Báo cáo lâm nghiệp: " Root system development and health con

Báo cáo lâm nghiệp: " Root system development and health condition of sycamore maple (Acer pseudoplatanus L.) in the air-polluted region of Krušné hory Mts" ppt

... (1 0): 452–461 JOURNAL OF FOREST SCIENCE, 53, 2007 (1 0): 452–461 Root system development and health condition of sycamore maple (Acer pseudoplatanus L. ) in the air-polluted region of Krušné hory ... similarly like the rooting depth and the length of horizontal roots – a Table 4. Vitality and mycorrhizal infection of ﬁne roots St...

Ngày tải lên : 07/08/2014, 04:20

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Báo cáo lâm nghiệp:"Individual-tree growth and mortality models for Scots pine (Pinus sylvestris L.) in north-east Spain" docx

... the intercept of the self-thinning line was examined by adding the site index to the model as an independent variable. The following model for the self-thinning limit was estimated using ordinary ... [23] and the –3/2 power rule of self-thinning [34], a log- log plot of the average tree size and stem density will give a straight self-thinning line of a constant slo...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "Oak growth, development and carbon metabolism in response to water stress" pps

... non-stom- atal limitations to photosynthesis. Plant Cell Envi- ron 8, 95-104 Kelly GJ, Latzko E (199 1) Carbon metabolism: on reg- ulation at the cellular level and at the whole plant level, ... Isebrands JG, Tomlinson PT, Dickson RE (199 4) Carbon fixation and allocation in northern red oak. In: Biology and Silviculture of Northern Red...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Distribution, historical development and ecophysiological attributes of oak species in the eastern United States " pdf

... grandifolia on the gently rolling till plains of Ohio and Indi- ana, and with Tilia americana in south- western Wisconsin, northwestern Illinois, northeastern lowa and southeastern ... dramatic increase following early logging and fire. Quer- cus species have also increased in the mid-Atlantic region from land-clearing, the charcoal iron...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: " Compatible stem taper and stem volume functions for oak (Quercus robur L and Q petraea (Matt) Liebl) in Denmark" docx

... 7.0% because of the uncertainty in the estimate of the stand level. Using the stand level adjustment (eq [12 ]) when predicting single tree volumes, the relative prediction ... robur L and Q petraea (Matt) Liebl) in Denmark. In the compatible system of stem taper and volume functions the solid of revolution of the stem t...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Predicting site productivity and pest hazard in lodgepole pine using biogeoclimatic system and geographic variables in British Columbia" potx

... heterophylla) unless burned by wild fires [2]. Forest fire plays an integral role in the ecology and regeneration of lodgepole pine natural stands, particularly for the subspecies latifolia in Rocky ... Mile 451 in the SWB had relatively high gall incidence (3.57 galls per tree) and the Blue River site in BWBS zone had few galls (0.30 galls per tree), but there is only o...

Ngày tải lên : 08/08/2014, 00:21

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Báo cáo lâm nghiệp: "Forest yield index and its applicability to the assessment of future forest yields" docx

... of assort- ments. e values of site indexes of individual tree species showed in general a considerably large vari- ability. Mean values vary in all examined MGFTs similarly (Fig. 2). In the ... unit yields of mixtures, and ﬁnally for yield indexes according to the rules of error transmission summarized by Š et al. (200 3). RESULTS AND DISCUSSION The a...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Air pollution load and stand nutrition in the Forest District Jablunkov, part Nýdek" docx

... et al. 200 6). This is a problem in the whole Beskids region, including also their Polish and Slovak part. In the Polish part of the Silesian Beskids, low content of the basic elements, low ... samples of spruce needles Fig. 4. Ca/Al molar ratio in soil water LH – under the humus horizon, L3 0 – at the depth of 30 cm of mineral soil, L5 0 – at the dept...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Temperate forest trees and stands under severe drought: a review of ecophysiological responses, adaptation processes and long-term consequences" ppt

... potential all along the path- way. In addition, the decrease of soil-water content results in an increase of the hydraulic resistance within the soil and at the soil -root interface. As a result of ... over the last years was mainly on the role of forests in the global carbon balance. During the last decade, the importance of the inter- speciﬁc diversi...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Divergence among species and populations of Mediterranean pines in biomass allocation of seedlings grown under two watering regimes" pps

... (H) and diameter at root collar (D) including the 16 populations studied. Labelling: Squares, Pinus pinaster; up triangles, P. halepensis; circles, P. canariensis and inverted triangles, P. pinea. ... diﬀerences follow those included in Table I, excluding the species code. 94 M.R. Chambel et al. Figure 3. Allometric trajectories for roots (left column) and leaves (right column)...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: " Root system development and health condition of sycamore maple (Acer pseudoplatanus L ) in the air-polluted region of Krušné hory Mts" ppt

Báo cáo lâm nghiệp: " Root system development and health condition of sycamore maple (Acer pseudoplatanus L.) in the air-polluted region of Krušné hory Mts" ppt

Báo cáo lâm nghiệp:"Individual-tree growth and mortality models for Scots pine (Pinus sylvestris L.) in north-east Spain" docx