Báo cáo lâm nghiệp: "How the absolute growth rate of poplar

Báo cáo lâm nghiệp: "How the absolute growth rate of poplar adapts to the light-NO -dosage 3 G.A. Pieter" pot

... growth rate of such a branch cannot adapt to irradiance via these growth patterns. A poplar plant adapts its absolute growth rate to high irradiance by a gradually faster ... that the absolute growth rate of a branch adapts in a way similar to that of nitrate dosage. As the availability of (reduced) nitrate in the...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp:"Decline in relative growth rate of 3 juvenile radiata pine clones subjected to varying competition levels in Canterbury, New Zealand" pptx

... relative growth rate (RGR), has interested growth analysts for a long time. Relative growth rate [3] or efficiency index [2] is defined as the “ratio of growth of an organism to its initial size” ... physiological ageing [19]. Blackman [2] sug- gested that RGR would remain constant provided that unit leaf rate (ULR) and leaf area ratio (LAR) remained constant. Unit lea...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: " Pointer years and growth in Turkey oak (Quercus cerris L) in Latium (central Italy). A dendroclimatic approach" docx

... of year t. Subsequently, a response function was calculated using the global array of climatic data as an independent variable and the mean total residual curve as a ... more appropriate to speak generally about pointer years as we do not wish to restrict the meaning of the present paper to the sole analysis of annual widths. I...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "How to identify larvae of the protected species: Dioszeghyana schmidtii (Diószeghy 1935), and survey its presence and abundance (Lepidoptera: Noctuidae; Hadeninae)" pot

... species. Collecting the larvae from branches of host trees by using beating trays has several advantages (1) One of the biggest advantages is that number of larvae (mainly immature stages) is higher than the ... Kulfan); Fig. 13. Larva of Agrochola sp. (photo: Turčáni); Fig. 14. Larva of Anorthoa munda (photo: Turčáni); Fig. 15. Larva of Tiliacea sulphurago (photo: Turčán...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp:" How to relate the standing tree shape to internal wood characteristics: Proposal of an experimental method applied to poplar trees" pptx

... coordinates of the targets in the image completed by a manual measurement of the distance between the plane containing the surface of the disc and each target. 2.5. Spatial reorganisation of the data The ... controlling the motion of the robot and the rotation of the log to set the laser spot manually. These measurements were added to the set of...

Ngày tải lên : 08/08/2014, 01:21

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Báo cáo lâm nghiệp: " Humus conditions and stand characteristics of artificially established young stands in the process of the transformation of spruce monocultures" pdf

... e mean annual air temperature of the area is 6.5°C and the mean annual precipitation 717 mm (H 2002). The Forest Management Institute (Brandýs nad Labem) has classified potential growth ... the regulator of runoff of rainfall water in watersheds, decreases the hazard of floods in piedmont and lowland regions, intercepts consider- able amounts of rainfall water pen...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Can 13C stable isotope record of Norway spruce tree rings display the effect of environmental conditions" pot

... main objective of our study was to enlarge the data set and to validate the ﬁnding that the tree physiological activity was negatively a ected by atmospheric depositions and soil acidiﬁcation ...  13 C has been increasing since the early 1990s, indicating biological recovery. DISCUSSION Variation in the 13 C isotopic signal at the end of the 19 th century...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Soil environment and nutrient status of Norway spruce (Picea abies [L.] Karst.) underplantings in conditions of the 8th FAZ in the Hrubý Jeseník Mts" potx

... proﬁ les applying the FAO WRB in- ternational classiﬁ cation. Evaluation of underplanting damage  e degree of damage to underplantings was evaluated on each research plot, based on the fre- quency ... accord- ing to the chosen method (I 1990) in order to compare damage in the particular localities and for further statistical evaluation. It is a 5-degree scale sho...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "How does legacy of agriculture play role in formation of afforested soil properties" ppsx

... have to be regarded as a “transitive” stage of forest devel- opment because of pioneer character of such ﬁrst- generation forest stands. Even though the legacy of agricultural practices may have ... older than 10 years; A orestation_50 – the stands at the age of approxi- mately 50 years Degree of base cation saturation 0 10 20 30 40 50 60 70 80 90 Forest land Affor...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "How do lepidopteran seasonal guilds differ on some oaks (Quercus spp.) – A case study" pdf

... diversity across landscapes and regions: a hierarchical analysis of alpha, beta, and gamma diversity. American Naturalist, 162: 734 –7 43. FEENY P., 1970. Seasonal changes in oak leaf tannins and ... beginning of July to the beginning of August; and autumn feeders (AF) – this group hatched in the second half of August and the beginning of September and was feeding o...

Ngày tải lên : 07/08/2014, 10:22

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Báo cáo lâm nghiệp: "How the absolute growth rate of poplar adapts to the light-NO -dosage 3 G A Pieter" pot

Báo cáo lâm nghiệp: "How the absolute growth rate of poplar adapts to the light-NO -dosage 3 G.A. Pieter" pot

Báo cáo lâm nghiệp:"Decline in relative growth rate of 3 juvenile radiata pine clones subjected to varying competition levels in Canterbury, New Zealand" pptx