Báo cáo lâm nghiệp: "Evaluation of physiological and health state of Norway spruce plants with different growth rate at juvenile stage after outplanting at" pdf

... 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

... differences in the root system development and health condition were found either between the trees of identical height from self-seeding and from planting in the region of Krušné hory Mts. and in the ... 452–461 JOURNAL OF FOREST SCIENCE, 53, 2007 (10): 452–461 Root system development and health condition of sycamore maple (Acer...

Ngày tải lên: 07/08/2014, 04:20

... 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

... 266–270 Forest visitors’ opinions on the importance of forest operations, forest functions and sources of their financing L. Š Faculty of Forestry and Wood Sciences, Czech University of Life ... opinions on forest functions, on the importance of forest operations and on sources of financing for- est functions. e questions in th...

Ngày tải lên: 07/08/2014, 10:21

... 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

... higher in the west of the mountain crest than in the eastern side, leading at a value of –20 mm of WB deficit in June for 400 m of altitude in the west side of the crest and 550 m of altitude in the ... (soil conditions) and physical (climatic) variables that most strongly influence tree species composition in the forests of the Vosges Mount...

Ngày tải lên: 08/08/2014, 00:22

... sativa in the Castelli Romani Park, due to the favourable climatic and soil conditions for the species. Although the intensive exploi- tation of this area, the analysed coppice showed the great capac- ity ... indicator of potential productivity in response to changing factor [23, 25, 26, 42]. The analysis of the physiological traits trend underlined the impo...

Ngày tải lên: 08/08/2014, 00:22

... late winter to early summer, and eat foliage, shoots and acorns of oaks in summer and autumn [20]. We have carried out two different studies in these rangelands to assess the effect of post-fire natural and ... Mediterranean oaks with contrasting leaf habit after a wildfire Josep Maria E * , Abdessamad H ,JavierR Centre de Recerca Ecològica i...

Ngày tải lên: 08/08/2014, 00:22

... tremuloides and the resultant canopy gaps formed, appear to be critical for P. glauca regen- eration in mature and old stands. Natural regeneration may be enhanced by taking advantage of the advanced regeneration during ... Recruitment pattern of P. glauca seedlings changed along the chronosequence. L(t) analysis (Fig. 4) showed that the spatial distribution...

Ngày tải lên: 08/08/2014, 01:22

... even in the absence of fire. ECOPHYSIOLOGICAL ATTRIBUTES OF EASTERN OAK SPECIES The studies reviewed in the previous sec- tions indicate that eastern oak species have expanded ... on the gently rolling till plains of Ohio and Indi- ana, and with Tilia americana in south- western Wisconsin, northwestern Illinois, northeastern lowa...

Ngày tải lên: 08/08/2014, 18:21

... canopy conductance and stand transpiration of an oak forest from sap flow measurements A Granier, N Bréda Équipe bioclimatologie et écophysiologie, unité d’écophysiologie forestière, Centre ... Weir PL (1992) Tran- spiration and canopy conductance in a pristine broad- leaved forest of Nothofagus: an analysis of xylem sap flow and...

Ngày tải lên: 08/08/2014, 18:21