Báo cáo lâm nghiệp: "Eﬀect of single Quercus ilex trees upon

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

... 355 c  INRA, EDP Sciences, 2007 DOI: 10.1051/forest:2007012 Original article Eﬀect 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 nearly constant during the rest of the...

Ngày tải lên : 07/08/2014, 16:21

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Báo cáo lâm nghiệp: "Eﬀect of Melampsora larici-populina on growth and biomass yield of eight clones of Populus nigra" ppsx

... distribution of rust infection remained stable in the tested set of clones during the trial.  e intensity of infection during the growing sea- son in 2005 and 2007 was evaluated in the same ... t-test Table 5. Increments of stem diameter and plant height from the beginning of vegetation to the ﬁ rst rust incidence (beginning of July 2007) and their percent proport...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Eﬀect of species composition, stand density and site index on the basal area increment of oak trees (Quercus sp.) in mixed stands with beech (Fagus sylvatica L.) in northern France" potx

... (Eq. (8)) are shown in Table III. The slope γ ij decreased with increasing stand density and increasing admixture of beech. The slope increased with increasing site index. Stand age had no signif- icant ... from thinning in absolute terms than did thinner trees. Continually, the presence of beech in mixtures aﬀects the basal area increment of oak, such that beech admixture ch...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Eﬀect of leaf biomass and phenological structure of the canopy on plot growth in a deciduous hardwood forest in northern Japan" pot

... was performed in 1984. Values (stem number and basal area just before and after thinning and thinning ratio) are shown for 1984 and 1995. Plot Before thinning After thinning Thinning ratio 1995 Stem ... was also in the order UT > LT > HT (Fig. 2b). Yang [41] and Strong and Erdmann [33] also reported higher mortality in un- thinned stands than in thinned stands. In...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Eﬀect of tree species substitution on organic matter biodegradability and mineral nutrient availability in a temperate topsoil" pptx

... explained 60% and 19% of total variance. The F1 axis was determined on one hand, by the nitrate and water- extractable Ca, Mg, and Mn contents, and on the other hand, by the water- extractable Fe and ... emission of compounds inhibiting nitrogen mineralization (i.e. 20000-fold less in clear-cut plot than in the forest). Net nitriﬁcation was mainly the highest in soils o...

Ngày tải lên : 07/08/2014, 16:20

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

... fungi: 80 mL of a solution containing 20 g of glucose, 1.5 g of peptone, 7.5 g of malt extract and 1 000 mL of distilled water. After inoculating glass jars with fungal cultures and waiting 10 days, ... retention eﬃciency of such combinations is around 15 to 50% of initial boron retained [16, 17,20]. We observe since a few years an increasing interest in the wood treatme...

Ngày tải lên : 07/08/2014, 16:21

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Báo cáo lâm nghiệp: "Eﬀects of microsite variation on growth and adaptive traits in a beech provenance trial." pps

... determinant of soil water content than water retention capacity resulting from the soil texture and structure on this trial plot.  e temperature and moisture pattern is reﬂ ected in the ... interaction effect indicating the heterogeneity of blocks. Analysis of covariance using single- tree kriging estimates of environmental variables as covariates showed that i...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Eﬀects of drought and heat on forest insect populations in relation to the 2003 drought in Western Europe" ppt

... the context of this exceptional event. Observations of changes in population levels of the main European forest insect pests during and after the drought are presented and discussed in the light of current ... understanding of the dynamics of forest insect populations. It is often diﬃcult to disentangle density dependent and density independent pro- cesses involved in...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Eﬃciency of early selection for rotation-aged wood quality traits in radiata pine" pdf

... rotation age for MFA and MOE and at least 80% effective for wood density. 5. Thinning of trials increased ring width and MFA, reduced ring wood density and MOE of remaining trees in the first two or ... Aus- tralia. King and Burdon [24] studied the time trend in inher- itance and projected efficiencies of early selection in a large 17-year-old progeny test in New Zeala...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Eﬀects of selective thinning on growth and development of beech (Fagus sylvatica L.) forest stands in south-eastern Slovenia" docx

... number of crop (selected) trees in the ﬁrst thinning and thinning intensities, taking account of economical factors [46, 51]. In Slovenia, selective thinning is the main type of thinning [34]. ... again during the last thinning. In the T2, 258 crop trees were chosen in the ﬁrst thinning, and only 62% of these trees were chosen again during the last thinning. Only c...

Ngày tải lên : 07/08/2014, 16:20

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