Báo cáo lâm nghiệp: " Non-indigenous plant species and their

Báo cáo lâm nghiệp: " Non-indigenous plant species and their ecological range in Central European pine (Pinus sylvestris L.) forests" ppt

... occurring species using a cluster analysis and ecologically characterized employing the ecological indicator values for Central European plant species from Ellenberg et al. [15]. The following hypotheses ... applying Ellenberg’s ecological indicator values. Out of a total of 362 taxa recorded in the pine forests, only 12 non-indigenous species, including trees, shrubs,...

Ngày tải lên : 08/08/2014, 00:22

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Báo cáo lâm nghiệp: "Biomass functions applicable to oak trees grown in Central-European forestry" doc

... of trees at all sites was conducted in early spring before bud break. All selected trees were measured both standing and lying on the ground after felling. All basic measurable information ... requires locally pa- rameterized allometric equations, optimally based on representative and large sampling. In practice, however, sampling is limited since biomass studies are generally v...

Ngày tải lên : 07/08/2014, 10:21

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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

... II electron transport in Quercus alba seedlings, Ann. For. Sci. 63 (200 6) 111–118. [50] Weiner J., Allocation, plasticity and allometry in plants, Perspect. in Plant Ecol. Evol. Syst. 6 (200 4) ... shoots (level 6), while most were in level 5 and some remained in level 4. On the contrary, the relatively high score attained in P. pinea was exclusively due to the abun...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Comparison of nitrogenase and nitrate reductase activities in two nitrogen-fixing tree species: black alder (Alnus glutinosa) and black locust (Robinia pseudoacacia)" pdf

... typical actinorhizal (frankial) and leguminous (rhizobial) woody species, respectively. Important differences be- tween both species concern their biologi- cal, ecological and symbiotic ... glutino!;a. Materials and IMethods Plant material was harvested in the early afternoon from 1! 3-20 yr old black alders natu- rally growing on sandy alluviu...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "Characterizing fertility targets and multi-element interactions in nursery culture of Quercus rubra seedlings" pot

... 52]. Incorporating nutritional as well as morphological standards (Figs. 1 and 2) in planting stock quality assessment programs could improve diagnostic reliability. Although the quantified indices ... Additionally, plant samples were digested in nitric + perchloric acids (AOAC 935.1 3), and P and K determined using inductively coupled argon plasma (ICAP) analysis (AOAC 985.0...

Ngày tải lên : 08/08/2014, 00:22

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Báo cáo lâm nghiệp: "Litterfall, nutrient return, and leaf-litter decomposition in four plantations compared with a natural forest in subtropical China" ppt

... leaf litter samples including lignin, cellulose, hemicellulose, coarse protein, alcohol, and water soluble compounds were determined by the proximate chemical analysis [43]. All chemical analyses ... leaf litter of dominant tree species in their respective stands. In April 1999, freshly fallen/senescent leaves from tree species in four plantations and from C. kawakamii in th...

Ngày tải lên : 08/08/2014, 01:22

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Báo cáo lâm nghiệp: "Growth dynamics, transpiration and water-use efficiency in Quercus robur plants submitted to elevated CO 2 and drought " pdf

... from the

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Aboveground litter production and bioelement potential return in an evergreen oak (Quercus rotundifolia) woodland near Salamanca (Spain)" docx

... essential ecological phenomenon in natural biocenosis, in par- ticular in forest populations (Rapp, 196 9). In a forest ecosystem, in general, annual plant production is mainly ... soil (McClaugherty et al, 198 2), as well as an amount of nutrients readily available and reutilizable by the plant cover (Rapp and Leonardi, 198 8). In...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Winter moisture content and frost-crack occurrence in oak trees (Quercus petraea Liebl. and Q. robur L.)" ppt

... leur sensibilite à la g6livure. AcMs du Colloque europeen de Rh6ologie du Bois, Bordeaux, 1988 Heller D. (197 9) L arbre et I’agriculture. Bull. Vulg. For. 5, 16 6 Hinckley ... chen<!s (Quercus robur L. et Q. petraea Liebl .) sur leur sensibilite A la g6livure. D.E.A. Sciences du Bois, INRA, Nancy Cinotti B. & Tahani N. (198 8) Infl...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp:"Effect of tube shelters on the growth of young Turkish pines (Pinus brutia Ten., Pinaceae)" pptx

... chalky soil. The planting alternated one row of one-year seedling pines and five rows of vines. The pines were planted 2 m apart along the row, alternating trees with and without tube shelters. ... of cylindri- cal beige tubes were used: 120 cm tall and 10 cm in diameter (small diameter), and 120 tall and 15 cm in diameter (large diameter). Fifty individuals without and 43 wit...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: " Non-indigenous plant species and their ecological range in Central European pine (Pinus sylvestris L ) forests" ppt

Báo cáo lâm nghiệp: " Non-indigenous plant species and their ecological range in Central European pine (Pinus sylvestris L.) forests" ppt

Báo cáo lâm nghiệp: "Biomass functions applicable to oak trees grown in Central-European forestry" doc