Báo cáo lâm nghiệp: "Xylem acoustic signals from mature Pinus sylvestris during an extended drought" pptx
Báo cáo lâm nghiệp: "Xylem acoustic signals from mature Pinus sylvestris during an extended drought" pptx
... standard error, n = 4. 1 Ann. For. Sci. 61 (2004) 1–8 © INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2003079 Original article Xylem acoustic signals from mature Pinus sylvestris during an extended ... Ikeda and Ohtsu [12] on 6-year-old Pinus thunbergii, and, (2) Jackson et al. [16] on a 39 year old Pinus sylvestris. In the present study, significant acoustic emissions...
Ngày tải lên: 08/08/2014, 01:22
Báo cáo lâm nghiệp: " Effects of intensive versus no management strategies during an outbreak of the bark beetle Ips typographus (L.) (Col.: Curculionidae, Scolytinae) in the Tatra Mts. in Poland and Slovakia" ppsx
... beetles in TANAP (Slovakia) and TPN (Poland) in regard to the exposure of mountain slopes. Figure 7. Mean volume of trees infested by bark beetles in TANAP (Slovakia) and TPN (Poland) in regard ... weather conditions and bark beetle activity. 3. RESULTS 3.1. Management strategies in TANAP and TPN 3.1.1. TANAP (Slovakia) During the outbreak period some modifications were made in management...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp:"The d13C of Scots pine (Pinus sylvestris L.) needles: spatial and temporal variations" pps
... also thank at INRA Nancy, Claude Bréchet for isotope analyses and Jean-Marc Guehl, Erwin Dreyer and André Granier for helpful discussions. REFERENCES [1] Boutelje J.B., On the anatomical structure, ... to distance from the main stem or to position on the branch (abaxial / adaxial); (2) the d 13 C variations of branch wood and cellulose as related to distance from the main stem, among ann...
Ngày tải lên: 08/08/2014, 01:21
Báo cáo lâm nghiệp: "Reconstructing crown shape from stem diameter and tree position to supply light models. I. Algorithms and comparison of light simulations" doc
... like to thank Bruno Garnier, Michel Pitsch and Léon Wehrlen for assistance in the field. We would also like to thank Andreas Brunner for his assistance and advice on the tRAYci model and for his ... Forêts, Nancy, 2005. [53] Pritchard J.M., Comeau P.G., Effects of opening size and stand cha- racteristics on light transmittance and temperature under young trembling aspen stands, For. Ecol. Man...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp: "Ultrasound acoustic emission in water-stressed Picea abies Karst" ppt
... loss, and an ultrasound gel was applied to improve acoustic transmission. On the same plants, the transpiration rate was measured gra- vimetrically and stomatal conductance ... physiological data and acoustic emis- sion rate between the recovered and the well-watered plants were not statistically significant. During August, the stressed plants wer...
Ngày tải lên: 09/08/2014, 04:20
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
... status and carbon partitioning in spruce: specific changes in relation to needle age and degree of needle loss. In: International Sympo- sium on Plants and Pollutants in ... for analy- sis and metabolite determination by L. Diener, B. Egger, R. Keil, J.P. Schnitzler and P. Weid- mann is gratefully acknowledged. This investi- gation was financed ....
Ngày tải lên: 09/08/2014, 04:20
Báo cáo lâm nghiệp: "Density of juvenile and mature wood of selected coniferous species" pdf
... formed during the early life of the tree. From the anatomical aspect, juvenile wood can be characterized by a gradual change of dimensions and corresponding changes in the form, structure and ... juvenile and mature wood of eco- nomically signifi cant tree species growing in the area of the Czech Republic, viz Norway spruce (Pi- cea abies [L.] Karst.), Scots pine (Pinus sylvestris...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Germination after heat treatments of Pinus tropicalis Morelet and Pinus caribaea Morelet var. caribaea seeds of west Cuban forest" potx
... drainage and an annual rainfall of 1000– 3000 mm [5]. The cones mature at the onset of the rainy season (May–October) but there is often variability among trees and stands. Cones tend to mature during ... was made up of a tree canopy of Pinus tr opicalis and Pinus caribaea var. caribaea with an average height of 12 m and 18 cm in diameter. Both species were strongly mixed and in...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "Carbon accumulation in Finland’s forests 1922–2004 – an estimate obtained by combination of forest inventory data with modelling of biomass, litter and soil" potx
... balance of forests in Finland than in the remote forests of Canada or Rus- sia [3, 25, 58] because Finland’s forests have been intensively managed and efficiently protected from natural disturbances. The ... special report of the IPCC. Land use, land-use change, and forestry, Cambridge University Press, 2000. [19] IPCC, Good practice guidance for land use, land-use change and forestry, IPCC N...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "Dendrochronology of pedunculate oak (Quercus robur L.) in an old-growth pollarded woodland in northern Spain: establishment patterns and the management history" ppt
... cm and younger than 50 years were abundant. On the other hand, in La Isla, oaks between 40 and 80 cm in diameter and between 150 and 200 years old were dominant. However, trees younger than 125, ... contrast, mean nearest-neighbour distances between trees older than 300 years did not significantly differ from the distances expected under a random arrangement of tree ages. Oaks younger than...
Ngày tải lên: 08/08/2014, 00:21