Báo cáo lâm nghiệp: "The reproductive success of a Quercus petraea × Q robur F1-hybrid in back-crossing situations" potx

Báo cáo lâm nghiệp: "The reproductive success of a Quercus petraea × Q. robur F1-hybrid in back-crossing situations" potx

Báo cáo lâm nghiệp: "The reproductive success of a Quercus petraea × Q. robur F1-hybrid in back-crossing situations" potx

... to the fact that we have only investigated the back-crossing behaviour of a single Q. petraea × Q. robur F1-hybrid, and compared it to a single tree of Q. robur and Q. petraea, respectively. Studies ... that the formation of Q. petraea × Q. robur F1-hybrids is subject to substantial barriers (narrow arrows), but suggest that this rarely formed Q. petrae...
Ngày tải lên : 07/08/2014, 16:20
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Báo cáo lâm nghiệp: "The first reaction of soil mite fauna (Acari, Mesostigmata) caused by conversion of Norway spruce stand in the Szklarska Poręba For" potx

Báo cáo lâm nghiệp: "The first reaction of soil mite fauna (Acari, Mesostigmata) caused by conversion of Norway spruce stand in the Szklarska Poręba For" potx

... domination of Uropo- dina mites was increased and domination rate of Parasitidae mites was decreased. Similar results of the reaction of this group of mites to increas- ing amount of broadleaves ... Biolog a and Facultad de Ciencias, Universidad Nacional Autónoma de México. México, Sociedad Latinoamericana de Acarolog a: 193–196. SKORUPSKI M., RADZIKOWSKI A. , CEITEL J ., 20...
Ngày tải lên : 07/08/2014, 03:22
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Báo cáo lâm nghiệp: "The effect of different stand density on diameter growth response in Scots pine stands in relation to climate situations" potx

Báo cáo lâm nghiệp: "The effect of different stand density on diameter growth response in Scots pine stands in relation to climate situations" potx

... 463 Table 1. Basic data about experiments and data collection  inning experiment Geografi cal location* of stands Established (year) Age of establishment (years) Elevation of stands (m a. s.l.) Variants Increment ... step of data analyses). We compared the variability of growth response in control un- thinned variants against thinned variants. RESULTS  e eff ect of droug...
Ngày tải lên : 07/08/2014, 10:21
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Báo cáo lâm nghiệp: "Structure and development of forest stands on permanent research plots in the Krkonoše Mts" pdf

Báo cáo lâm nghiệp: "Structure and development of forest stands on permanent research plots in the Krkonoše Mts" pdf

... accompanied by aggradation stage of the middle layer. Advanced natural regen- eration mainly of beech and sporadical silver fi r, sessile oak, rowan, sycamore maple, Norway maple, small-leaved linden, ... mugo, Fagus sylvatica, Sorbus aucuparia, Acer pseu- doplatanus, A. platanoides, Ulmus glabra, Quercus petrae, Betula pendula J. FOR. SCI., 56, 2010 (11): 518–530 529 cades the spati...
Ngày tải lên : 07/08/2014, 10:21
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Báo cáo lâm nghiệp: "The successional status of tropical rainforest tree species is associated with differences in leaf carbon isotope discrimination and functional traits" pot

Báo cáo lâm nghiệp: "The successional status of tropical rainforest tree species is associated with differences in leaf carbon isotope discrimination and functional traits" pot

... since carbon assimilation increases with increasing N and SLA, and decreases with in- creasing C and LD (Tab. II). It has been suggested that includ- ing additional traits related to water relations ... Equations of Caemmerer and Farquhar [8] were used to calculate net carbon assimilation rate on a leaf area (A, µmol m −2 s −1 )ormass (A m , mmol g −1 s −2 )basis, stomatal conductance...
Ngày tải lên : 07/08/2014, 16:20
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Báo cáo lâm nghiệp: "The effects of thinning treatments on density, MOE, MOR and maximum crushing strength of Pinus brutia Ten. wood" ppt

Báo cáo lâm nghiệp: "The effects of thinning treatments on density, MOE, MOR and maximum crushing strength of Pinus brutia Ten. wood" ppt

... between thinning intensity and radial increment (1.30 m) for an individual tree. Thinning treatments increased annual ring width especially a few years after thinning. Heavy thinning treatments ... length in each an- nual ring and the sample size for making statistically significant anal- ysis for each group was determined. Then all annual rings samples were macerated. Maceration was condu...
Ngày tải lên : 07/08/2014, 16:21
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Báo cáo lâm nghiệp: "The angular distribution of diffuse photosynthetically active radiation under different sky conditions in the open and within deciduous and conifer forest stands of Quebec and British Columbia, Canada" pptx

Báo cáo lâm nghiệp: "The angular distribution of diffuse photosynthetically active radiation under different sky conditions in the open and within deciduous and conifer forest stands of Quebec and British Columbia, Canada" pptx

... University of Regina, Regina, Saskatchewan, S4S 0A2 , Canada c Department of Renewable Resources, University of Alberta, Faculty of Agriculture, Forestry and Home Economics, University of Alberta, 442 ... whole aspen forest canopy. This par- ticular structure explains the penetration of lateral light, which results in a gradual attenuation of light with decreasing solar el...
Ngày tải lên : 08/08/2014, 00:22
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Báo cáo lâm nghiệp:" The key-role of topsoil moisture on CO2 efflux from a Mediterranean Quercus ilex forest" docx

Báo cáo lâm nghiệp:" The key-role of topsoil moisture on CO2 efflux from a Mediterranean Quercus ilex forest" docx

... 10.1051/forest:2003045 Original article The key-role of topsoil moisture on CO 2 efflux from a Mediterranean Quercus ilex forest Richard JOFFRE a *, Jean-Marc OURCIVAL a , Serge RAMBAL a , Alain ROCHETEAU a, b a Équipe ... c+()∂Tgθ()∂T== 522 R. Joffre et al. Strong interannual variability affected autumnal recharge. As a consequence, winter field capacity could be reached e...
Ngày tải lên : 08/08/2014, 01:21
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Báo cáo lâm nghiệp: "Long-term evolution of understorey plant species composition after logging in chestnut coppice stands (Cevennes Mountains, southern France)" ppsx

Báo cáo lâm nghiệp: "Long-term evolution of understorey plant species composition after logging in chestnut coppice stands (Cevennes Mountains, southern France)" ppsx

... diversity (Shannon index) Uncut areaaaaaaaaaaaa Clear-cut area – b bc c cd cd de de de e a Evenness Uncut area ab ab ab ab ab ab ab ab ab ab ab Clear-cut area – c cd d cde cd e a a a b Figure 3. ... climate in the Cevennes as being transitional between Mediterranean and Oce- anic. The mean annual rainfall is about 1 300 mm, mainly occurring in the months October through March. Holm...
Ngày tải lên : 08/08/2014, 00:22
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Báo cáo lâm nghiệp: "and nutrient cycling of a highly productive Corsican pine stand on former heathland in northern Belgium" docx

Báo cáo lâm nghiệp: "and nutrient cycling of a highly productive Corsican pine stand on former heathland in northern Belgium" docx

... (TF- BP-DD). Canopy leaching of Ca, Mg and K minus canopy leaching of Ca, Mg and K asso- ciated with foliar excretion of weak acids was further assumed to equal uptake of H and ... Correspondence and reprints E-mail: johan.neirynck@rug.ac.be canopy exchange and Ca-, Mg- and K-bear- ing particles are assumed to have the same mass median diamet...
Ngày tải lên : 09/08/2014, 04:20
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