Báo cáo lâm nghiệp: "Soil detritivore macro-invertebrate assemblages throughout a managed beech rotation" docx

... co-inertia analysis was thenrun on the CA of faunal data and the PCA of environmental variablesto (i) isolate new axes in both multidimensional spaces and (ii) create a factorial plane which ... climateis temperate oceanic with a mean annual temperature of +10◦Cand a mean annual precipitation of 800 mm [19]. All stands were locatedon a plateau with more than 80 cm of loess as parent ... 251–271.Soil detritivore macro-invertebrate assemblages 225Figure 3. Results of Co-Inertia Analysis between density and environmental data sets (ﬁrst factorial plane): (a) eigenvalue diagram; (b)...

Báo cáo lâm nghiệp: "Soil compaction caused by 450C Timber Jack wheeled skidder (Shefarood forest, northern Iran)" doc

... machinery passes and average amount of logs being carried at each pass, the carrying potential of each skidding trail can be estimated. Hence the amount of logs that can be carried along a ... eﬃciency are increased, but at the same time maintaining the natural balance of forest by not en-dangering the soil, plant and animal life.On this basis, with the disappearance of traditional harvesting ... Caspian Sea in a narrow strip which has special ecological and topographical conditions and also has exclusive plant species diversity.In recent years the demand for wood has increased because...

Báo cáo lâm nghiệp: "Soil characteristics under selected broadleaved tree species in East Norwa" docx

... total nitrogen content, pH in water, exchangeable acidity, exchangeable cations and anions (Mg, Ca, Mn, Al, S, Fe, B, P and K), cation exchange capacity and base saturation. No regular patterns ... physical and chemical soil properties, their vertical charac-teristics and quantitative variations, are presented for 36 broadleaved stands in East Norway. MATERIALS AND METHODSe study was ... compliance with the stratigraphy of particular soil units.e data were statistically treated by Shapiro-Wilk test of normality and analysis of variance. Conﬁ-dence intervals for t-scores means...

Báo cáo lâm nghiệp: "Soil environment and nutrient status of Norway spruce (Picea abies [L.] Karst.) underplantings in conditions of the 8th FAZ in the Hrubý Jeseník Mts" potx

... soil proﬁ les applying the FAO WRB in-ternational classiﬁ cation. Evaluation of underplanting damage e degree of damage to underplantings was evaluated on each research plot, based on the ... when a negative correlation was calculated between the foliar N and P content and the degree of damage to evaluated underplantings caused by nutrient deﬁ ciency (Tables 5 and 6). Damage to ... exchange capacity, V – base sat-uration) according to Kappen (Z et al. 1997), H+ concentrations on the principle of pH double measurement (A , E 1990) and available mineral nutrients...

Báo cáo lâm nghiệp: " Soil and plant communities development and ecological effectiveness of reclamation on a sand mine cast" ppt

... the Bytom Basin. In general, its climate can be characterized by an annual average air tem-perature of 8°C and annual average precipitation of 700 mm. e deposits are genetically related to the ... number of samples; *signiﬁcant at the 0.05 probability levelcast mine were abandoned and natural succession was allowed to take place. The age of reclaimed research plots was calculated starting ... reclaimed areas: Moenes uniﬂora and Poa nemoralis, whereas Vaccinium vitis-idea, Hieracium sabaudum, Hieracium murorum, Betula pubescens Table 4. Shannon diversity index 'H' and abundance...

Báo cáo lâm nghiệp: "Soil-forming effect of Grand fir (Abies grandis [Dougl. ex D. Don] Lindl.)" pot

... 4.57 ab 3.88 abc 27.02 a 24.81 a 51.83 a 51.82 a SM F2 4.17 ab 3.57 ab 27.78 a 44.94 bc 72.72 ab 38.28 abSM H 3.76 ab 3.03 ab 12.4 a 46.87 ab 59.27 ab 21.02 abSM Ah 3.56 ab 2.98 ab 2.68 a 15.48 ... standard analytical methods, yearly tested.Table 1. Accumulation of surface humus and amount of ﬁxed macronutrients in particular standsStand HorizonDry mass (kg/ha)N P K Ca Mg(%) (kg/ha) (%) ... sylvatica L.), Norway spruce (Picea abies [L.] Karst.) and oak (Quercus spp. L.) stands (all of pole stage). e site is characterized as 4P1 – acid oak-ﬁr site with Luzula pilosa, the geological...

Báo cáo lâm nghiệp: "Soil carbon dioxide eﬄux in pure and mixed stands of oak and beech" potx

... moisture treatment under oak could be an artefact asso-ciated with the large spatial variability and with the fact thatFFR was obtained by diﬀerence (TSR-MSR). Since TSR wasnot signiﬁcantly a ected ... the main varying factor. The beech and the mixed stands arelocated side by side while the oak plot is 600 m away from them.Soil homogeneity was evaluated on the basis of a detailed character-ization ... experimental plots in ten triangular areas delimitedby three adjacent trees. Three sampling areas were located in each ofthe quasi-pure stands dominated either by oak or beech and four werelocated...

Báo cáo lâm nghiệp: " Soil and tree water relations in mature oak stands of northern Germany differing in the degree of decline" pdf

... -0.87and -0.94 MPa in a healthy and a damagedoak, respectively, at predawn, and -2.67and -2.54 MPa in a healthy and a damagedoak, respectively, in the afternoon (gravita-tional ... leaves. Meanvalues were calculated for each branch. For com-parison of healthy and damaged oaks, a meanvalue, from the mean values of the respectivebranches, was calculated ... plantation of sessileoak for edaphic (Sprakensehl) or climatic (Hakel)reasons, respectively. All stands originated fromnatural regeneration. At each site, two adjacentstands...

Báo cáo lâm nghiệp: "Assessment of some forest characteristics employing ikonos satellite data" docx

... forest area of Central Slovakia. Original digital data as well as enhanced digital images were used to estimate some forest variables. Image enhancement approaches employing topographic normalization, ... normalization, PCA analysis and diﬀer-ent vegetation indices are a very important part of data processing. Apart from spectral characteristics, texture as an additional variable was utilized. In ... it makes around the globe each day.Diﬀerent commercial and governmental organiza-tions utilized IKONOS data to view, map, measure, monitor and manage different activities and ap-plications....

Báo cáo lâm nghiệp: "Quality of wood in the stands of poplar clones" docx

... than class A1 and it starts al-ready with minimal diameter of logs 20 cm. Quality classes C1.1–C1.3 represent good quality, average quality and lower quality saw logs, and all have minimal ... evaluated part of stems.Damage to stems was evaluated according to ex-ternal visible signs. e most frequent were decays after mechanical damage to butts and buttresses, but in some localities ... tree assortment tables. Mean quadratic errors indicate frameworks of the model accuracy in the case of their applica-tion to one stand. Provided that they are used for larger sets, the accuracy...

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