Báo cáo lâm nghiệp: " Selected physical properties of initial soils on the outside spoil bank of the Bełchatów brown coal mine" pot

... purpose of the study was to assess, in respect of selected physical properties, the reclamation of the northern slope of the outside spoil bank of the Bełchatów brown coal mine by reforestation carried ... reclamation by reforestation. CONCLUSIONS After 20 years since the beginning of reclamation of the northern slopes of the outside spoil...

Ngày tải lên: 07/08/2014, 03:22

... concentrations during defence response in Nor- way spruce embryogenic cell suspension cultures induced by intracellular protein and wall prepara- tions from Sirococcus strobilinus mycelia. MATERIAL AND METHODS Plant ... embryo- genic cultures of Norway spruce (C) and in the cells elicited by mycelium protein fraction (PF) and mycelium wall frac- tion (W...

Ngày tải lên: 07/08/2014, 10:21

... concentrations and fl uxes in bulk precipitation and throughfall in the mountain and highland spruce stands in the Czech Republic I. D, L. M, J. K, I. M Institute of Forest ... radiation and to hold the funnels approximately 1 m above the ground.  ere were 7 collectors randomly dis- tributed at the mountain spruce stand a...

Ngày tải lên: 07/08/2014, 10:21

... diversity across landscapes and regions: a hierarchical analysis of alpha, beta, and gamma diversity. American Naturalist, 162: 73 4–7 43. FEENY P., 1970. Seasonal changes in oak leaf tannins and ... rubra 0.1 1 10 100 1000 Psychidae Tineidae Bucculatricidae Gracillaridae Ypsolophidae Oecophoridae Coleophoridae Gelechiidae Tortricidae Pyralidae Limacodidae Lycaenidae Drepanidae Geome...

Ngày tải lên: 07/08/2014, 10:22

... from transplanting until September was 229% in untreated controls, 147% in seedlings in which whorl and lateral buds and whorl branch tips had been removed and 79% where whorl and lat- eral buds and whorl branches ... at transplanting: Whorl and lateral buds and whorl branch tips removed A(), whorl and lateral buds and whorl branches removed B (...

Ngày tải lên: 07/08/2014, 16:20

... especially in the 2–4 years band width. urban tree rings / sunspot number / Pacific decadal oscillation / global surface air temperature anomaly / wavelet analysis Résumé – Impact de l’activité solaire, ... Sun Y., Tao D.L. Solar activity, global surface air temperature anomaly and pacific decadal oscillation signals observed in urban outskirts tre...

Ngày tải lên: 07/08/2014, 16:21

... situation, but at least on a regional scale, then storm damage can be expected to occur more often on acidic soils. We therefore hypothesised that storm damage would be more frequent on sites ... susceptible to storm damage ([10, 40], this study). Thus it is possible that storm damage is not related directly to low soil pH, but is only more frequent in...

Ngày tải lên: 08/08/2014, 00:21

... 0.79 N-NH 4 + N-NO 3 32.0 ì PRECIPITATION + 91.7 0.88 Table II. Mean composition (%) of the sandstone layers. Senones Vosgian Conglomerate Intermediate sandstone sandstone sandstone SiO2 81.46 92.70 91.19 ... composed of Senones sandstone, Vosgian sandstone, Conglomerate and Interme- diate sandstone (Tab. II). The “Senones sandstone is a soft layer composed of successive bands of...

Ngày tải lên: 08/08/2014, 00:22

... for Maritime pine stands at the stand scale and at the tree scale, within this general framework. 4.1. Vulnerability to wind at the stand scale 4.1.1. Stand density and the damping stand effect Thinning ... pinaster Aït. stands in Southwest France: influence of stand density, fertilisation and breeding in two experimental stands damaged...

Ngày tải lên: 08/08/2014, 01:21

... 2003 DOI: 10.1051/forest:2003017 Original article Inter-regional variability in site index models for even-aged stands of stone pine (Pinus pinea L.) in Spain Rafael Calama a *, Nieves Cañadas b ... Interregional site index curves for Pinus pinea L. in Spain. Inter-regional site index variability 263 Equality of both models is tested by co...

Ngày tải lên: 08/08/2014, 01:21

... scat- tered [12]. In this study nitrogen (N) , phosphorus (P) and potassium (K) concentrations (g/kg) in mature and fresh-litter leaves and absolute and proportional N and P resorption leaves of J. ... respect to absolute and proportional N concentrations and N concentration of mature leaves. For example, there was a significant and negative cor- relation between...

Ngày tải lên: 08/08/2014, 01:21

... slightly damaged plots with a remaining basal area ≥ 80% of the original (mean logging intensity = 6 trees ha –1 ). Plots belonging to G2, had a remaining basal area varying between 70 and 79% of the ... large areas. Moreover, matrix models can also pre- dict in a robust way and as reliably as other approaches, stand structure (density, basal area and diameter distribution)...

Ngày tải lên: 08/08/2014, 01:21

... original Diversité allozymique de peuplements de cyprès naturels et introduits au Maroc : conséquences pour la gestion des ressources Abdelkarim BECHIR a , Abdelhamid EL MOUSADIK a , Christian PICHOT b * a Laboratoire ... et d’autre part sur la participation des populations locales et des services forestiers à la préservation des peuplements...

Ngày tải lên: 08/08/2014, 01:22

... 2004 DOI: 10.1051/forest:2004011 Note Argan (Argania spinosa (L.) Skeels) seed germination under nursery conditions: Effect of cold storage, gibberellic acid and mother-tree genotype Mohamed ALOUANI, ... effect of GA and cold in the case of argan seed germination. From the results of this study, dormancy can be broken using GA or cold s...

Ngày tải lên: 08/08/2014, 01:22

... 19, 65-84 Changes in endogenous cytokinins during flowering induction in Douglas fir: effect of exogenous applications N. Imbault P. Doumas 2 C. Joseph M. Bonnet-Masimbert 2 1 ... flowering in forest trees by gibberellin A4/7 and cultural treatments: a review of the possible mechanisms. For. Ecol. Manage. 19, 65-84 Changes in endogenou...

Ngày tải lên: 09/08/2014, 04:20