Báo cáo lâm nghiệp: "Direct sowing of holm oak acorns: effects of acorn size and soil treatment" ppsx

... rooting of holm oak seedlings after direct sowing of the acorns, such as acorn size and pre -sowing soil preparation. 2. MATERIALS AND METHODS In autumn 2002 (early November), acorns of different sizes ... EDP Sciences, 2006 DOI: 10.1051/forest:2006079 Original article Direct sowing of holm oak acorns: effects of acorn size and soil treatment Francis...

Ngày tải lên: 07/08/2014, 16:20

... Kysuce and Orava re- gions in directions of the highest variability of site and stand conditions. Sample plots approximately 1 ha in size and rep- resentative of the surrounding forest stand were ... position towards the focus of biotic pest activity, stand age, and the proportion of spruce in a given stand.  e fourth Table 2. Forest damage classifi cation and assign...

Ngày tải lên: 07/08/2014, 10:21

... development and management of game popula- tions (M et al. 2001). Methods of counting faecal pellets are relatively cheap and quick. How- ever, the knowledge of a defecation rate and a pe- riod of ... between the density of game and particular groups of similar biotopes. Keywords: deer count; pellet group; red deer Supported by Ministry of Education, Youth and...

Ngày tải lên: 07/08/2014, 10:21

... the estimates of N and G. The data represent a wide range of stand ages and stand values such as H 100 , G, N, and D g (Tab. I, Fig. 1). 2.2. Model development Any number of stand variables may ... hectare), there are no systematic effects of the choice of plot sizes. Further, although the span of plot sizes seem large, the majority of plots are approxi- mately the same...

Ngày tải lên: 07/08/2014, 16:21

... Table 2. Stand characteristics of a generated test stand exemplifying the typical management of oak; mean stand height, basal area and stocking density (N) are shown for each stand age Stand Age ... each pair of sites is compared with table values of F-distribution taking into account the amount of parameters and standard deviations of residuals of the tested sites. Re...

Ngày tải lên: 07/08/2014, 10:21

... 526–531 The aim of the present study was to evaluate cotyledon storage proteins as markers of the genetic diversity in sweet holm oak. MATERIAL AND METHODS Samples of acorns from 40 holm oak trees ... col- lected in some representative regions of holm oak Table 2. Differentiation of globulin diversity within and among eight populations of holm oak Population...

Ngày tải lên: 07/08/2014, 10:22

... structure and understory light in two strata and two zones The Holm oak woodland studied was on average short (mean height of 2.4 m, mean height of individual Holm Tab le I. Mean and standard deviation ... (SD) of canopy height, number of stems and basal area for the 900 1-m 2 sampling points of the study plot, and mean and standard deviation of the height, proje...

Ngày tải lên: 07/08/2014, 16:20

Ngày tải lên: 07/08/2014, 03:22

... their size, quiet coloration and relatively difficult way of collecting and prepara- tion, they are at the edge of entomologists’ inter - ests. e psocids were studied only in some areas of the ... basis of long-standing studies of “forest pests”, S (1975) considers the geobiocenological units, AVZ and groups of forest types, as suitable frames for autecological st...

Ngày tải lên: 07/08/2014, 03:22

... the first half of June in 2006. e size of males and females is very similar. In total, pronotum width of males varied between 0.85 mm and 2.40 mm, and females between 1.00 mm and 2.30 mm. ere ... beginning of May and ended in mid-June with the peak at the end of May and beginning of June in 2005 (Fig. 2). In 2006, the flight activity started later in mid of May...

Ngày tải lên: 07/08/2014, 03:22