Báo cáo lâm nghiệp: " Effects of polyaromatic hydrocarbons o

Báo cáo lâm nghiệp: " Effects of polyaromatic hydrocarbons on the forest ecosystem and woody plants" pot

... Studies of the effects of phenanthrene, fluoranthene and pyrene were made on lupin mitochondria. Fig. 1 shows the effects of fluoranthene on lupin root and green cotyledon mitochondria. ... and chlorophyll degradation and could be considered as a new kind of senescence- inducing hormone. The problem of the presence in the atmosph...

Ngày tải lên : 09/08/2014, 04:20

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

... assessing the effects of treatments and trees on the position of the most proximal offspring shoot, the diameter, length and number of nodes of the largest (max.) offspring shoot, the MDR, MLR and ... at the level of the parent shoot. On the other hand, clipping a complete distal offspring shoot at the peak of its extension period increased the...

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

... estimate of the flux of elec- trons through PS II via the ETR. There was a clear separation of irradiance response due to growth irradiance acclimation among the seedlings. As 1–q P approached 1, the ... estimate of the conductance of the photosyn- thetic apparatus [44]. The large drop in the ratio seen at low PPFD in FL plants and slightly evident in HS plants, w...

Ngày tải lên : 08/08/2014, 00:22

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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

... thank the staff of the nurseries at Alice Holt Lodge and the Northern Research Station for raising the container seedlings, and the staff rooting volume held constant, ... third growing season. There was a high Hylobius population during the first two seasons, which was responsible for some of the losses. By the end of the third...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: " Comparison of deposition fluxes on the open area and in mountain spruce stands of different density" pdf

... of the studied stands. Water intercepted by the stand canopy of the sparse stand was vaporized faster than in the dense stand, the accumulation and consequen- tial conﬂux of water below the ... both in the precipitation amounts and in the annual distribu- tion of precipitation. A linear relationship between the amount of rainfall on the open area and...

Ngày tải lên : 07/08/2014, 04:20

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Báo cáo lâm nghiệp:" Effects of competing vegetation on juvenile white spruce (Picea glauca (Moench) Voss) growth in Alaska" pdf

... plant- ing and at the end of each of the first 5 growing seasons. Bonanza Creek seedlings were also measured at the end of the sixth, ninth, and eleventh growing seasons, and Fort Richardson seedlings ... height and diameter through time. Orthogonal and non- orthogonal contrasts were used to test for treatment and unit effects. These contrasts tested for slope diff...

Ngày tải lên : 08/08/2014, 01:21

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

... in 26 locations. Within each location the stands had the same soil condition, landscape position and previous land-use history. Ground vegetation and soil were sampled in each stand. The tree species ... Effect of stand age There was no significant effect of the “age” factor, or inter- action between the stand age and tree species. 4. DISCUSSION 4.1. Validity of the t...

Ngày tải lên : 08/08/2014, 01:21

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

... scrubbing because of its high combustibility potential [42] and competition effects on germination of therophytes described by Pausas et al. [32]. As a conclusion to this study, in spite of the intense ... Decrease of intra- and inter-specific competition effects must be considered for foresters in managing of early stages of succession after fire. When it’s considered...

Ngày tải lên : 08/08/2014, 01:22

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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

... the convexity of the quantum response of the potential electron transport of needles and was fixed at 0.79 (Leverenz and Jarvis, 1979). a is the initial slope of the quantum ... no studies on the effects of P deficiency on CO 2 assimilation rate in this species. In this paper, we determined the effects of P deficiency on...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: " Effects of water deficit on leaf in fast-growing tree species growth and initiation" docx

... al., 1987). Most of our knowledge on the growth of tree seedlings to date comes from field experiments such as the above. In order to further our understanding of seedling growth, the ... result of more than purely a cessation of growth. Our current studies suggest that leaf initiation is important and, as demon- strated in Fig. 3, the...

Ngày tải lên : 09/08/2014, 04:20

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