Báo cáo lâm nghiệp: "Specification of the beechwood soil environment based on chosen soil properties, aiming at the Fageta paupera habitat" docx

... vegetation and the rest of phytocoenosis contribut- ing to the formation of the soil environment or on the contrary, the absence or presence of herbs on the soil surface is primarily caused by the ... paupera, on the contrary, the contribution to the knowledge of this ecosystem is in the determina- tion of complicated soil environment, compare...

Ngày tải lên: 07/08/2014, 10:21

... were focused on the regeneration of existing Norway spruce stands, on the regeneration of large and small clear-felled areas and on the reconstruction of the stands of substitute species (European ... management of higher elevations. e use of high-quality planting stock, observation of all technological procedures of regen- eration and consistent protection...

Ngày tải lên: 07/08/2014, 03:22

... represents the contribution of the original family covariance (non-transformed data) to the real phenotypic correlation. A further analysis of the radial pattern of association among different traits ... respectively. The latewood proportion (LP) was estimated as the ratio between the ring area consisting of latewood and the total ring area. Cumulative late proportion...

Ngày tải lên: 08/08/2014, 00:21

... improves the total N balance of the system. 5. CONCLUSIONS The results of the present study show that, at short-term, under the environmental conditions of Portugal, the incorpo- ration of non-woody ... three times greater than at the harvest of the first rotation of eucalypts plantations [19], and the environmental conditions are mod- ified (e.g., soil water...

Ngày tải lên: 07/08/2014, 16:21

... p 0 denote deviations from the considered steady-state. Equation (2) is obtained by truncating the Taylor expansion of Eqn (1) after the linear terms. The constant matrix A is the Jacobian matrix of the nonlinear ... monitoring the expression levels of large gene sets and the concentrations of metabolites, are evolving rapidly. These data sets contain the information...

Ngày tải lên: 07/03/2014, 17:20

... between the treatments. Acid irrigation had very limited effects on the elemental concentrations in the needles. Acid irrigation resulted in long- lasting higher SO 2− 4 concentrations in seepage water. ... physiological value for the trees at our site, while the recently observed reduction in P con- centration needs attention. The N concentrations are not good indices for N-sa...

Ngày tải lên: 07/08/2014, 16:20

... region. e next step is the second evaluation Fig. 2. Best linear unbiased pre- dictions of plus trees sorted by their origin (see Fig. 1 for the physical distribution of locations on the ... unbiased in the sense that the average value of the estimate (with respect to the distribution of Y) is equal to the expected value of the quantities being estimated, a...

Ngày tải lên: 07/08/2014, 03:22

... In the preparation of soil/ site by ploughing, the concentrations of nitrogen and carbon slightly decrease as a result of mixing the soil of the upper horizon with the central part of the soil ... regeneration. Pedunculate oak, ash and hornbeam are of use in the dynamics of the rate of decomposition processes (K 1985). Problems of the effect o...

Ngày tải lên: 07/08/2014, 03:22

... proportion of scattered and increased attack. us, it is evident that the invasion was not intensified on the upper side of a break-off in the course of the growing season. On the lower side of the ... the only generation of P. chal- cographus developed that left the place of devel- opment (one half on the upper side and one third on the lower side o...

Ngày tải lên: 07/08/2014, 04:20

... by the consumption of seeds in the long-term ho- rizon. With respect to specifi c conditions which resulted in the presence of a large population of rodents at the locality in the period of ... assess the function of self-regulation mecha- nisms in the reserve in spite of the high consumption of seeds by small rodents the inspection of natural regenerati...

Ngày tải lên: 07/08/2014, 10:21