Báo cáo lâm nghiệp: "Reproduction of postﬁre Pinus halepensi

Báo cáo lâm nghiệp: "Reproduction of postﬁre Pinus halepensis Mill. stands six years after silvicultural treatments" ppsx

... Sciences, 2007 DOI: 10.1051/forest:2006088 Original article Reproduction of postﬁre Pinus halepensis Mill. stands six years after silvicultural treatments Jorge D L H a * ,DanielM  a ,FranciscoL ´  -S a , ... also increased as a result of this treatment. Pinus halepensis / thinning / pruning / postﬁre / r eproduction Résumé – Reproduction de pinè...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Analysis of herbicide effects on Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) natural regeneration" ppsx

... the area of 4,808.5 ha, that is about 0.2% of forest land of the Czech Republic. Forest stands of the ﬁrst four age classes prevail (A 2008). Further, a favour- able impact of this species ... be- tween seed years is 5–7 years, the beginning of fertility is at the age of 20 to 30 and it lasts till high age. Seeds germinate well in mineral soil. Most seeds fall to...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Processes of loss, recruitment, and increment in stands of a primeval character in selected areas of the Pieniny National Park (southern Poland" ppt

... to the number of living trees Ratio of the volume of dead trees to the volume of living trees Ratio of the number of recruited trees to the number of trees in stand Ratio of volume increment ... direction of changes taking place in biomass of the ecosystem in the layer of trees, and this is why it is taken into account in determination of stages and phases of...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Transformation of solar radiation in Norway spruce stands into produced biomass – the effect of stand density" doc

... existence of the threshold value of LAI on the ﬁnal values of RUE and ε are of great importance. CONCLUSION Two Norway spruce stands with diﬀerent densities were investigated from the aspect of ... on the basis of stand inventory realized at the end of each growing season. e procedure of the stand inventory consisted of measurements of stem circumference at the h...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Nutrition of silver fir (Abies alba Mill) growing at the upper limit of its occurrence in the Šumava National Park and Protected Landscape Area" pot

... presents the results of the nutrient bal- ance and content of the stress elements in the cur- rent year needles of ﬁr taken in 2006 and 2007 in the Bohemian Forest, in the mature stands growing predominantly ... analyzed by the ion-selective method after alkaline decomposition of ash. Statistical evaluation was done using the Statistica Cz software. Fig. 1. Map of sampling s...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Diversity of arbuscular mycorrhizal fungi in Tetraclinis articulata (Vahl) Masters woodlands in Morocco" ppsx

... and che- mical characteristics of soils, which in turn can affect the AM community structure. The diversity of AM fungi present in the rhizosphere of T. articulata (six AM fungal spore morphotypes were ... partially overcome problems of dieback of T. articulata seedlings after transplanting, as observed by Morte and Hon- rubia (1996) [20], who found that the survival of mycorrh...

Ngày tải lên : 08/08/2014, 00:22

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Báo cáo lâm nghiệp:" Response of newly planted Norway spruce seedlings to fertilization, irrigation and herbicide treatments" pps

... induction occurs in the beginning of July [18] with a rapid period of development for a period of up to six weeks [8]. The length of the leading shoot the second year after planting is therefore partly ... irrigation treatments on growth of planted Norway spruce seedlings were investigated in an experiment established in 1998 in southern Sweden. After three years, the amoun...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "Allocation of dry matter in Eucalyptus in response to nitrogen supply grandis seedling" ppsx

... and allocation of dry matter by analysis of shoot/root ratio (mass of top/mass of root) but use of this ratio has frequently led to incorrect interpretations because of failure to ... E grandis. Despite reports of (often dramatic) increases in growth of E. grandis following application of nutrients, we have little understanding of physiolog...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "Effect of storage conditions on post planting water status and performance of Pinus radiata D. Don stock-types" doc

... day of storage at 4 ºC produced the death of 40% of plants planted in wet soils (Fig. 6C) and after 15 days at 4 ºC or after 8 days at 10 ºC only 20% of BR seedlings survived. The per- centage of ... of internal water status can cause severe injury to roots (Fig. 4). The reduction of root water content as a consequence of desiccation of the root system [9] is accompani...

Ngày tải lên : 08/08/2014, 01:22

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Báo cáo lâm nghiệp: "Composition of psocid taxocenoses (Insecta: Psocoptera) in Fageti-Piceeta s. lat. and Piceeta s. lat. forests in the Western Carpathian Mts" pps

... naturalness level of forest ecosys- tems in the region of the Žďárské vrchy Hills. e aim of the systematic study of psocids, con- ducted in the Western Carpathian Mts. in years 1997–2001, was ... 0.666 Nsp – number of species, N – number of specimens, H S – Shannon-Wiener index of diversity, E S – equatibility, H B – Brillouin index of diversity, E B – equatibility In...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Reproduction of postﬁre Pinus halepensis Mill stands six years after silvicultural treatments" ppsx

Báo cáo lâm nghiệp: "Reproduction of postﬁre Pinus halepensis Mill. stands six years after silvicultural treatments" ppsx

Báo cáo lâm nghiệp: "Analysis of herbicide effects on Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) natural regeneration" ppsx