Báo cáo lâm nghiệp: " Humus conditions and stand characteris

Báo cáo lâm nghiệp: " Humus conditions and stand characteristics of artificially established young stands in the process of the transformation of spruce monocultures" pdf

... moder in the unmixed spruce stand and mixed stands, mull-moder in the unmixed beech stand (according to N et al. 2001). The high accumulation of humus in H horizon in the mixed stand of ... floor occurs in the stand of larch with beech (52.6 t/ha) and the statistically lowest one in the unmixed beech stand (22.0 t/ha). e mixed s...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp:"Water relations and hydraulic characteristics of three woody species co-occurring in the same habitat" pptx

... extensive understanding of their short-term and long- term changes. The typical dynamic sequence of encroachment of abandoned grazing areas of the Karstic region [see above and 9, 10, 24] is in accordance ... could be explained in terms of their complementary changes in R root through the year that allowed the peaks of their water demand to be reached in diffe...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "Fire behaviour and severity in a maritime pine stand under differing fuel conditions" pdf

... ignited a fire line along 40 m of the wind- ward edge of the stand, which propagated freely with the wind down the length of the stand. Plot location in relation to the fire path followed the sequence ... high-intensity fire involving partially or totally the tree canopy and killing all trees was experienced in the older treatment area and in the untreate...

Ngày tải lên : 08/08/2014, 01:22

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Báo cáo lâm nghiệp: "Production potential and ecological stability of mixed forest stands in uplands – VI. A beech/larch stand on a mesotrophic site of the Křtiny Training Forest Enterprise" pot

... measurements, they were newly included in the evaluation of the check database. e stand growing stock and the periodic volume increment derived from it are related only to the dominant stand and the ... (25%), oak (11%) and to a lesser extent birch (5%) and spruce (3%) also occurred in the stand. In the course of 42 years, the proportion of lar...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Soil environment and nutrient status of Norway spruce (Picea abies [L.] Karst.) underplantings in conditions of the 8th FAZ in the Hrubý Jeseník Mts" potx

... mg·kg –1 . In the subsequent organomineral horizon (Ae/Ep) the values of Ca indicate the lower optimum reserves in the range of 80–160 mg·kg –1 , and in 15% of the studied plots the content of soil ... of humus substances (C ox ) in the organomineral horizon and the content of basic nutrients become limiting factors for the normal growth and d...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Yellow-cedar and western redcedar ecophysiological response to fall, winter and early spring temperature conditions" pdf

... photosynthetic sys- tems have developed the capability to withstand mild freezing events during the winter, thereby replenishing carbon stores and offsetting the metabolic cost of retaining foliage ... in late winter and early spring. Temperature is considered the primary environmental variable controlling the loss of freezing tolerance in late winter and early spring...

Ngày tải lên : 08/08/2014, 00:22

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Báo cáo lâm nghiệp: "Light acclimation and photosynthetic response of beech (Fagus sylvatica L.) saplings under artificial shading or natural Mediterranean conditions" docx

... France (plots and linear regression) and in southern France (mean, standard deviation and confidence interval of the mean), and for the natural regeneration (plots and linear regression). Only the 3rd ... regression) and southern France (mean, standard deviation and confidence interval of the mean), and for the saplings of natural regeneration (plots and li...

Ngày tải lên : 08/08/2014, 00:22

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Báo cáo lâm nghiệp: "Biomass increment and carbon balance of ash (Fraxinus excelsior) trees in an experimental stand in northeastern France" docx

... m). The main characteristics of the site (soil and climate) and the main fea- tures of the experimental stand of trees have been already described [26]. Briefly, the climate is semi-continental ... by hand only partially, and then, remaining leaves had to be collected in a net enclosing the crown as and when they were naturally falling until the end of leaf...

Ngày tải lên : 08/08/2014, 01:22

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Báo cáo lâm nghiệp: "Ecological conditions influencing the localization of egg-laying by females of the cockchafer (Melolontha hippocastani F.)" pps

... between the extent of the damage and the individual characteristics of the experimental plots. e relation between the extent of the damage and the method of estab- lishment of the stands and degree ... i.e. in the more northern regions. In the 3-year developmental cy- cle the ﬁrst moulting takes place as soon as in the year of hatching a...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Neuroptera, Raphidioptera and Mecoptera assemblages inhabiting young spruce (Picea abies) forests: dominance structure and seasonal activity patterns" docx

... Hemero- bius pini (Figs. 1a,b) began to appear in the mid of April. e occurrence increases at the end of May what corresponds with the observation of H and V (2002) in spruce forests of ... trees. H and V (2002) ob- served the peak of its activity in spruce forests of Paskovský les and Loucký les at the end of May in 1998....

Ngày tải lên : 07/08/2014, 03:22

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