Báo cáo lâm nghiệp: "Climatic signal in annual growth variation of silver ﬁr (Abies alba Mill ) and spruce (Picea abies Karst ) from the French Permanent Plot Network (RENECOFOR)" ppsx

Báo cáo lâm nghiệp: "Climatic signal in annual growth variation of silver ﬁr (Abies alba Mill.) and spruce (Picea abies Karst.) from the French Permanent Plot Network (RENECOFOR)" ppsx

... articleClimatic signal in annual growth variation of silver fir (Abies alba Mill. ) and spruce (Picea abies Karst .) from the French Permanent Plot Network (RENECOFOR)François L*UMR INRA-ENGREF ... latewood and total ring-width chronologies of five Norway spruce (Picea abies) and six silver fir (Abies alba) stands sampled in the French permanent plot network (RENECOFOR) (327 trees). The relationships ... (Tab. IV). Sig-nificant growth decreases were also observed in 1973 (Picea abies) and 1991 (Abies alba) . Common growth increases oc-curred in 1977, 1969 and 1955 for Abies alba and in 1963 forPicea...

Báo cáo lâm nghiệp: "Climatic signiﬁcance of tree-ring width and intra-annual density ﬂuctuations in Pinus pinea from a dry" pdf

... false rings and other intra -annual density fluctuations (IADFs). In this paper, ring growth and the presence of IADFs were studied in Pinus pinea L.growinginthecoastal and inland regions of Alentejo ... chronologies of Pinus pinea growing in the coastal and in the inland area. The dot line represents the number of cores used.3.3. Intra -annual density fluctuationsFor both areas, the four types of IADFs ... Schweingruber F., Intra- annual tree-ring parameters indicating differences in drought stress of Pinus sylvestris forests within the Erico-Pinion in the Valais(Switzerland), Plant Ecol. 163 (2002)...

Báo cáo lâm nghiệp: "Mineral nutrition in relation to the Norway spruce forest decline in the region Horný Spiš (Northern Slovakia)" docx

... ( 3): 93–100 97lings from the forest nursery planted in the substrate from the declining forest stand, 6 – spruce seedlings from the nursery planted in the soil substrate from the beech stand).An ... yellowing and green seedlings were planted in the soil from the decomposing stand and compared with both yellowing and green seedlings planted in the soil from the beech stand (Table 8). Phenomena ... 53, 2007 ( 3): 93–100 95– Spruce seedlings from the tree nursery in the soil substrate from the air-pollution plot Hliníky (10 seedlings);– Spruce seedlings from the nursery in the soil sub-strate...

Báo cáo lâm nghiệp: "Species composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warming" doc

... share of 88.7% in the number of trees and 84.9% in the total stand volumes. Additional tree species include ﬁr (5.7% in the tree count and 9.5% in stand volumes) and sycamore (3.8% and 3.5% ... that the most important tree species in beech forests in the Bieszczady Mountains are beech, ﬁr (Abies alba Mill. ) and sycamore (Acer pseudoplatanus L .). e analysis of the structure of the ... that the total rise in temperature in the immediate vicinity of the Carpathians and Tatras in the course of the current warming process is typical of Central Europe. Between 1881 and 1990 the...

Báo cáo lâm nghiệp: "Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna" docx

... chemical thinning consists in the fact that trees killed by chem-ical treatment and left in the stand to their natural Chemical thinning in blue spruce (Picea pungens Engelm .) stands and its ... condition of the phloem occur in standing stem breaks in young spruce stands broken by snow or in older stands after wind breakages. Such stem breaks in spruce stands of the 2nd and 3rd ... stems is interesting. is type of dieback and species spectrum are close to qualitative changes in the phloem and the structure of fauna on standing spruce breaks in stands of the 2nd and 3rd...

Báo cáo lâm nghiệp: "Multifunctional forestry practices as a land use strategy to meet increasing private and public demands in modern societies" ppt

... addresses the time perspective (permanent and continuing), the kinds of activities (maintaining and creating), the objectives (needs and goals), and the qualifying criteria (optimal fulﬁlment).Management ... ( 6): 290–298 and managing responsibly. Openness and ﬂexibility in reacting to changing societal needs and values, understanding of the ecological, social and economic drivers determining their ... however, was the regeneration of forests over large areas and the management of uniform stands. In the plains and foothills, the in- troduction of sustainable wood production during the 19th...

Báo cáo lâm nghiệp: "Timber harvesting in the ukrainian carpathians: Ecological problems and methods to solve them" ppsx

... sampling. Before the beginning of investigations the radius of turns, lengths of linear plots, weight and geometrical parameters of a tractor were determined. Samples of the undamaged layer of ... us-ing engineering structures and drainage and have rather large longitudinal inclines, which in most cases does not allow using them for the passage of wheeled machinery skidders and tractors ... erosion) of skidding tracks used for the traﬃc of wheeled and crawler machinery were determined (Table 3). eir analysis suggests that the density of skidding track network and portion of the...

Báo cáo lâm nghiệp: "Multiaged silviculture in North America" potx

... O’H 200 7), and mixed Norway spruce (Picea abies) /Scots pine (Pinus sylvestris) in Finland (O’H et al. 200 1). ese models provide a ﬂexible user interface and can predict volume increment, ... diameter in the distribution, and “q” a measure of the slope of the relationship. is “q” is a simple ratio of the number of trees in one diameter class to the number of trees in the next ... silviculture and is often found in multiaged stands of natural origin because of frequent, low-severity ﬁres. A variety of methods were used for controlling stock-ing (see O’H 200 2) including initially...

Báo cáo lâm nghiệp: "Available nitrogen in the surface mineral layer of Serbian forest soils" docx

... (200.47 mg of N per pot) and the lowest on Chernozem (127.80 mg of N per pot). Inorganic forms of N availability in soil e total content of C and N in the examined soils (Table 3) is in the range ... nitrogen fractions originating from the fertilizer (Ndﬀ ) and soil (Ndfs ) in the experimental crop (mg N per pot) and the obtained A-values in the investigated soils (± SD)Parameters Chernozem ... –0.97 6) and with the amount of mineralized and nitriﬁ ed N ob-tained by aerobic incubation (P ≤ 0.01; r = –0.959 and P ≤ 0.05; r = –0.96 6). On the other hand, Ndfs in the crop and in straw...

Báo cáo lâm nghiệp: "Seasonal fluctuation in germination of short and longterm stored Norway spruce" ppsx

... 2002. Seasonal and chilling eﬀect on germination of Norway spruce (Picea abies (L .) Karsten) and Scots pine (Pinus sylvestris L .) seeds. In: Proceedings 2002 Annual Meeting of IUFRO 2. 09. ... E(Ym ) 2 + B2 ( 4) e ﬁrst element E(Ym ) is the error of determining the germination parameter (GE, GC) for a tested seed lot from the sample of N seeds, and can– either be taken from the ... also in summer. The aim of this study is to test the fluctuation in germination energy and germination capacity of the seed of Norway spruce (Picea abies [L.] Karst .) during a year and to...

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