Báo cáo lâm nghiệp: "Effect of tree species substitution on organic matter biodegradability and mineral nutrient availability in a temperate topsoil" pptx
Báo cáo lâm nghiệp: "Effect of tree species substitution on organic matter biodegradability and mineral nutrient availability in a temperate topsoil" pptx
... organic mat- ter biodegradability and consequently on mineral element and major nutriments release and availability. The results showed that carbon mineralization and nitrogen mineralization can ... water-holding capacity). Carbon-mineralization was monitored; mineral nitrogen, water-extractable organic carbon and mineral elements were determined before and after th...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "Effect of Melampsora larici-populina on growth and biomass yield of eight clones of Populus nigra" ppsx
... trait of resistance to Melampsora larici- populina was evaluated in fi eld conditions using a 6-point scale: 0 – no signs of rust infection on leaves; 1 – small patches covered by uredia on a ... means that the distribution of rust infection re- mained stable in the tested set of clones during the trial. e intensity of infection during the growing sea- son in 2005...
Ngày tải lên: 07/08/2014, 10:21
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
... stands. For oak, Fagacées describes the stand basal area increment as a function of dominant height, height increment of the dominant trees, and stand density. To allocate the stand basal area ... out oak [44]. Variations in weather can also have an impact on basal area increment [30]. Even though the evaluation dataset was based on a large variety of period-site-thinning co...
Ngày tải lên: 07/08/2014, 16:20
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
... leaf biomass, seasonal changes in leaffall, and plot growth for 11 years post-thinning in a secondary deciduous hardwood stand dominated by Betula maximowicziana Regel in central Hokkaido, Japan. ... Thinning 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 th...
Ngày tải lên: 07/08/2014, 16:20
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
... this variation, although small, can also explain the favourable water status of the trees studied. For in- stance, integrating θ variation in BA site in the first 3 m depth and at 13.3 m of distance ... the edapho-climatic conditions in the interpretation of tree- pasture interactions. 4.2. Lateral water uptake by trees Thinning usually implies a higher water availability...
Ngày tải lên: 07/08/2014, 16:21
Báo cáo lâm nghiệp: "Effect of an oil heat treatment on the leachability and biological resistance of boric acid impregnated wood" pps
... has an intermediate behaviour regarding drying and consequently regarding boron leaching. Except a small increase of retention for wood treated with a 1.0% boric acid solution, boron concentration ... with about 60% of oleic acid and 15% of saturated fatty acids. Impact of these drying properties has been investigated regard- ing boron retention and biological resistance of...
Ngày tải lên: 07/08/2014, 16:21
Báo cáo lâm nghiệp: " Effect of species and ecological conditions on ellagitannin content in oak wood from an even-aged and mixed stand of Quercus robur L. and Quercus petraea Liebl." docx
... conditions on ten heartwood ellagitannins (vescalin, castalin, roburins A- E, grandinin, vescalagin and casta- lagin) and ellagic acid were investigated in a 100 years old stand of 5 ha located in ... can observe a negative correlation between castalin, vescalin and ellagic acid content and the percentage of vescalin, castalin, roburin A and C on the one hand and...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp: "Effects of microsite variation on growth and adaptive traits in a beech provenance trial." pps
... subdivi- sion is achieving homogeneous environmental conditions within blocks so that blocking can re- move the within-trial environmental variation by using blocks as a source of variation in an analysis ... environmental indicators. e aim of this study was to clarify to what extent the spatial variation of environment a ects growth and adaptive traits in a provenance...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Effects of drought and heat on forest insect populations in relation to the 2003 drought in Western Europe" ppt
... interaction of the various factors in uencing insect performance and pop- ulation dynamics. (4) Continue and expand forest health sur- vey programs. Qualitative surveys should be maintained and augmented ... summer and autumn and then resume their development in spring. In- crease of heat in galleries may have accelerated the develop- ment and allowed larvae to enter wi...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "Efficiency of early selection for rotation-aged wood quality traits in radiata pine" pdf
... year trees in New Zealand. Radiata pine, the most important plantation species in Aus- tralia, has about 750 000 ha of plantations [47]. Of the 7.3 mil- lion cubic meters of softwood sawlogs and ... radiata pine (Pinus radiata) has been examined in growth and wood density. Cotterill and Dean [6] observed early selection at age 6.5 was effective for diameter and basal area...
Ngày tải lên: 07/08/2014, 16:20