Báo cáo lâm nghiệp: "Evaluation of changes in the landscape management and its influence on animal migration in the vicinity of the D1 motorway in Central Bohemia" ppsx

... in the framework of long-term programmes using the clonal propagation (J et al. 1994); their re- Evaluation of the growth and health status of selected clone mixtures in comparison with ... exposed locations where their observation continues and their growth and health status are compared with the ordinary planting stock of genera...

Ngày tải lên: 07/08/2014, 03:22

... shedding light on the pro- cesses and trends of squared timber and log pro- duction and the relations between them in the Hyr- canian Forests of Iran during the last 20 years. MATERIALS AND METHODS Areas ... bordering the northern part of the Alborz Mountains and ex- tend from Astara in the west of Gilan Province to Giledarreh in the east of...

Ngày tải lên: 07/08/2014, 10:21

... linear constructions include direct occupation of biotopes, recolonization of the landscape in the construction of roads, environ- mental contamination, and widely various types of interference ... quantification of the landscape macrostructure’s evolution as affected by the construction and subsequent operation of the linear structure in the form of a...

Ngày tải lên: 07/08/2014, 10:21

... of young spruces with known growth rate in a nursery and after outplanting are carried out in the framework of the grant project “Conservation of the stability and biodiversity of Norway spruce ... practice). Height and diameter growth and health status of outplantings are evaluated regularly on this research plot. A more detailed evaluation of phen...

Ngày tải lên: 07/08/2014, 10:21

... prov- enances of sessile oak: 11 Křivoklát (6.36 m) and 31 Bučovice (6.62 m) and of pedunculate oak: 12 Křivoklát (6.72 m) and 45 Strážnice (6.76 m).  e type of branching of sessile oak is character- ized ... stem shape evaluation document that fi ve provenances of sessile oak and four prov- enances of pedunculate oak had the highest propor- tion of...

Ngày tải lên: 07/08/2014, 10:21

... 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

... explains intra-tree-ring wood density change, and (2) sorting out tracheid anatomical characteristics in order of im- portance. The work was carried out with Douglas fir (Pseudotsuga menziesii (Mirb.) ... between wood den- sity and tracheid characteristics along a tree-ring, i.e. on intra- tree-ring variations. However, it is also interesting from these...

Ngày tải lên: 07/08/2014, 16:20

... between survival and RWC 36-days after transplanting in seedlings of E. globulus. subsp. bicostata Each point represents the mean value of five observations of each treatment. to plant survival and ... among prove- nances of several Eucalyptus [25, 42], between and within subspecies of E. globulus [15, 54], as well as among clones of E. globulus subsp. globu...

Ngày tải lên: 07/08/2014, 16:20

... part of a larger project that examined patterns of below- and above-ground biomass in Eu- calyptus populnea woodland ecosystems along a rainfall gradient in northeast Australia [25]. Here, data ... 247 c  INRA, EDP Sciences, 2007 DOI: 10.1051/forest:2007002 Original article Evaluation of a semi-empirical model for predicting fine root biomass in composit...

Ngày tải lên: 07/08/2014, 16:20

... and SG-ratio tested depending on thinning intensities for radiata pine and maritime pine. Pinus radiata Pinus pinaster Intensity of First thinning Second thinning First thinning Second thinning thinning ... study was to calculate the accumu- lation and the export of nutrients over time in Pinus pinaster (maritime pine) and Pinus radiata (radiata pine) stands...

Ngày tải lên: 07/08/2014, 16:21

... CONCLUSIONS In this examination of competition indices for predicting diameter growth in mixed- species forests, we found that the flexible, distance-dependent crowding index was superior to other indices, but ... based indices [6, 7, 27] is also costly to ob- tain in a forest inventory. The similarity amongst the fit of Competition indices in boreal mixed fo...

Ngày tải lên: 07/08/2014, 16:21

... especially in the 2–4 years band width. urban tree rings / sunspot number / Pacific decadal oscillation / global surface air temperature anomaly / wavelet analysis Résumé – Impact de l’activité solaire, ... Sun Y., Tao D.L. Solar activity, global surface air temperature anomaly and pacific decadal oscillation signals observed in urban outskirts tre...

Ngày tải lên: 07/08/2014, 16:21

... shallow peatlands (mainly peaty gleys) have been planted with coniferous forests, mostly Sitka spruce (Picea sitchensis (Bong.) Carr) [3]. Afforestation on peaty soils may cause an increase in ... (stand ages between 2 and 34 years old) in Florida. Afforestation on natural grassland, clearfelling and replant- ing also caused changes in the soil bulk densities, main...

Ngày tải lên: 08/08/2014, 00:22

... 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

... retained and the kind of mixed stand [33]. Finally, other recent studies concerning silvicultural aspects of Scots pine (Pinus sylvestris L.) without including GTR can be founded in Mörling [22] ... different silvicultural alternatives. The yield model was elaborated for Scots pine stands in northern Spain using 75 temporary plots from the Sec- ond National Forest I...

Ngày tải lên: 08/08/2014, 01:22