Báo cáo lâm nghiệp: "Response of the Norway spruce (Picea abies [L ] Karst ) root system to changing humidity and temperature conditions of the sit" ppt
Báo cáo lâm nghiệp: "Response of the Norway spruce (Picea abies [L.] Karst.) root system to changing humidity and temperature conditions of the sit" ppt
... 6215648902, and the Ministry of Agriculture of the Czech Republic, Project QG 60060.Response of the Norway spruce (Picea abies [L. ] Karst. ) root system to changing humidity and temperature conditions ... (anchors) at the place of measurement (in mm2 ) to the length of the aboveground part of tree in cm. e greater the Index p value, the larger the root system of the tree.Fine roots (< 1 mm) ... (see Rooting depth of the whole root sys-tem). As the result of disqualification of anchors (due to their rots) the original rooting depth diminished in injured trees (see Rooting depth of the...
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Báo cáo khoa học: "Growth and fructification of a Norway spruce (Picea abies L. Karst) forest ecosystem under changed nutrient and water input" doc
... decreased to below 50 kg at the beginning of the 1990s and today to just above 30 kg. Incontrast, the total amount of nitrogen deposition, com-posed almost of equal amounts of ammonium (N-NH4 ) and ... nitrogen and magnesium contribute one third and calcium a quarter to the total amount.2.2. The spruce stand The spruce stand is the second generation of this treespecies, which replaced the natural ... (Luzulo-Fagetum). The spruce stand was planted in1933 and as a result of several silvicultural measures wasthinned to 900 trees ha–1by the beginning of the project(199 0). The stand was then 57...
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Báo cáo lâm nghiệp: "Current possibilities of using Norway spruce (Picea abies [L.] Karst.) in forest regeneration in the air-polluted region of the northeastern Krušné hory Mts" doc
... Norway spruce (Picea abies [L. ] Karst. ) in the regen-eration of existing Norway spruce stands, in the regeneration of large-area clearcuts, and in the reconstruction of the stands of substitute tree ... Agriculture of the Czech Republic, Project No. QG 60060.Current possibilities of using Norway spruce (Picea abies [L. ] Karst. ) in forest regeneration in the air-polluted region of the northeastern ... conditions of the Bohemian-Moravian Upland) and stands on the mechanically drained GFTs 7R and 8G. Results show that the growth of Norway spruce in the Krušné hory Mts. on these groups of forest...
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Báo cáo lâm nghiệp: "Water relations of adult Norway spruce (Picea abies (L) Karst) under soil drought in the Vosges mountains: whole-tree hydraulic conductance, xylem embolism and water loss regulation " ppsx
... and the total hydraulic conductancefrom the soil to the leaves. It is thereforenecessary to analyze the concurrentchanges in Ψsoil, GL and Fto understand the ... higher in the trunk and the roots. This supposes that the vulnerability of these organs is comparable to that of the branch, which may not be the case (Sperry and Saliendra, ... and Cui, 199 2). An important objective of this study was to analyze the stomatal responses of spruce to soil water deficits. Stomata are known to close in the presence of a drought,...
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Báo cáo khoa học: "Water relations of adult Norway spruce (Picea abies (L) Karst) under soil drought in the Vosges mountains: water potential, stomatal conductance and transpiration" ppsx
... cm·s-1.After the rain at the end of August and the beginning of September, and rehydration of the dry plot, the gs in both plots recov-ered to the pre-stress value. The decreases ... Over the period from days 165 to 285, the total sums of TM, Tw and Td were252, 190 and 150 mm, respectively.Stomatal control of trees and stand transpiration The seasonal ... betweengc and gs corresponded approximately to the developed leaf area of the stand, asstated in equation [ 5]. Original articleWater relations of adult Norway spruce (Picea abies...
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Báo cáo lâm nghiệp: "Multivariate statistical approach to comparison of the nutrient status of Norway spruce (Picea abies [L.] Karst.) and top-soil properties in differently managed forest stands" potx
... 199 2). Norway spruce (Picea abies [L. ] Karst. ) is the main edificator and stand-forming tree species in mountain spruces stands of Central Europe. e timberline is running quite near the Praděd ... 199 8). Alternatively to CLU multi-variate analysis of variance (MANOVA) was applied. CLU and MANOVA were used to evaluate the close-ness of the nutrient status of the spruce stands and to ... (Picea abies [L. ] Karst. ) is the main edificator and stand-forming tree species. We evaluated the soil properties of H- and Ep-horizons at selected sites with Haplic and Skeletic Podzols and they...
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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
... MŁ S. (200 8): Stability of Norway spruce (Picea abies [L. ] Karst. ) stands in the Beskid Ś laśki and beskid Žywiecki Mts. from the aspect of their nutrition status.Journal of Forest Science, ... proportion of these elements in the assimilatory organs of Norway spruce. – High uptake of toxic elements (Al, S) is another factor negatively infl uencing the Norway spruce nutrient status in the ... 2011 ( 4): 141–152 141JOURNAL OF FOREST SCIENCE, 57, 2011 ( 4): 141–152Soil environment and nutrient status of Norway spruce (Picea abies [L. ] Karst. ) underplantings in conditions of the 8th...
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Báo cáo lâm nghiệp: "Stability of Norway spruce (Picea abies [L.] Karst.) stands in the Beskid Śląski and Beskid Żywiecki Mts. from the aspect of their nutrition status" pptx
... regionalization of Poland (T et al. 199 0), the area of the present research is located in Carpathian Region Stability of Norway spruce (Picea abies [L. ] Karst. ) stands in the Beskid Śląski and ... study is to determine the stability of spruce stands in the areas of threat to forest stability in the light of the assessment of their nutrition.Research areaAccording to the nature and forest ... disintegra-tion (STH) (Table 4). SUMMARIZATION AND CONCLUSIONSe degree of threat to spruce stands and the degree of degradation of their sites depends on the origin, species composition, period of the influence...
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Báo cáo lâm nghiệp: "Effect of initial height of seedlings on the growth of planting material of Norway spruce (Picea abies [L.] Karst.) in mountain conditions" ppsx
... ways of nursery cultivation and sorting the planting material of mountain provenances of Norway spruce (Picea abies [L. ] Karst. ) are connected with the risk of undesirable narrowing of the genetic ... characteristics of four-years-old Norway spruce (Picea abies [L. ] Karst. ) plants used for planting or put into Jiffy pots (spring 199 4) Variant Size at the time of transplantingShoot height (cm) Root ... grades).A part of the plants was set out as bare-rooted ones (2 + 2) in spring 1994, the other part of the variants “small” and “medium” was put into containers (Jiffy pots) and set out onto the same...
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Báo cáo lâm nghiệp: "Comparison of morphological and physiological parameters of the planting material of Norway spruce (Picea abies [L.] Karst.) from intensive nursery technologies with current bareroot plants" ppt
... 199 0). Comparison of morphological and physiological parameters of the planting material of Norway spruce (Picea abies [L. ] Karst. ) from intensive nursery technologies with current bareroot ... bareroot and container plants of Norway spruce (Picea abies [L. ] Karst. ). Based on the results of this experiment, there exist marked differences in basic morpho-logical traits between bareroot ... et al. 199 6). is is the reason why we carried out a detailed investiga-tion of differences between plantable bareroot and container plants of Norway spruce (Picea abies [L. ] Karst. ) in 2006....
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