Báo cáo lâm nghiệp: "Ecophysiological factors contributing to the distributions of several Quercus species in the intermountain west" docx

Báo cáo lâm nghiệp: "Ecophysiological factors contributing to the distributions of several Quercus species in the intermountain west" docx

Báo cáo lâm nghiệp: "Ecophysiological factors contributing to the distributions of several Quercus species in the intermountain west" docx

... note Ecophysiological factors contributing to the distributions of several Quercus species in the intermountain west JR Ehleringer, SL Phillips Department of Biology, University of Utah, ... examine aspects of the water relations of these three oak species native to the intermountain west and of their hybrids under common growth en...
Ngày tải lên : 08/08/2014, 18:21
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Báo cáo lâm nghiệp: "Extended length rotation to integrate timber and pine nut production with the conservation of structural diversity in a Pinus pinea (L.) forest" pdf

Báo cáo lâm nghiệp: "Extended length rotation to integrate timber and pine nut production with the conservation of structural diversity in a Pinus pinea (L.) forest" pdf

... the height of the tree at the end (H 2 ) and at the be- ginning (H 1 ) of the five year period, as well as the difference between the age at the end of the period (T 2 ) and the age at the beginning ... for the estimated age. The distribution of the age of the dominant strata and the site index within the for- est area can be seen in Figure 4. The...
Ngày tải lên : 07/08/2014, 16:20
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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

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

... application of the treatments, no difference in inter-row weed biomass was found between the mowed plots (M) and the control (V) (Tab. I). The applica- tion of herbicides in the beginning of the growing ... treatments practiced in this study differed in their success in terms of controlling the weeds. Two months after the application of the treat- ments, t...
Ngày tải lên : 07/08/2014, 16:20
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Báo cáo lâm nghiệp: "Modelling canopy conductance and stand transpiration of an oak forest from sap flow measurements " docx

Báo cáo lâm nghiệp: "Modelling canopy conductance and stand transpiration of an oak forest from sap flow measurements " docx

... as during the leaf fall period. Coupling of transpiration to the atmosphere We first tested the sensitivity of the model to ga in the case of the oak stand using higher for ... and model were observed in the morning and in the evening, probably due to a dehydration in the morning of the water exchangeable tissues of the...
Ngày tải lên : 08/08/2014, 18:21
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Báo cáo lâm nghiệp: "Gibberellin A enhances flowering 4/7 of Picea glauca grafts in two consecutive years" pdf

Báo cáo lâm nghiệp: "Gibberellin A enhances flowering 4/7 of Picea glauca grafts in two consecutive years" pdf

... I). Interactions were due to a change in magnitude of response, rather than to a change in rank of the treatment combina- tions. Clone x treatment interactions for staminate ... year’s growth as an index of when to apply GA4n . The final length of the treated branches in 1984 was 75% of the control length and 70&dquo;/ ° of...
Ngày tải lên : 09/08/2014, 04:20
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Báo cáo lâm nghiệp: "Ecophysiological responses of Mediterranean pines to simulated sea aerosol polluted with an anionic surfactant: prospects for biomonitoring" pptx

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

... of the sprayed concentration, regardless of the species. This suggests that the three pines have the same ability to intercept sea aerosols. In the past, concentrations of MBAS measured in the ... Mediterranean pinewoods from the hazards presented by these pollutants. As time passed after the sprayings, an increase of visible injury was observed in all specie...
Ngày tải lên : 08/08/2014, 00:22
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Báo cáo lâm nghiệp: "Multivariate statistical approach to comparison of the nutrient status of Norway spruce (Picea abies [L.] Karst.) and top-soil properties in differently managed forest stands" potx

Báo cáo lâm nghiệp: "Multivariate statistical approach to comparison of the nutrient status of Norway spruce (Picea abies [L.] Karst.) and top-soil properties in differently managed forest stands" potx

... among the indicators of soil disturbances. e soil dysfunctions that are among the factors of forest decline (M 2003) cause that symptoms of decline appear both in natural and in managed ... Differences in the properties of the particular sampling points and the fact that the in uence of soil heterogeneity on the specificity of forest stand cann...
Ngày tải lên : 07/08/2014, 03:22
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Báo cáo lâm nghiệp: "Rodent-caused damage to forest trees from the viewpoint of forestry practice" potx

Báo cáo lâm nghiệp: "Rodent-caused damage to forest trees from the viewpoint of forestry practice" potx

... e intensity of damage to individual tree species corresponds to the need of repair planting in plantations that were totally destroyed by rodents. In the case of beech it was necessary to ... However, this opinion concerning the significance of the individual species is in contradic- tion with the information the foresters provided on the distribution...
Ngày tải lên : 07/08/2014, 03:22
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Báo cáo lâm nghiệp: "Which factors explain lepidopteran larvae variance in seasonal guilds on some oaks" pptx

Báo cáo lâm nghiệp: "Which factors explain lepidopteran larvae variance in seasonal guilds on some oaks" pptx

... factor. The number of species and also individuals in the SF guild was quite low. is guild tended to be in uenced more by the poor quality of leaves and the increasing accumulation of tannin ... Because of a lack of information about the quality of food and amount of tannin in leaves during our study we cannot precisely estimate the impact of these fa...
Ngày tải lên : 07/08/2014, 10:21
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Báo cáo lâm nghiệp: "Biomass functions applicable to oak trees grown in Central-European forestry" doc

Báo cáo lâm nghiệp: "Biomass functions applicable to oak trees grown in Central-European forestry" doc

... e information on tree biomass is required to assess the amount of carbon held in trees, which in turn represents the basis of the assessment of carbon stock held in forests. is leads to the ... three parameters of the equation. However, it is to note that in allometric studies the nonlinear regression analysis is often avoided using the logarithmic l...
Ngày tải lên : 07/08/2014, 10:21
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