Báo cáo lâm nghiệp: "Precipitation partitioning and related nutrient fluxes in a subtropical forest in Okinawa, Japan" ppt
Báo cáo lâm nghiệp: "Precipitation partitioning and related nutrient fluxes in a subtropical forest in Okinawa, Japan" ppt
... 42].Okinawa Island, especially in its northern part, is mainlycovered by evergreen broad-leaved native forest dominated byCastanopsis sieboldii Hatusima ex Yamazaki & Mashiba(Fagaceae) and ... 245–252© INRA, EDP Sciences, 2005DOI: 10.1051 /forest: 2005016Original articlePrecipitation partitioning and related nutrient fluxes in a subtropical forest in Okinawa, JapanXiaoniu XU a, b,c*, Qin ... precip-itation and runoff at 47 forested sites in the whole of Japan,Iwatsubo et al. [20] found that concentrations of Cl and Na in rainfall and runoff were significantly and negatively correlatedto...
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Báo cáo lâm nghiệp: " Humus conditions and stand characteristics of artificially established young stands in the process of the transformation of spruce monocultures" pdf
... reactionBoth actual (in H2O) and exchangeable (in nKCl) pH was determined. In the surface humus, values of both actual and exchangeable pH decrease with increasing depth (Figs. 2 and 3) in ... carried out in the Sta-tistics Program (Stat-Soft Inc., Tulsa, USA). Sin-gle-factor analysis ANOVA was used and for the Table 2. Stand characteristics and statistical differences in forest floor ... NEUBAUER CH., GLATZEL G., 2002. Factors controlling soil carbon and nitrogen stores in pure stands of Norway spruce (Picea abies) and mixed species stands in Austria. Forest Ecology and Management,...
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Báo cáo lâm nghiệp: "Genetic variability and divergence among Italian populations of common ash (Fraxinus excelsior L.)" ppt
... (Fagarè and Spazzacamini) and 0.104 (Campigna and Valle Tanaro) (data not shown). Al-most all pairwise FSTvalues were significantly greater thanzero, confirming the presence of a slight, although ... Italian and Bulgarianpopulations is remarkable, and palaeontological data supportthe hypothesis that southeastern Europe has been an impor-tant refuge for plant species, including common ash, ... ecological characteristicsof the areas of the study, such as vegetational and phytogeo-graphical data, is also needed.2. MATERIALS AND METHODS2.1. Ecological dataPedo-climatic characteristics...
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Báo cáo lâm nghiệp: "Growth, allocation and leaf gas exchanges of hybrid poplar plants in their establishment phase on previously forested sites: effect of different vegetation" docx
... 4.52)acbcabaab aaaaaa2.7. Data analysisThe data were analysed using an analysis of variance (ANOVA)technique for a randomized complete block design. When treatmentdifferences occurred, a Bonferroni ... poplar biomass partitioning Variations in biomass partitioning were mainly associatedto tree height (Tab. II). In the 2YS, plants decreased their allo-cation to roots and rapidly increase branching ... plantsowing) on hybrid poplar (P. maximowiczii × bal samifera) growth, biomass allocation and leaf carbon assimilation was investigated in two plantations(1- and 2-year-old) established in...
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Báo cáo lâm nghiệp: "Modelling height and diameter growth of dominant cork oak trees in Spain" ppt
... [24].Table II. Mean, standard deviation and range of the main characteristics of the sample trees subjected to stem analysis in the two studied areas(CAT and PNLA).Area n Variable Minimum Maximum ... METHODS2.1. DataStem analysis data were obtained from two different cork oak areas in Spain (Fig. 1): the Natural Park of “Los Alcornocales” in the South and Catalonia in the North-East. The characteristics ... production [27, 41].Cork oak forests are mainly found in Catalonia and the southof Andalusia. These forests have a higher density and a sub-stantial understory of shrubs such as Arbutus unedo, Juniperussp.,...
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Báo cáo lâm nghiệp: "Biomass increment and carbon balance of ash (Fraxinus excelsior) trees in an experimental stand in northeastern France" docx
... comparable diameter in anexperimental stand (Hesse) in northeastern France [24].Biomass increment and carbon balance of ash 579layer to total foliage biomass was calculated for each level using ... article Biomass increment and carbon balance of ash (Fraxinus excelsior) trees in an experimental stand in northeastern FranceNoël LE GOFF a *, André GRANIERb, Jean-Marc OTTORINI a , Marianne PEIFFERb a ... Then, the relative biomass increment of each increment sample wascalculated as the ratio of the basal area increment to the basal area –the cross sectional surface areas being calculated from...
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Báo cáo lâm nghiệp: "Seasonal variations and acclimation potential of the thermostability of photochemistry in four Mediterranean conifers" doc
... moun-tain (P. nigra and C. atlantica) and coastal species (P. halepensis and C. sempervirens). C. atlantica, a mountain species in manyNorth African and Southern France locations, displayed con-sistently ... Jouinau produced and maintained the plant material at INRAAvignon, and Jean Marie Gioria at INRA Nancy. Patrick Gross (INRANancy) designed the device used to measure the critical temperature.REFERENCES[1] ... larger in Cedrus atlanticathan in the three other species. Tc also displayed a large plas-ticity, increasing during summer and in response to increasingambient temperature. Taking into account...
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Báo cáo lâm nghiệp: "Neuroptera, Raphidioptera and Mecoptera assemblages inhabiting young spruce (Picea abies) forests: dominance structure and seasonal activity patterns" docx
... installed in small forest clearings, minimally 30 m inwards the forest. e forest clearings are covered mainly by rough reedgrass (Calamagrostis arundinacea) and shrubs like bird cherry (Padus racemosa) ... humulinus, Dichrostigma flavipes, Phaeostigma notata, Panorpa communis and Panorpa germanica) is discussed.Keywords: Malaise traps; Neuroptera; Raphidioptera; Mecoptera; seasonal flight activity; ... Chrysoperla carnea s.l. was abundant only in these localities. Species Nineta flava, Nineta pallida, Chrysotropia ciliata, Chrysopa pallens, Hemerobius stigma, Wesmaelius nervosus, Drepanepteryx pha-laenoides,...
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Báo cáo lâm nghiệp: "Production potential and ecological stability of mixed forest stands in uplands – VI. A beech/larch stand on a mesotrophic site of the Křtiny Training Forest Enterprise" pot
... dominant stand and the volume of dead trees is not included in the calculation. Stand density was calcu-lated according to standard mensurational practice from the ratio of actual basal area ... potential and stability of mixed forest stands in uplands. A mixed beech/larch stand that was established by natural regeneration in 1934 to 1942 is assessed. e stand is situated at an altitude ... m2/ha to 12.559 m2/ha).An increase in basal area (however, not substan-tial in absolute values) was also noted in oak and birch. In spruce and hornbeam, these values even decreased due...
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Báo cáo lâm nghiệp: "Occurrence, biology and harmfulness of Galerucella lineola (F.) (Coleoptera, Chrysomelidae)" pps
... harmfulness. An “alder” biological form was studied in Alnus glutinosa and A. incana mainly in Polnička Forest District (Žďár region) and a “willow” form in Salix viminalis, S. triandra and S. caprea in ... bud-ding and the time of beetle invasion or due to heavy Table 1. Abundance of G. lineola imagoes at sweeping on A. glutinosa and A. incana (Polnička, 1996). e mean leaf area of A. glutinosa damaged ... damaged by imagoes and the mean number of laid eggs in the laboratory. An asterisk* indicates 28.6% parasitization of imagoes by tachinas Medina collaris (Fall.). In rearings free of tachinas,...
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