Báo cáo lâm nghiệp: "Carbon stock changes in a peaty gley soil profile after afforestation with Sitka spruce (Picea sitchensis)" potx
Báo cáo lâm nghiệp: "Carbon stock changes in a peaty gley soil profile after afforestation with Sitka spruce (Picea sitchensis)" potx
... shallow peatlands (mainly peaty gleys) have been planted with coniferous forests, mostly Sitka spruce (Picea sitchensis (Bong.) Carr) [3]. Afforestation on peaty soils may cause an increase in ... (stand agesbetween 2 and 34 years old) in Florida. Afforestation on natural grassland, clearfelling and replant-ing also caused changes in the soil bulk densities, mainly in theorganic layer. ... 873–880© INRA, EDP Sciences, 2005DOI: 10.1051/forest:2005078Original articleCarbon stock changes in a peaty gley soil profile after afforestation with Sitka spruce (Picea sitchensis)Argyro ZERVA,...
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Báo cáo lâm nghiệp: "Evaluation of changes in the landscape management and its influence on animal migration in the vicinity of the D1 motorway in Central Bohemia" ppsx
... of diverse landscapes? Fenina, 178: 55–80.W T. (1998): Landscape structure as indicators for sustainable land use? A case study in alpine and lowland landscapes of Austria. In: D J.W., ... application, the project in- volves mapping both the landscape permeability re-garding migration and landscape structure changes in an area in uenced by a linear construction in the form of a ... issue. A report known as COST 341 was established that presents informa-Evaluation of changes in the landscape management and its in uence on animal migration in the vicinity of the D1 motorway...
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Báo cáo lâm nghiệp:" Dynamics of litterfall in a chronosequence of Douglas-fir (Pseudotsuga menziesii Franco) stands in the Beaujolais mounts (France)" potx
... taken upfrom the whole available soil pool [27]. It is a natural processacting against soil acidification. In strongly acidic soils, or in soils without any weatherable minerals such as a large ... per year andmean annual temperature was 7 °C [19].2.2. Soil characteristicsSoils were developed on a Visean compact volcanic tuff rich in alkaline and earth alkaline elements i.e. 2% CaO and ... the soil exchangeable pool. In acid soils with low amounts of Ca-bearingminerals as in the present site [12], since no secondary Ca-mineralsare stable, released Ca is absorbed by vegetation...
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Báo cáo lâm nghiệp: " Mating system parameters in a natural population of Abies borisii regis Mattfeld" pdf
... bal-samea). Can J Bot 59, 1285-1291Neale DB, Adams WT (1985) Allozyme and mating-system variation in balsam fir (Abies balsamea)across a continuous elevational transect. ... 1989); A lasiocarpa,tm = 0.89 (Shea, 1987); A balsamea, tm =0.89 (Neale and Adams, 1985). This is in good concordance with phenological andbiological observations made for ... in particular. As thisspecies and the supposed-to-be related Abiescephalonica are used in breeding programs in southern France, it is important to haveaccurate estimates...
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Báo cáo lâm nghiệp: "Growing stock-based assessment of the carbon stock in the Belgian forest biomass" ppsx
... targets by increasingbiological carbon (C) sequestration in terrestrial ecosystems, asindicated in Art. 3.3 (Afforestation, Reforestation and Defor-estation) and Art. 3.4 (Additional human-induced ... Groen (AB&G), Boskartering 2004, available athttp://www.mina.vlaanderen.be/wiedoetwat/aminal/taken/bosengroen/frmsetbos.htm [16/12/2004].[3] Afdeling Bos & Groen (AB&G), Bosreservaten ... published values. A similar nationwidestudy is going on in Australia, where the aim is to establish a database with wood density values for all relevant tree species[23]. In the Australian study,...
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Báo cáo lâm nghiệp: "Carbon partitioning: fructose 2,6-bisphosphate content as an indicator of specific changes in carbohydrate metabolism in needles from class II spruce trees" pot
... Karlsruhe Ber. 163-171 1Hampp R., Einig W., Keil R. & Fink S. (1989)Energy status and carbon partitioning in spruce: specific changes in relation to needle age anddegree ... precede anyvisible signs of damage. The determina-tion of F26BP levels in needles couldconstitute an early indicator of affectedcarbon allocation.AcknowledgmentsHelp in sample ... This metabolicsituation should thus be indicative ofincreased partitioning of carbon intosucrose (starch decreases) and this situa-tion is obviously continued during summer.Class...
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Báo cáo lâm nghiệp: "Carbon accumulation in Finland’s forests 1922–2004 – an estimate obtained by combination of forest inventory data with modelling of biomass, litter and soil" potx
... carbon balance In addition to the trends towards increase, the annual changes in the biomass, litter and soil carbon balance werehighly variable. Such inter annual variability is important on a site ... balance based on for-est inventory data.Uncertainty in the estimates obtained using this method canbe assessed by means of Monte Carlo simulations that accountfor uncertainty of input data ... found high annual variation in the carbonbalance of both biomass and litter and soil. This indicates thatbetween year variation in the carbon balance of forests is moreremarkable than currently...
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Báo cáo lâm nghiệp: "Carbon pool and substitution effects of an increased use of wood in buildings in Switzerland: first estimates" pdf
... LCA, all life cycle stages of the competing products fromraw material extraction, production to their use phase and disposal areaccounted for and assessed, including energy generation and trans-ports.The ... fact be rather low. This effect is linked to a far larger decreaseof the standing volume of trees (and thus carbon) in the forestsand of soil carbon because of the harvesting, an effect that ... et al.1. INTRODUCTIONWood as a CO2-neutral natural resource and energy carrierplays an important role in the discussion on the mitigation ofclimate change. Long-living wood products in particular...
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Báo cáo lâm nghiệp:"Net effect of competing vegetation on selected environmental conditions and performance of four spruce seedling stock sizes after eight years in Québec (Canada)" ppsx
... Given that % PAR was measured each year on site 3, a profile analysis (ANOVAR) was also performed. A similar ANO-VAR was used to examine competing vegetation effects on meandaily soil temperature ... studies with black spruce (Picea mariana (Mill.) B.S.P.) and white spruce (Picea glauca (Moench) Voss) large seedling stock, two com-monly planted species across Canada, specifically examinedtransplant ... from SAS [18]. The quantity of light (% PAR)reaching the mid-upper crown of seedlings with competition at site 1was analyzed using an ANOVA after angular transformation of thedata. To evaluate...
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Báo cáo lâm nghiệp: "Carbon and nitrogen winter storage and remobilisation during seasonal flush growth in two-year-old cork oak (Quercus suber L.) saplings" pptx
... ofevery individual part. Partitioning of winter N and total C and N werecalculated with a similar procedure.2.4. Non-structural carbohydrate analysesSamples of leaves, stem, lateral branches and ... year and second year leaves, both RSAC and RSANdecrease from January to August in a parallel way and the ratioof the two was always constant. The same was true for coarseand fine roots, despite ... observed that C and N reallocation proceeded in a par-allel way as the ratio RSAC/RSAN was practically constantalong the experiment. Similarly, the partitioning of winter Cand N and the partitioning...
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