmospheric input of S exceeded, at both sites, the forest S requirements by 6–7 times. Consequently, at the acidic beech forest site, phytotoxins like Al3+ (2 kequiv.•ha−1•year−1) were released with seepage water, neutralizing the acid input. At the calcareous beech forest site, leaching of huge amounts of Ca2+ (15 kequiv.•ha−1•year−1) and HCO3− (12 kequiv.•ha−1•year−1) was significant enough to offset the effects of acid precipitation. About 20% of the atmospheric S input in both beech stands accumulated in the vegetation. The S input–output balance in the acidic beech forest indicated a slight tendency towards S accumulation in the soil in the form of AlOHSO4. The S budget in the calcareous beech forest stand was more or less balanced.

scholarly journals Microclimatic Tipping Points at the Beech–Oak Ecotone in the Western Romanian Carpathians

Forests ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 919 ◽  
Author(s):  
Stefan Hohnwald ◽  
Adrian Indreica ◽  
Helge Walentowski ◽  
Christoph Leuschner
Keyword(s):  
Canopy Structure ◽  
European Beech ◽  
Beech Forest ◽  
Oak Forests ◽  
Tipping Points ◽  
Sensitive Species ◽  
Beech Forests ◽  
Relative Air Humidity ◽  
Elevation Difference ◽  
Romanian Carpathians

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.

scholarly journals Current and simulated structure, growth parameters and regeneration of beech forests with different game management in the Lány Game Enclosure / Struktura, růstové parametry, obnova a modelový vývoj bukových porostů s odlišným způsobem mysliveckého hospodaření v podmínkách Lánské obory

2015 ◽  
Vol 61 (2) ◽  
pp. 78-88 ◽  
Author(s):  
Robin Ambrož ◽  
Stanislav Vacek ◽  
Zdeněk Vacek ◽  
Jan Král ◽  
Igor Štefančík
Keyword(s):  
Cervus Elaphus ◽  
Natural Regeneration ◽  
Growth Parameters ◽  
Cervus Nippon ◽  
European Beech ◽  
Beech Forest ◽  
Fallow Deer ◽  
Limiting Factor ◽  
Beech Forests ◽  
Deer Species

AbstractThe paper presents the results of the study of the current and simulated structure of beech forests in the Lány game preserve, which is situated in the Křivoklátsko Protected Landscape Area in the Czech Republic. The research was conducted at two permanent research plots (PRP) of 0.25 ha in size in a mature beech forest using the FieldMap technology. Typological, soil and phytocoenological stand characteristics and the history of management of both PRP are comparable; however, they differ in the protection against wildlife. The results demonstrated that deer species including red deer (Cervus elaphus L. - 300 head), sika deer (Cervus nippon nippon Temm. - 300 head), mouflon (Ovis musimon Pallas - 250 head) and fallow deer (Dama dama L. - 300 head) is a limiting factor for successful development of natural regeneration of European beech (Fagus sylvatica L.). Natural regeneration on PRP 1 with wild boar herd (Sus scrofa L. - 150 head) is sufficient in relation to site and stand conditions. On the contrary, there is no regeneration on PRP 2 with the occurrence of deer species. The results of biometric measurements and subsequent predictions by the SIBYLA forest biodynamics simulator indicate that the stands are insignificantly structured, mature, productive beech stands with the absence of individuals in the lower tree layer.

scholarly journals The Resistance of European Beech (Fagus sylvatica) From the Eastern Natural Limit of Species to Climate Change

2016 ◽  
Vol 44 (2) ◽  
pp. 625-633 ◽  
Author(s):  
Marius BUDEANU ◽  
Any Mary PETRITAN ◽  
Flaviu POPESCU ◽  
Diana VASILE ◽  
Nicu Constantin TUDOSE
Keyword(s):  
Climate Change ◽  
Radial Growth ◽  
Precipitation Amount ◽  
European Beech ◽  
Beech Forest ◽  
Limiting Factor ◽  
Phenotypic Traits ◽  
Beech Forests ◽  
Growth Indices ◽  
Lower Altitude

In this study, different approaches were used to investigate the vulnerability of beech forests, located at the eastern limit of their natural range, to climate change. To accomplish this, six 2500 m2 plots were sampled in four European beech forest genetic resources, located in Romania at different altitudinal levels, varying from 230 to 580 m in the Bacău hills and between 650 and 1300 m in the Curvature Carpathian (Braşov region). The analysis of trees phenotypic traits, their radial growth, and the regeneration, did not indicate a vulnerability of the sampled stands to the fluctuations of the environmental factors from the 1950-2014 period. The growth indices of all three populations of Bacău hills are negatively correlated with both June air temperature of current year and September of the previous year. The precipitation amount of September previous year positively influenced the growth indices. The radial growth of plots in Braşov region is slightly linked to the climate. The temperature during the growing season represents a limiting factor for stands that are located outside of the optimal altitudinal species distribution (600-1200 m, in Romania), especially at low altitudes. Our results indicated that a rise of the temperature accompanied by a possible reduction of the precipitations (as is predicted for the coming years) could increase the sensibility of beech forests at lower altitude.

scholarly journals Impact of European Beech Forest Diversification on Soil Organic Carbon and Total Nitrogen Stocks–A Meta-Analysis

2021 ◽  
Vol 4 ◽  
Author(s):  
Stephanie Rehschuh ◽  
Mathieu Jonard ◽  
Martin Wiesmeier ◽  
Heinz Rennenberg ◽  
Michael Dannenmann
Keyword(s):  
Climate Change ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Tree Species ◽  
Forest Floor ◽  
Meta Analysis ◽  
European Beech ◽  
Beech Forest ◽  
Beech Forests ◽  
Soc Stocks

Drought-sensitive European beech forests are increasingly challenged by climate change. Admixing other, preferably more deep-rooting, tree species has been proposed to increase the resilience of beech forests to drought. This diversification of beech forests might also affect soil organic carbon (SOC) and total nitrogen (TN) stocks that are relevant for a wide range of soil functions and ecosystem services, such as water and nutrient retention, filter functions and erosion control. Since information of these effects is scattered, our aim was to synthesize results from studies that compared SOC/TN stocks of beech monocultures with those of beech stands mixed with other tree species as well as monocultures of other tree species. We conducted a meta-analysis including 38 studies with 203, 220, and 160 observations for forest floor (i.e., the organic surface layer), mineral soil (0.5 m depth) and the total soil profile, respectively. Monoculture conifer stands had higher SOC stocks compared to monoculture beech in general, especially in the forest floor (up to 200% in larch forests). In contrast, other broadleaved tree species (oak, ash, lime, maple, hornbeam) showed lower SOC stocks in the forest floor compared to beech, with little impact on total SOC stocks. Comparing mixed beech-conifer stands (average mixing ratio with regard to number of trees 50:50) with beech monocultures revealed significantly higher total SOC stocks of around 9% and a smaller increase in TN stocks of around 4%. This equaled a SOC accrual of 0.1 Mg ha−1 yr−1. In contrast, mixed beech-broadleaved stands did not show significant differences in total SOC stocks. Conifer admixture effects on beech forest SOC were of additive nature. Admixing other tree species to beech monoculture stands was most effective to increase SOC stocks on low carbon soils with a sandy texture and nitrogen limitation (i.e., a high C/N ratio and low nitrogen deposition). We conclude that, with targeted admixture measures of coniferous species, an increase in SOC stocks in beech forests can be achieved as part of the necessary adaptation of beech forests to climate change.

scholarly journals Carbon and Nitrogen Pools and Fluxes in Adjacent Mature Norway Spruce and European Beech Forests

Forests ◽  
2016 ◽  
Vol 7 (12) ◽  
pp. 282 ◽  
Author(s):  
Filip Oulehle ◽  
Michal Růžek ◽  
Karolina Tahovská ◽  
Jiří Bárta ◽  
Oldřich Myška
Keyword(s):  
Norway Spruce ◽  
European Beech ◽  
Beech Forests ◽  
Carbon And Nitrogen ◽  
Nitrogen Pools

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
Keyword(s):  
Carbon Stock ◽  
European Beech ◽  
Beech Forest

scholarly journals The composition and diversity of natural regeneration of tree species in gaps under different intensities of forest disturbance

2021 ◽  
Author(s):  
Maame Esi Hammond ◽  
Radek Pokorný ◽  
Daniel Okae-Anti ◽  
Augustine Gyedu ◽  
Irene Otwuwa Obeng
Keyword(s):  
Tree Species ◽  
Natural Regeneration ◽  
Forest Disturbance ◽  
Forest Site ◽  
Gap Formation ◽  
Tree Species Composition ◽  
Forest Sites ◽  
Significant Difference ◽  
Shade Tolerant Species ◽  
Disturbed Forest

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.

scholarly journals Biotic and Abiotic Determinants of Soil Organic Matter Stock and Fine Root Biomass in Mountain Area Temperate Forests—Examples from Cambisols under European Beech, Norway Spruce and Silver Fir (Carpathians, Central Europe)

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 823
Author(s):  
Anna Zielonka ◽  
Marek Drewnik ◽  
Łukasz Musielok ◽  
Marcin K. Dyderski ◽  
Dariusz Struzik ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Norway Spruce ◽  
Root Biomass ◽  
Fine Root ◽  
Stand Density ◽  
European Beech ◽  
Fine Root Biomass ◽  
Silver Fir ◽  
Beech Forests

Forest ecosystems significantly contribute to the global organic carbon (OC) pool, exhibiting high spatial heterogeneity in this respect. Some of the components of the OC pool in a forest (woody aboveground biomass (wAGB), coarse root biomass (CRB)) can be relatively easily estimated using readily available data from land observation and forest inventories, while some of the components of the OC pool are very difficult to determine (fine root biomass (FRB) and soil organic matter (SOM) stock). The main objectives of our study were to: (1) estimate the SOM stock; (2) estimate FRB; and (3) assess the relationship between both biotic (wAGB, forest age, foliage, stand density) and abiotic factors (climatic conditions, relief, soil properties) and SOM stocks and FRB in temperate forests in the Western Carpathians consisting of European beech, Norway spruce, and silver fir (32 forest inventory plots in total). We uncovered the highest wAGB in beech forests and highest SOM stocks under beech forest. FRB was the highest under fir forest. We noted a considerable impact of stand density on SOM stocks, particularly in beech and spruce forests. FRB content was mostly impacted by stand density only in beech forests without any discernible effects on other forest characteristics. We discovered significant impacts of relief-dependent factors and SOM stocks at all the studied sites. Our biomass and carbon models informed by more detailed environmental data led to reduce the uncertainty in over- and underestimation in Cambisols under beech, spruce, and fir forests for mountain temperate forest carbon pools.

scholarly journals Fate of nitrogen released from 15N-labeled litter in European beech forests

2001 ◽  
Vol 21 (2-3) ◽  
pp. 153-162 ◽  
Author(s):  
B. Zeller ◽  
M. Colin-Belgrand ◽  
E. Dambrine ◽  
F. Martin
Keyword(s):  
European Beech ◽  
Beech Forests ◽  
Fate Of Nitrogen

Evaluation of Snow Albedo in Land Models for Weather and Climate Studies

2010 ◽  
Vol 49 (3) ◽  
pp. 363-380 ◽  
Author(s):  
Zhuo Wang ◽  
Xubin Zeng
Keyword(s):  
Climate Models ◽  
Snow Water Equivalent ◽  
Weather Forecasting ◽  
Vegetation Type ◽  
Global Model ◽  
Forest Site ◽  
Snow Albedo ◽  
Community Land Model ◽  
In Situ Data ◽  
Forest Sites

Abstract Snow albedo plays an important role in land models for weather, climate, and hydrometeorological studies, but its treatment in various land models still contains significant deficiencies. Complementary to previous studies that evaluated the snow albedo as part of an overall land model study, the snow albedo formulations as used in four major weather forecasting and climate models [European Centre for Medium-Range Weather Forecasts (ECMWF), National Centers for Environmental Prediction (NCEP) “Noah” land model, National Center for Atmospheric Research (NCAR) Community Land Model (CLM3), and NCEP global model] were directly evaluated here using multiyear Boreal Ecosystem–Atmosphere Study (BOREAS) in situ data over grass and forest sites. First, four idealized cases over grass and forest sites were designed to understand better the different albedo formulations in these models. Then the BOREAS data were used to evaluate snow albedo and relevant formulations and to identify deficiencies of each model. Based on these analyses, suggestions that involve only minor changes in parameters or formulations were made to significantly reduce these deficiencies of each model. For the ECMWF land model, using the square root of snow water equivalent (SWE), rather than SWE itself, in the computation of snow fraction would significantly reduce the underestimation of albedo over grass. For the NCEP Noah land model, reducing (increasing) the critical SWE for full snow cover over short (tall) vegetation would reduce the underestimate (overestimate) of snow albedo over the grass (forest) site. For the NCAR CLM3, revising the coefficient used in the ground snow-fraction computation would substantially reduce the albedo underestimation over grass. For the albedo formulations in the NCEP global model, replacing the globally constant fresh snow albedo by the vegetation-type-dependent Moderate-Resolution Imaging Spectroradiometer (MODIS) maximum snow albedo would significantly improve the overestimation of model albedo over forest.

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