Báo cáo lâm nghiệp: "Effects of silviculture treatments on v

Báo cáo lâm nghiệp: "Effects of silviculture treatments on vegetation after fire in Pinus halepensis Mill. woodlands (SE Spain)" ppt

... that Pinus halepensis root systems restrain growth of C. monspeliensis in high density conditions after fire. Effect of fire recur- rence on Mediterranean vegetation has been also studied. In ... of competition on the root system architecture of Pinus halepensis Mill. and Cistus monspeliensis L. saplings colonizing a recently burnt area in SE Spain, in: Tr...

Ngày tải lên : 08/08/2014, 01:22

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Báo cáo lâm nghiệp: "Effects of artificial damage on the branching pattern of Nothofagus dombeyi (Nothofagaceae)" ppsx

... species, the branching system consisting of a parent shoot extended in one year and a cohort of offspring shoots extended a year later is characterized by a gradient of increasing offspring shoot size towards ... branches at the beginning of their extension would exert only a minor effect on the size gradients of branches on a common parent shoot, in contrast with the result...

Ngày tải lên : 08/08/2014, 00:22

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Báo cáo lâm nghiệp: "Effects of light intensity on the growth and energy balance of photosystem II electron transport in Quercus alba " potx

... for each measuring date using one-way analysis of variance followed by Bonferroni’s multiple comparisons. One-way analysis of variance followed by Bonferroni’s multiple comparisons was also used ... CABI Publishing, New York, 2002. [28] Lavergne J., Trissl H-W., Theory of fluorescence induction in photosystem II: Derivation of analytical expressions in a model inclu- ding excito...

Ngày tải lên : 08/08/2014, 00:22

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Báo cáo lâm nghiệp: " Effects of tree species on understory vegetation and environmental conditions in temperate forests." pps

... environmental conditions which could explain the possible changes of vegetation. To guarantee some homo- geneity among the set of studied sites, only one main type of soil was considered: non-hydromorphic ... during throughfalls [35], mineralisation [40], nitrification (e.g. [65]) and after clear-fell- ing [18]. Moreover, vegetation can influence the microflora [41] and enhance the...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "Effects of phosphate deficiency on photosynthesis and accumulation of starch and soluble sugars in 1-year-old seedlings of maritime pine (Pinus pinaster Ait)" doc

... reduction in triose- P utilization and maximal carboxylation effi- ciency in nonmycorrhizal seedlings grown with limiting phosphorus, the leaf P concentration of which being ... m -1 s -1 of PAR and ambient CO 2) increase similarly when leaf P concentration increase from 0.05 to 0.1 % dry weight. In mycorrhizal seedlings of Pinus resinosa...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Effects of seedling density on the growth of Corsican pine (Pinus nigra var. maritima Melv.), Scots pine (Pinus sylvestris L.) and Douglas-fir (Pseudotsuga menziesii Franco) in containers" ppt

... reports on the direct effects of seedling density on growth in the absence of confounding effects of cell volume. Comparisons of seedling growth in different sized containers ... correlated in Scots pine and Douglas-fir. Specification of seedling size in terms of shoot height alone is not a good measure of seedling size since height...