Báo cáo lâm nghiệp: "Costs of basic methods of forest landmaintenance in protective zones of high-voltage power lines in the Czech Republic" doc

Báo cáo lâm nghiệp: "Stability of the development of basic stand parameters of beech yield tables constructed on the basis of short-term observations on research plots" pptx

Báo cáo lâm nghiệp: "Stability of the development of basic stand parameters of beech yield tables constructed on the basis of short-term observations on research plots" pptx

... a small number of their repeated measure- Stability of the development of basic stand parameters of beech yield tables constructed on the basis of short-term observations on research plots R. ... 3 rd generation of yield tables, constructed on the basis of regression fitting of stand data from research plots by mathematical funct...
Ngày tải lên : 07/08/2014, 03:22
  • 10
  • 262
  • 0
Báo cáo lâm nghiệp: " Comparison of three methods to determine optimal road spacing for forwarder-type logging operations" pdf

Báo cáo lâm nghiệp: " Comparison of three methods to determine optimal road spacing for forwarder-type logging operations" pdf

... formulas. Comparison of three methods to determine optimal road spacing for forwarder-type logging operations M. R. G 1 , K. S 1 , J. S 2 1 Department of Forest and Soil Sciences, ... e total cost summary and road spacing for one-way forwarding using the forwarding model Forwarding cost (/m 3 ) Road cost (/m 3 ) Total cost (/m 3 ) C...
Ngày tải lên : 07/08/2014, 04:20
  • 9
  • 348
  • 0
Báo cáo lâm nghiệp: "Costs of basic methods of forest landmaintenance in protective zones of high-voltage power lines in the Czech Republic" doc

Báo cáo lâm nghiệp: "Costs of basic methods of forest landmaintenance in protective zones of high-voltage power lines in the Czech Republic" doc

... methods of forest land maintenance in protective zones of high-voltage power lines (HVPL) 400 kV in the protective zone of 70–80 m in width, and 220 kV in the protective zone of 50–60 m in width ... on the number of trees and tree species that would naturally regenerate in zones of HVPL or in open areas outside the forest the resu...
Ngày tải lên : 07/08/2014, 10:21
  • 6
  • 313
  • 0
Báo cáo lâm nghiệp: "Evaluation of three methods for estimating the Weibull distribution parameters of Chinese pine (Pinus tabulaeformis)" pps

Báo cáo lâm nghiệp: "Evaluation of three methods for estimating the Weibull distribution parameters of Chinese pine (Pinus tabulaeformis)" pps

... 566 J. FOR. SCI., 54, 2008 (12): 566–571 JOURNAL OF FOREST SCIENCE, 54, 2008 (12): 566–571 Evaluation of three methods for estimating the Weibull distribution parameters of Chinese pine (Pinus ... on the basis of the mean square error (MSE) and sample size. For these sample plots, the moment method was superior for estimating the parameters o...
Ngày tải lên : 07/08/2014, 10:22
  • 6
  • 332
  • 0
Báo cáo lâm nghiệp: "Studies on European beech (Fagus sylvatica L.). Part 1: Variations of wood colour parameters" pptx

Báo cáo lâm nghiệp: "Studies on European beech (Fagus sylvatica L.). Part 1: Variations of wood colour parameters" pptx

... separating peripheral wood (PW), red heartwood (RH) and non red heartwood (NRH) points (mean for 342 boards). Colour variations of European beech wood 631 Figure 6 illustrates these variations of colour for L* only ... 10.1051/forest:2005063 Original article Studies on European beech (Fagus sylvatica L.). Part 1: Variations of wood colour paramet...
Ngày tải lên : 08/08/2014, 00:22
  • 8
  • 250
  • 0
Báo cáo lâm nghiệp: "Aboveground biomass relationships for mixed ash (Fraxinus excelsior L. and Ulmus glabra Hudson) stands in Eastern Prealps of Friuli Venezia Giulia (Italy)" pptx

Báo cáo lâm nghiệp: "Aboveground biomass relationships for mixed ash (Fraxinus excelsior L. and Ulmus glabra Hudson) stands in Eastern Prealps of Friuli Venezia Giulia (Italy)" pptx

... 831 Ann. For. Sci. 62 (2005) 831836 â INRA, EDP Sciences, 2005 DOI: 10.1051/forest:2005089 Original article Aboveground biomass relationships for mixed ash (Fraxinus excelsior L. and Ulmus glabra Hudson) ... – About 5% of forest area of Friuli Venezia Giulia (Italy) is covered by mixed ash stands. In most cases, these are secondary forest establishe...
Ngày tải lên : 08/08/2014, 00:22
  • 6
  • 311
  • 0
Báo cáo lâm nghiệp: "A fire probability model for forest stands in Catalonia (north-east Spain)" pptx

Báo cáo lâm nghiệp: "A fire probability model for forest stands in Catalonia (north-east Spain)" pptx

... probability model for forest stands in Catalonia pre- sented in this study opens many possibilities to integrate the risk of fire into forest management planning and decision-making. The parameters included ... stand-level model for the probability of fire adequate for forest management planning in Catalonia. The model should use variables that are normall...
Ngày tải lên : 08/08/2014, 00:22
  • 8
  • 297
  • 0
Báo cáo lâm nghiệp:"Influence of basic density and temperature on mechanical properties perpendicular to grain of ten wood tropical species" pot

Báo cáo lâm nghiệp:"Influence of basic density and temperature on mechanical properties perpendicular to grain of ten wood tropical species" pot

... article Influence of basic density and temperature on mechanical properties perpendicular to grain of ten wood tropical species Sandrine Bardet a *, Jacques Beauchêne b and Bernard Thibaut a,c a Laboratoire ... function of temperature for one wood species (Dicorynia). Each cross represents one value of the three repetitions. Figure 7. Illustration of...
Ngày tải lên : 08/08/2014, 01:21
  • 11
  • 380
  • 0
Báo cáo lâm nghiệp:"Succession from bog pine (Pinus uncinata var. rotundata) to Norway spruce (Picea abies) stands in relation to anthropic" docx

Báo cáo lâm nghiệp:"Succession from bog pine (Pinus uncinata var. rotundata) to Norway spruce (Picea abies) stands in relation to anthropic" docx

... Succession from bog pine to Norway spruce stands 351 Table I. Vegetation tabular of the phytocoenotic relevés and their synusial relevés in the bog pine stand of phytocoenosis No 1 and in the bog pine ... A., Schweingruber F.H., Gobat J M., Stand structure, invasion, and growth dynamics of bog pine (Pinus uncinata var. rotundata) in relation to pe...
Ngày tải lên : 08/08/2014, 01:21
  • 10
  • 289
  • 0
Báo cáo lâm nghiệp: "Reconstruction of crown length of Norway spruce (Picea abies (L.) Karst.) and Silver fir (Abies alba Mill.) – technique, establishment of sample methods and application in forest growth analysis Peter SPATHELF" ppt

Báo cáo lâm nghiệp: "Reconstruction of crown length of Norway spruce (Picea abies (L.) Karst.) and Silver fir (Abies alba Mill.) – technique, establishment of sample methods and application in forest growth analysis Peter SPATHELF" ppt

... Norway spruce (Picea abies (L.) Karst.) and Silver fir (Abies alba Mill.) – technique, establishment of sample methods and application in forest growth analysis Peter SPATHELF Forstdirektion Tỹbingen, ... competition, right: Norway spruce, released; diagonal = crown length 0). Figure 9. Development of crown ratio (cr) of th...
Ngày tải lên : 08/08/2014, 01:21
  • 10
  • 556
  • 0
Báo cáo lâm nghiệp: "Fertilization at planting impairs root system development and drought avoidance of Douglas-fir (Pseudotsuga menziesii) seedlings" pot

Báo cáo lâm nghiệp: "Fertilization at planting impairs root system development and drought avoidance of Douglas-fir (Pseudotsuga menziesii) seedlings" pot

... article Fertilization at planting impairs root system development and drought avoidance of Douglas-fir (Pseudotsuga menziesii) seedlings Douglass F. JACOBS a,b *, Robin ROSE a , Diane L. HAASE a , Patricio ... the poor root development of seedlings fer- tilized at a relatively high rate in this study. We expected increased root proliferation at or above...
Ngày tải lên : 08/08/2014, 01:22
  • 9
  • 229
  • 0
Báo cáo lâm nghiệp: "Physiological, morphological and growth responses to rhizosphere hypoxia by seedlings of North American bottomland oaks" potx

Báo cáo lâm nghiệp: "Physiological, morphological and growth responses to rhizosphere hypoxia by seedlings of North American bottomland oaks" potx

... and 800 μmol m -2 s -1 . Stomatal conductance and Original article Physiological, morphological and growth responses to rhizosphere hypoxia by seedlings of North American ... stomatal and photosynthetic responses of three bottomland tree species. For Sci 32, 914- 923 Ponnamperuma FN (1984) Effects of flooding on soils. In: Floo...
Ngày tải lên : 08/08/2014, 18:21
  • 14
  • 253
  • 0
Báo cáo lâm nghiệp: "Light-quality and -quantity effects on monoterpene-mediated photo-bleaching of conifer needles" pot

Báo cáo lâm nghiệp: "Light-quality and -quantity effects on monoterpene-mediated photo-bleaching of conifer needles" pot

... Light-quality and -quantity effects on monoterpene-medi- ated photo-bleaching of conifer needles J. Franzen 1 K. Gross 2 M. Bonzon 3 E. Wagner 1 Institutes of I Biology 11 and 2 Silviculture, ... and young plants with P-pinene resulted in a monoter- pene concentration- and photofluency- dependent destruction of chloroplast pig- ments resembling t...
Ngày tải lên : 09/08/2014, 04:20
  • 3
  • 261
  • 0
Báo cáo lâm nghiệp: "Carbon partitioning: fructose 2,6-bisphosphate content as an indicator of specific changes in carbohydrate metabolism in needles from class II spruce trees" pot

Báo cáo lâm nghiệp: "Carbon partitioning: fructose 2,6-bisphosphate content as an indicator of specific changes in carbohydrate metabolism in needles from class II spruce trees" pot

... be indicative of increased partitioning of carbon into sucrose (starch decreases) and this situa- tion is obviously continued during summer. Class li -specific changes in pool ... based on dry weight) differ significantly in the levels of starch, TP and F26BP, in that class II needles show a decrease in starch, compared to in- crease...
Ngày tải lên : 09/08/2014, 04:20
  • 5
  • 175
  • 0

Xem thêm

Từ khóa: