Kooperativer Bibliotheksverbund

Berlin Brandenburg

and
and

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Type of Medium
Language
Year
  • 1
    Language: English
    In: Plant and Soil, 2010, Vol.336(1), pp.405-420
    Description: Atmospheric deposition is an important nutrient input to forests. The chemical composition of the rainfall is altered by the forest canopy due to interception and canopy exchange. Bulk deposition and stand deposition (throughfall plus stemflow) of Na + , Cl − , K + , Ca 2+ , Mg 2+ , PO 4 3− , SO 4 2− , H + , Mn 2+ , Al 3+ , Fe 2+ , NH 4 + , NO 3 − and N org were measured in nine deciduous forest plots with different tree species diversity in central Germany. Interception deposition and canopy exchange rates were calculated with a canopy budget model. The investigated forest plots were pure beech ( Fagus sylvatica L.) plots, three-species plots ( Fagus sylvatica , Tilia cordata Mill. or T. platyphyllos Scop. and Fraxinus excelsior L.) and five-species plots ( Fagus sylvatica , T. cordata or T. platyphyllos , Fraxinus excelsior , Acer platanoides L., A. pseudoplatanus L. or A. campestre L. and Carpinus betulus L.). The interception deposition of all ions was highest in pure beech plots and was negatively related to the Shannon index. The stand deposition of K + , Ca 2+ , Mg 2+ and PO 4 3− was higher in mixed species plots than in pure beech plots due to higher canopy leaching rates in the mixed species plots. The acid input to the canopy and to the soil was higher in pure beech plots than in mixed species plots. The high canopy leaching rates of Mn 2+ in pure beech plots indicated differences in soil properties between the plot types. Indeed, pH, effective cation exchange capacity and base saturation were lower in pure beech plots. This may have contributed to the lower leaching rates of K + , Ca 2+ and Mg 2+ compared to the mixed species plots. However, foliar analyses indicated differences in the ion status among the tree species, which may additionally have influenced canopy exchange. In conclusion, the nutrient input to the soil resulting from deposition and canopy leaching was higher in mixed species plots than in pure beech plots, whereas the acid input was highest in pure beech plots.
    Keywords: Broad-leaved deciduous forest ; Ion fluxes ; Mixed species forest ; Nutrient input ; Throughfall ; Shannon index
    ISSN: 0032-079X
    E-ISSN: 1573-5036
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Language: English
    In: Soil Biology and Biochemistry, August 2017, Vol.111, pp.166-175
    Description: Forest floor horizons contain significant total P stocks, but information on the contribution of microbial biomass P (P ) and on the controlling factors of this pool is limited. Slightly modified fumigation extraction procedures were used to investigate the stoichiometric relationships of P to microbial biomass C (C ) and microbial biomass N (N ) in the forest floor (L, F, H, and A horizons) at five sites, differing in P availability to trees, under adjacent spruce ( ) and beech ( ) stands. C , N , and P contents were higher in forest floors under beech than under spruce. Mean stocks of P and total P were roughly 27 and 100 kg ha in the forest floor, respectively, but did not differ between the tree species, due to an increased organic matter accumulation in the forest floor under spruce. This reveals the importance of forest floor horizons and microbial biomass turnover for P nutrition of trees in acidic soils with the humus form moder. C/P ratios declined from roughly 26 in L to 13 in F and H horizons, followed by an increase to roughly 17 in A horizons. The range of C/P ratios was small at all sites in relation to the wide SOC/total P ratios of the litter used as microbial substrate, indicating a relatively strict homeostatic regulation of the forest floor microbial, mainly fungal biomass stoichiometry.
    Keywords: Forest Floor ; Fumigation Extraction ; Bray-I Extractable P ; Soil Microbial Biomass ; Spruce ; Beech ; Agriculture ; Chemistry
    ISSN: 0038-0717
    E-ISSN: 1879-3428
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Language: English
    In: Geoderma, 01 September 2018, Vol.325, pp.162-171
    Description: Phosphorus (P) deficiency of beech ( L.) is widespread in Europe. However, it is difficult to determine at which sites trees are prone to P deficiency, since foliar analysis is the only tool widely accepted for assessing the P nutritional status of beech. Our central objective was to identify the main influencing factors on organic P in forest soils and to test its usefulness as a predictor of the foliar P content of beech. Our hypotheses were: (1) stocks of total organic P (TOP) and microbial biomass P (MBP) in the mineral soil are higher at mull than at moder/mor sites, (2) the TOP content and the soil organic carbon (SOC):TOP ratio are affected by soil mineralogical characteristics, such as oxalate-extractable iron and aluminum (Fe , Al ) and clay, (3) multiple regression models that include the TOP stock, soil mineralogical parameters and the humus form as predictors are useful to explain the variability of the foliar P content of beech. We sampled the mineral soils of 9 mull and 11 moder/mor sites at 0–50 cm depth and took foliar samples of beech trees in three subsequent years. In contrast to our hypothesis (1), we did not find significantly higher TOP or MBP stocks, but determined lower SOC:TOP ratios at mull compared to moder/mor sites. In line with our hypothesis (2), the TOP content was positively related to Fe , Al and clay contents, while the SOC:TOP ratio was negatively related to Fe , Al and clay contents, suggesting strong effects of clay, Al and Fe on the accumulation of TOP. In partial agreement with our hypothesis (3), the TOP stock was included as a positive and the clay content as a negative predictor in a multiple regression model of the foliar P content, suggesting decreasing bioavailability of TOP with increasing clay content. Across all sites, the model consisting of these two parameters better explained the foliar P content (R  = 0.60) than the stocks of Bray-II- (R  = 0.37) or Olsen-extractable P (R  = 0.53) as single predictors. Overall, our results suggest that the accumulation of TOP in forest mineral soils and its potential availability to beech are strongly affected by soil mineralogical parameters, which may be included in statistical models to improve the predictability of P availability to trees.
    Keywords: Agriculture
    ISSN: 0016-7061
    E-ISSN: 1872-6259
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Language: English
    In: Agricultural and Forest Meteorology, 2010, Vol.150(10), pp.1347-1357
    Description: ▶ Stand level models are able to simulate water budgets of mixed broad-leaved forest stands. ▶ Simulations are sensible to species specific functional traits. ▶ Species specific drought response has impact on the simulated soil water extraction during periods when available soil water is low. This modeling study used recent observations at a temperate broad-leaved forest in Central Germany to calculate water balances of a monoculture and mixed stands of , spp., spp., , and . To simulate soil water flow the modeling framework Expert-N was applied which combines models that describe the physiological and hydrological processes of the plant-soil system including models of evapotranspiration (Penman–Monteith equation), interception (revised Gash model) and soil water flow (Richards equation). Measurements of rainfall partitioning, volumetric soil water content, evapotranspiration and tree transpiration provided reliable data for the parameterization and the calibration of the model for three stands of different diversity levels. They allowed to include species specific physiological (transpiration rates, response to dry soil water conditions) and structural (leaf area dynamics) characteristics. During the 3-year long observation period 2005–2007 the mean yearly precipitation was 652 mm, the simulated mean yearly interception loss of the three observed forest stands was between 219 and 272 mm, the transpiration accounted for 197–225 mm, the forest floor evaporation for 96–104 mm, the drainage for 16–60 mm and the runoff for 13–50 mm. The calculations of the water balance were sensitive to the species composition of the forest and showed differences of rainfall interception and root water uptake between the stands. The applied stand-level model was able to simulate the water dynamics of the monospecific and mixed forest stands. It was shown that differences in drought tolerance of tree species can have a strong impact on the simulated soil water extraction during periods when available soil water is low.
    Keywords: Water Balances ; Mixed Stand ; Root Water Uptake ; Gash Interception Model ; Fagus Sylvatica ; Agriculture ; Meteorology & Climatology
    ISSN: 0168-1923
    E-ISSN: 1873-2240
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Language: English
    In: Plant and Soil, Nov, 2010, Vol.336(1-2), p.405
    Keywords: Biodiversity -- Analysis ; Rain -- Analysis ; Deciduous Forests -- Analysis
    ISSN: 0032-079X
    Source: Cengage Learning, Inc.
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Language: English
    In: Annals of Forest Science, 2015, Vol.72(7), pp.919-928
    Description: KEY MESSAGE : Foliar phosphorus concentrations have decreased in Europe during the last 20 years. High atmospheric nitrogen deposition and climate change might be responsible for this trend. Continued decrease in foliar P concentrations might lead to reduced growth and vitality of beech forests in Europe. CONTEXT : Increased forest soil acidification, atmospheric nitrogen deposition, and climate change have been shown to affect phosphorus nutrition of forest trees. Low foliar phosphorus levels and high nitrogen/phosphorus ratios have been observed in different European countries and have been related to reduced growth in forests. AIMS : We test the hypothesis that phosphorus concentrations of European beech (F. sylvatica L.) foliage are decreasing at the European scale. METHODS : Foliar phosphorus concentrations in beech were monitored on the basis of the “International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests.” Here, data from 12 European countries, comprising 79 plots and a 20-year sampling period (1991–2010), were evaluated. RESULTS : Foliar phosphorus concentrations ranged from 0.81 to 1.66 mg g⁻¹ dw (plot median of the 20-year sampling period). On 22 % of the plots, phosphorus concentrations were in the deficiency range of beech (Mellert and Göttlein 2012). On 62 % of the plots, the nitrogen/phosphorus ratio was above 18.9, which is considered to be disharmonious for beech. In addition, foliar phosphorus concentrations were significantly decreasing by, on average, 13 % from 1.31 to 1.14 mg g⁻¹ in Europe (p 〈 0.001). CONCLUSION : Our results show that phosphorus nutrition of beech is impaired in Europe. Possible drivers of this development might be high atmospheric nitrogen deposition and climate change. Continued decrease in foliar phosphorus concentrations, eventually attaining phosphorus deficiency levels, might lead to reduced growth and vitality of beech forests in Europe. ; p. 919-928.
    Keywords: Forest foliar nutrition ; Temporal trend ; Phosphorus deficiency ; Forest monitoring ; N/P ratio
    ISSN: 1286-4560
    E-ISSN: 1297-966X
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Language: English
    In: Journal of Microbiological Methods, September 2016, Vol.128, pp.66-68
    Description: In an inter-laboratory trial, gaseous (“CFE”) and liquid fumigation (“Resin”) based methods for measuring microbial phosphorus (P ) were compared, based on the analysis of soil samples from five forests, which differ in their P stocks. Both methods reliably detected the same P gradient in the different soils. However, when the individual recovery rates of spiked P were taken into account, the “CFE” based methods consistently generated higher P values (factor 2) compared to the “Resin” based approaches.
    Keywords: Microbial Phosphorus ; Microbial Biomass ; Gaseous Fumigation ; Liquid Fumigation ; Forest Soils ; Biology
    ISSN: 0167-7012
    E-ISSN: 1872-8359
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Language: English
    Keywords: 500 Naturwissenschaften Allgemein ; Mathematics And Computer Science ; Laubwald ; Gemäßigte Zone ; Fagus Sylvatica ; Biodiversität ; Boden ; Phosphor ; Sorption ; Deposition ; Kronenraumaustausch ; Forest ; Temperate ; Broad-Leaved ; Deciduous ; Fagus Sylvatica ; Biodiversity ; Soil ; Phosphorus ; Turnover ; Sorption ; Deposition ; Canopy Exchange ; 48.32 ; Ypa 000: Forstliche Bodenkunde
    Source: Networked Digital Library of Theses and Dissertations
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
Close ⊗
This website uses cookies and the analysis tool Matomo. Further information can be found on the KOBV privacy pages