Báo cáo lâm nghiệp: " An estimation of willingness to pay for asparagus (Asparagus racemosus Willd.) collectors in Makawanpur District, Nepal" ppsx

Báo cáo lâm nghiệp: "An economic aspect of conversion of Scots pine (Pinus sylvestris L.) stands in the Polish Lowland" docx

... assort-ments with the potential income possible to obtain An economic aspect of conversion of Scots pine (Pinus sylvestris L.) stands in the Polish LowlandA. W1, R. J1, G. R1, ... beginning has been ﬁxed on the basis of the relation of the value of wood increment from the stands which need conversion to the value of average wood increment from stands con-formable to the ... changes in the mean volume of Scots pine stands growing at unsuitable sites and oak stands growing at appropriate sites follow diﬀerent pathways.– e increment rate of the mean value of pine stands...

Báo cáo lâm nghiệp: "Earthworms (Lumbricidae) of an air-polluted area aﬀected by ameliorative liming" pdf

... 210–218JOURNAL OF FOREST SCIENCE, 57, 2011 (5): 210–218Earthworms (Lumbricidae) of an air-polluted area aﬀ ected by ameliorative limingE. K, L. M Faculty of Forestry and Wood Technology, ... carbon and nitrogen, exchangeable soil sorption and degree of base saturation of the sorption complex and avail-able nutrients P, Mg, Kand Ca) were determined for monitored stands in the H and ... monitored groups of forest stands regardless of the time and repetition of liming to char-acterize the limed area, we can draw the general con-clusion that the abundance of juvenile earthworms...

Báo cáo lâm nghiệp: " An estimation of willingness to pay for asparagus (Asparagus racemosus Willd.) collectors in Makawanpur District, Nepal" ppsx

... t in 1998/99 and 74.9 t in 2000/01 (DFO 2002). Of the total amount of asparagus exported from Nepal, the An estimation of willingness to pay for asparagus (Asparagus racemosus Willd.) collectors ... Pre-testing of questionnaire and its ﬁnal set-ting. Before formulating the exact wording of the question, two meetings of collectors were organized in February 2002; one for the Tamang caste and ... kg4.Selection of collectors for elicitation of WTPe majority of asparagus collectors in Makawan-pur district, who lived adjacent to the RCNP, belong to the Tamang and Praja castes. Both of them...

Báo cáo lâm nghiệp: "An analysis of ecophysiological responses to drought in American Chestnut" ppt

... theundocumented ecophysiological responses of pure American chestnut to water stress, and the approaching reintroduction of resistant hybrids, the timing is right to assess the ability of thespecies to survive ... eﬃciency of American chestnut seedlings increases in response to water stress regard-less of the environment under which the seedlings were grown.This increase in water use eﬃciency, found in the ... opposed to xeric sites, prompting theinvestigation of the role of xeric conditions in natural hypovir-ulence biocontrol of the blight fungus [16]. Interestingly, postblight populations of American...

Báo cáo lâm nghiệp: "Uncertainty estimation of biomass expansion factors for Norway spruce in the Czech Republic" pot

... the best way to increase the preci-sion of BEFs would be the reduction in error of the biomass and volume models (Fig. 5). Examining the sensitivity in un-certainty of the BEF by ignoring the ... age-classes (reﬂecting the available format of sourcedata) and as a single value and to analyse the associated BEFuncertainty for Norway spruce stands in the conditions of the Czech Republic.2. ... sitesdespite the varying values for stand age and stocking densities. The decreasing rate of the BEF as a function of age wassteeper in the Czech Republic than in Finland according toLehtonen...

Báo cáo lâm nghiệp: "Eﬀects of soil mechanical treatments combined with bramble and bracken control on the restoration of degraded understory in an ancient beech forest" pptx

... dependent on the initial vegetation type and on soil seed bank composi-tion. We therefore encourage additional experiments in differ-ent stand and soil types in order to establish the generality of these ... on the considered soil parameters. Bothdisc and rotary ploughing induced an overall lowering of soil nutrient index and soil compaction, but different or mitigated in uences on soil moisture and ... implements in an ancient beech forest in central Belgium. The purpose of these investigationswas twofold: (1) to explore whether tillage has a long-lastingeffect on soil compaction and soil moisture,...

Báo cáo lâm nghiệp: "Eﬀect of single Quercus ilex trees upon spatial and seasonal changes in soil water content in dehesas of central western Spain" potx

... 355c INRA, EDP Sciences, 2007DOI: 10.1051/forest:2007012Original articleEﬀect of single Quercus ilex trees upon spatial and seasonal changes in soil water content in dehesas of central western ... spring rainfall decreased soil water content quickly until June or July. Soil water content remained nearlyconstant during the rest of the summer. Each year, minimum and maximum soil water content ... patterns of soil water content in dehesas in order to characterise the pattern of wa-ter consumption of trees, particularly during the summer, and (iii) to determine the nature of tree-grass interactions...

Báo cáo lâm nghiệp: "An integrated analysis of 33 Eucalyptus trials linking the onset of competition-induced tree growth suppression with management, physiographic and climatic factors" pptx

... 10.1051/forest:2007036Original articleAn integrated analysis of 33 Eucalyptus trials linking the onset of competition-induced tree growth suppression with management, physiographic and climatic factorsKeith M. ... burning) and the interaction between these two factors were signiﬁcantly related to the timing of tree growth suppression. Regardless of the method of site preparation, the onset of competition-induced ... the eﬀect of site preparation on the rate of seed germina-tion (Fig. 1). At lower altitudes, regardless of whether the sitewas burned or not, the growth of the vegetation was vigorous and competition-induced...

Báo cáo lâm nghiệp: "Eﬀect of an oil heat treatment on the leachability and biological resistance of boric acid impregnated wood" pps

... 10.1051/forest:2007046Original articleEﬀect of an oil heat treatment on the leachability and biological resistance of boric acid impregnated wood*Florent Lyona**, Marie-France Thevenonb, Won-Joung Hwa n gc,YujiImamurac,JosephGrila,AntonioPizzidaLaboratory ... application of an oil layer of about 1.5 mm thick on tangential and radial surfaces. Inner part of wood pieces is free from oil. Oil heat treatment consisted in a double dipping of one hour each;ﬁrst ... impact of these combinations isevaluated for boron retention and biological resistance to ter-mites and decay fungi.2. MATERIALS AND METHODS2.1. Wood material and chemicalsSapwood specimens of...

Báo cáo lâm nghiệp: "Ecophysiological responses of Mediterranean pines to simulated sea aerosol polluted with an anionic surfactant: prospects for biomonitoring" pptx

... 10.1051/forest:2005030Original articleEcophysiological responses of Mediterranean pines to simulated sea aerosol polluted with an anionic surfactant: prospects for biomonitoringAndrea RETTORIa,c, ... treatments with sea water including an anionic surfactant, 5 to 500 mg/L dioctyl sodium sulphosuccinate.Despite the reduction of surfactant in sea aerosol over the past 20 years, Mediterranean pinewoods ... speciesTable III. Significance levels of two- and three-ways analyses of variance of the effects of treatments (deionized water; sea water; and 5 to 500 mg/Lsurfactant in sea water), pine species...

Báo cáo lâm nghiệp: "Habitat distribution of dipterocarp species in the Leyte Cordillera: an indicator for species – site suitability in local reforestation programs" ppt

... the Leyte Cordillera: an indicator for species – site suitability in local reforestation programs Gerhard LANGENBERGER* Institute of Plant Production and Agroecology in the Tropics and Subtropics ... on the westernside of the mountain range are actually typical species of the coastal plains which found their refuge in the rugged westernfoothills of Mt. Pangasugan. The dominant role of Shoreapolysperma ... information for ensuring species- site suitability in local reforestation and tree plantation programs.Dipterocarpaceae / land rehabilitation / native species / Philippines / reforestation Résumé – Distribution...

Báo cáo lâm nghiệp:"Individual-tree growth and mortality models for Scots pine (Pinus sylvestris L.) in north-east Spain" docx

... 10.1051/forest: 2002068Original articleIndividual-tree growth and mortality models for Scots pine (Pinus sylvestris L.) in north-east SpainMarc Palahía*, Timo Pukkalab, Jari Miinac and ... authors, on individual-tree growth models for Scots pine in Spain. Scots pine in Spainis a species of great economic, ecological and social impor-tance and the models presented in this study ... and Montero [26] in the Sistema Central (–1.836) and by Rio et al.[25] for stands in the Sistema Ibérico and Central (–1.829) in Spain. Hynynen [11] obtained for Scots pine in Finland a slopeequal...

Báo cáo lâm nghiệp:"An examination of the interaction between climate, soil and leaf area index in a Quercus ilex ecosystem" ppt

... C. Hoff and S. Rambalfall and leaf quantity [33, 43]. Important then are the timing of rainfall and drought events, the quantity of rainfall, the storagecapacity of the soil and quantity and ... relations between the LAI and both climatic and soil factors; (2) understand how the water and carbon balancesbehave as a function of water availability and LAI; and (3)define how the balance ... and water use efficiency. This balancewas obtained at a leaf area index between 3 and 3.5. This inter-val is in agreement with the LAI of 3 observed at this site [29]. In summary, the LAI of...

Báo cáo lâm nghiệp: " A collection of functions to determine annual tree carbon increment via stem-analysis" pot

... hi).Stem lateral surface area (A) is calculated as the sum of eachlog lateral area and the lateral area of the cone formed by tree tip: .2wG ⋅=π()iiiiihhGGv −⋅+=++112()ntreenniihhGvV ... dell'Appennino Pistoiese, inAtti del seminario funzionalità del sistema faggeta, Accademia Ita-liana di Scienze Forestali, 1995, pp. 309–318.[6] Carey E., Sala A. , Keane R., Callaway R.M., Are old forests ... Frattegiani M., Manetti M.C., Il metodo di analisi delfusto. Confronto tra cinque metodi di stima della relazione altezza-età, Annali dell'Istituto Sperimentale per la Selvicoltura, Arezzo...

Báo cáo lâm nghiệp: " An overview of ecology and silviculture of indigenous oaks in France" ppt

... class="bi x0 y0 w2 h1 8" alt ="" conditions found in France and especiallyon the climatic diversity: oceanic, continen-tal and Mediterranean climates with theirmountain variants.Pedunculate ... extension, or both. Two of these species are widespread in the hills and plains of the Atlantic and of the mid-European domains: Q petraea (sessile oak), and Q robur (pedunculateoak). ... thecause of its greater sensitivity to drought and the decline observed in the center of France after the severe droughts of 1996 and 1991 (Becker and Levy, 1983; Durandet...

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