Báo cáo lâm nghiệp: "Growth of a poplar short rotation coppice under elevated atmospheric CO2 concentrations (EUROFACE) depends on fertilization and species" ppt

... 10.1051/forest:2004023 Original article Growth of a poplar short rotation coppice under elevated atmospheric CO 2 concentrations (EUROFACE) depends on fertilization and species Marion LIBERLOO a *, Birgit GIELEN a , Carlo ... specific leaf area (SLA), the area of these leaves was calculated. A regression analysis between basal area and total leaf ar...

Ngày tải lên: 08/08/2014, 01:21

... several ways according to leaf area development. For periods of leaf area expansion and leaf fall, daily transpiration was calculated with an equation based on daily PET and on a relative LAI (LAI i /LAImax), ... (LAI i /LAImax), with i standing for the day and LAImax standing for the maximum LAI of the year. For periods of constant LAI, oak transpiration was deduced by inte...

Ngày tải lên: 08/08/2014, 00:22

... the nearest 5 mm), tree height (to the nearest 0.5 m), size of the crown (vertically and horizontally) and tree class evaluation (according to Konšel’s classification). e stand is at an altitude ... silvicultural measures recommended for these stands are not very common and/ or very general ones and therefore the detailed analysis of its growing capacity and required crown...

Ngày tải lên: 07/08/2014, 03:22

... P and K contents and raised soil reaction, however only slightly. e influence of basalt grit on the sum of exchangeable bases, base saturation and cation exchange capacity was also less pronounced ... limestone and basalt grit resulted in the slower growth of Carpathian birch plantations. Liming raised soil reaction, sum of exchange- able bases, base saturation, cation exc...

Ngày tải lên: 07/08/2014, 10:22

... herbs can also occur. Phenological data are a certain expression of the climate character of a given region. us, they can contribute to assess the variability of weather and also to evaluate ... arithmetic mean, maximum and minimum value, variation range and standard deviation were calculated. Relationships were calculated between selected spring phenological stages a...

Ngày tải lên: 07/08/2014, 03:22

... number of stomata on the leaf adaxial surface and biomass, thickness of palisade tissue and biomass, leaf area and biomass were described in Populus × euroamericana and Populus deltoides clones. ... cultivars 'I-214' and 'Robusta' (Populus × euroamericana) were planted as standards of the test and cultivar 'I-214' was then used as a...

Ngày tải lên: 07/08/2014, 10:21

... Zerihun A. , Montagu K.D., Hoffmann M.B., Bray S.G., Patterns of belowground and aboveground biomass in Eucalyptus populnea woodland communities of northeast Australia along a rainfall gra- dient, ... woodland vegetation from contrasting climatic regions in northeast Australia. 2. MATERIALS AND METHODS 2.1. Data source The data used in this work were collected as part of a large...

Ngày tải lên: 07/08/2014, 16:20

... mechanical stresses depend on chip forma- tion [11, 15, 16, 19], it appears clearly that, in routing, notions of crack propagations (with fracture toughness parameter), and cellular-wall mechanical ... the accuracy of measurements was estimated. Results showed a very high repetitivity with a variation coefficient of 0.1%. These gaps are really non signi- ficative and can be ex...

Ngày tải lên: 08/08/2014, 00:22

... (1989) 207– 231. [4] Bréda N., Granier A. , Intra- and inter-annual variations of transpi- ration, leaf area index and radial growth of a sessile oak stand (Quercus petraea), Ann. For. Sci. 53 (1996) ... plots and stand daily transpiration was around 0.6 mm d –1 . For technical reasons, the Acer transpiration could only be measured accurately in September and daily tran- spirat...

Ngày tải lên: 08/08/2014, 00:22

... Ormosia xylocarpa plantation forest; CK, Castanopsis kawakamii plantation forest; NF, natural forest of C. kawakamii. The abbreviations are the same as elsewhere. 2 Castanopsis kawakamii is only involved. 3 Six ... SOC concentration and SOC content among forests and depths and to test differences in annual above- and belowground carbon inputs among forests and years. All statistic...

Ngày tải lên: 08/08/2014, 00:22