Báo cáo lâm nghiệp: "Drought conditioning improves water status, stomatal conductance and survival of Eucalyptus globulus subsp bicostata seedlings" ppt

... among prove- nances of several Eucalyptus [25, 42], between and within subspecies of E. globulus [15, 54], as well as among clones of E. globulus subsp. globulus [34]. After preconditioning we detected ... between survival and RWC 36-days after transplanting in seedlings of E. globulus. subsp. bicostata Each point represents the mean value of five observations of...

Ngày tải lên: 07/08/2014, 16:20

... Poland and assessment of their virulence using Scots pine seedlings Robert J * Agriculture University of Cracow, Department of Forest Pathology, Al. 29 Listopada 46, 31-425 Cracow, Poland (Received ... trees (oftenin pine stands growing near sawmills and wood yards). The new adults in July emerge through the bark and attack new shoots on pine trees of all ages. The beetl...

Ngày tải lên: 07/08/2014, 16:20

... for 2000−2003 and extrapolated to give estimates of the establishment of new areas of E. globulus between 2004 and 2016. Only plantings after 2004 were considered in calculations of carbon sequestration and ... weight in Eucalyptus globulus ssp. globulus in Portugal, For. Sci. 38 (1992) 80−94. [6] Borralho N.M.G., Cotterill P.P., Kanowski P.J., Breeding objectives for pu...

Ngày tải lên: 07/08/2014, 16:20

... pH–H 2 O is based on measuring pH of soil samples in water (five portions of water to one por- tion of soil); after 5 minutes of agitating and subse- quent standing for minimally two hours (not ... 4.1 pH Density of active and nonactiveȱmycorrhizae Fig. 6. Possible correlation between density of all (active and nonactive) mycorrhizae, and pH in consequence of variable oc...

Ngày tải lên: 07/08/2014, 03:22

... reforestation (% stands) damage (% stands) repeated reforestation (% stands) damage (% stands) repeated reforestation (% stands) damage (% stands) Fig. 1. Extent of damage by small mammals and repeated ... future of healthy forests in our landscape (A, MN 1998). e severity of damage to forests caused by small mammals and the incompleteness of knowledge of th...

Ngày tải lên: 07/08/2014, 03:22

... stage of maturity and de- cay classes 2 and 8 (Figs. 3a and 3b). In the stage of breakdown, large differences in the deadwood volume in early and late decay stages become even more profound ... dead standing trees and snags taller than 1.3 m in height, their tree height and diameter at breast height were assigned. In the case of lying dead wood, its total length and di...

Ngày tải lên: 07/08/2014, 10:21

... “connectivity” of strips. For example, (a) (b) Fig. 1. e study area landscape with management units (MUs) (a), and with strips (b) Table 2. Example of allocation and cutting progress of two-cut ... Japan 2 Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic 3 Department of Mathematical Analysis and Statistical Inferen...

Ngày tải lên: 07/08/2014, 10:21

... type of relief, this is a part of broken highlands of folded and faulted structures and intrusive igneous rocks of Czech highlands.  e bedrock is intrusive igneous acid granodiorite of the ... over 40% of its total area) cover- ing mainly the highlands Drahanská and Konická vrchovina as well as the Moravian Karst of Devo- nian origin and a part of the Adamovská vrc...

Ngày tải lên: 07/08/2014, 10:21

... difference, s standard deviation of differ- ences, n number of observations and t n–1 (α) critical value of Student’s distribution with n – 1 degrees of freedom. Under assumption of the normal ... sum of log volumes gives the volume of the stem. e form height is a ratio between the stem volume and the diameter at breast height. e method of measuring the diameter at a c...

Ngày tải lên: 07/08/2014, 10:21

... a stand that reached a dominant height of 24 m for a mean DBH of 26.6 cm, with a basal area of 63.3 m 2 /ha. Only very little pruning and thinning were conducted on this stand. For each of the ... set of simulations, all the variables of the model altered, with exception of the variable of interest, which was fixed to its initial value at the beginning of a ring (Fig. 3B)....

Ngày tải lên: 07/08/2014, 16:20