Báo cáo lâm nghiệp: "Litter production in a Quercus suber forest of Montseny (NE Spain) and its relationship to meteorological conditions" pptx

... analyse interannual and seasonal variation of litterfall in a cork oak forest of the Montseny massif (Catalonia, north-eastern Iberian Peninsula) and its relationship with meteorological data.2. ... 89–98.[19] Martín A. , Gallardo J.F., Santa Regina I., Aboveground litter production and bioelement potential return in an evergreen oak (Quercus rotundifolia) woodland near Salamanca (Spain), Ann. Sci.For. ... cor-related (because most peak in May–July and October–December), interannual co-variation was only signiﬁcant forleaf/twigs and leaf/catkins (both had maximum falls in spring1996 and spring...

Báo cáo lâm nghiệp: "Available nitrogen in the surface mineral layer of Serbian forest soils" docx

... subtraction of the initial content of available mineral N (for the anaerobic incubation of NH4+-N content); Ninitial‒ initial content of available mineral N (for the anaerobic incubation ... (1982) as a standard of poten-tially available N. Also, our results indicate a high dependence of the supplies of available N in the surface mineral layer of forest soils on total organic C ... the in- dices obtained by the process of anaerobic incuba-tion cannot be used to assess mineralizing nitrogen in clearings and arable soils. We also obtained by anaerobic incubation the values...

Báo cáo lâm nghiệp: " Decay resistance in Dicorynia guianensis Amsh.: analysis of inter-tree and intra-tree variability and relations with wood colour" pptx

... 10.1051 /forest: 2004030Original articleDecay resistance in Dicorynia guianensis Amsh.: analysis of inter-tree and intra-tree variability and relations with wood colour Nadine AMUSANT a *, Jacques BEAUCHENEb, ... Amusant et al.temperate species. The intra-tree variation in durability in Dicory-nia guianensis explains a substantial part of the variability. Thelarge radial variation in resistance to decay shown ... colour and durability, and usecolour as an indicator in classifying the biological resistance of Dicorynia guianensis. * Corresponding author: nadine.amusant@cirad.fr380 N. Amusant et al.[43]...

Báo cáo lâm nghiệp: "Sexual reproduction in Populus II. Information molecules of the pollen grain" pptx

... of the S (self-incompatibility) gene.They are of protein and glycoprotein na-ture (Nasrallah and Nasrallah, 1986;Gaude and Dumas, 1987). On the otherhand, no data are ... withbovine serum albumin as a standard. Samplescontaining 10 0 pg of protein were loaded on anSOS-gel, according to Laemmli’s procedure(Laemmli, 1970). After running, proteins ... and P. alba branches wereobtained from the INRA Forestry Station in Orl6ans (France). Pollen was collected and stored in closed vials at -18°C.For cytochemistry, ultrathin...

Báo cáo lâm nghiệp:"Relationships between soil factors, Quercus robur health, Collybia fusipes root infection and Phytophthora presence" doc

... 265282.[10] Delatour C., Phytophthoras and Oaks in Europe, in: Proceedings of the 2nd International meeting on Phytophthoras in Forest and Wild-land Ecosystems, Perth and Albany, Australia (in press).[11] ... mycelial fans at the cambium. Armillaria was alsodetected on three other oaks in Mersuay, three oaks in Filain and two in Ainvelle. In these cases Armillaria was present on a minority of roots, inducing ... frequent: Ainvelle, Mersuay and Filain. In Ainvelle and Mersuay, located on alluvial forests, the soil consisted in a coarsetextured layer of varying thickness covering a layer of gravel. Fewroots...

Báo cáo lâm nghiệp: "old hardiness as a factor for assessing the potential distribution of the Japanese pine sawyer Monochamus alternatus (Coleoptera: Cerambycidae) in China" pdf

... i.e. M. sutor and M. saltuarirs in northeastern China, M. galloprovinialis in the whole of Europe except for Scandinavia and Siberia, and M. scutellatus scutellatus in Alaska and Canada [6, 18, ... history, and the overwinter-ing larvae had signiﬁcantly stronger cold tolerance compared456 Ma et al.[21] Song Y.S., Zang X.Q., Analysis of adaptation and quarantine coun-termeasure to Bursaphelenchus ... S a ,LeK a * a State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences,Beijing 100080, ChinabDepartment of Entomology, Shanxi Agricultural...

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

... increase, equal to an average of 3.3 Tg/year, was due to both a higher mean amount of carbon per forested area in forests remaining as forests and an expanded forested area (seeFig. 1). Carbon accumulated ... increased by 29% and the forest area expandedCarbon sink of Finland’s forests 695stocks of biomass and soils as a consequence of natural dis-turbances was demonstrated earlier by Kurz and Apps ... removals of carbon as a result of Rh, the soil and litter carbon balance in Finland’sforests was a ected by changes in land use. Conversion of other types of land to forest introduced carbon to...

Báo cáo lâm nghiệp: "Nutrient dynamics in decomposing needles of Pinus luchuensis after typhoon disturbance in a subtropical environment" pps

... [14]. Luchu pine was introduced to the Bonin Islands and some national forests in Kyushu, and was also introduced to Taiwan [39]. In Okinawa, Luchu pine* Corresponding author: xnxu61@yahoo.com.cnis ... The area is characterized by a subtropical climate and abun-dant rainfall throughout the year. Annual mean temperature is about21.8◦C. Annual mean rainfall is 2680 mm over last 30 years (Ex-perimental ... release), while Al and Fe showed an increasephase (net immobilization), and P, S, and Mn demonstrated anincrease-decrease phase (initially net immobilization and thennet release) over the 3-yr...

Báo cáo lâm nghiệp: "Designing decision support tools for Mediterranean forest ecosystems management: a case study in Portugal" pptx

... T., Pascual L., Trasobares A. , Examining alter-native landscape metrics in ecological forest landscape planning: a case for capercaillie in Catalonia, Investigaciones Agrarias, Sist.Recur. For. ... inventorydata to estimate the “number of years since debarking” for all trees in all land units. Afterwards it simulates land unit debarking cycles start-ing in the year when the first debarking ... inter-polation. Afterwards, debarking operations are simulated according to a simple rule. Trees in each land unit are sorted in descending orderaccording to the “number of years since debarking”, and debarked...

Báo cáo lâm nghiệp: " Predator/prey ratios: a measure of bark-beetle population status influenced by stand composition in different French stands after the 1999 storms" pps

... pines) than in GU and 2L, and allratios tend to increase with years (two-way ANOVA using arc-sine-transformed ratios of individual traps; there was no signi-ficant interaction of site and years). ... (SHDI) and catches of T. formicarius and of I. typographus; (b) arcsine-transfor-med proportion of pines (PROP_PIN) and catches of T. formicarius and of I. typographus; in a 500 m radius.Landscape ... comparison of predator/prey ratios between sites and years wascarried out using a two-way analysis of variance of the angular trans-form of the predator/prey ratio, with the site, year, and...

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