Báo cáo lâm nghiệp: " Relationships between browsing damage and woody species dominance" doc

... dominance of a species (D) with the difference in damage to a given tree species and damage to all species (DifPD) and the proportion of damage to a given species and damage to all species (RPD) y ... attractive species – D attrac = (N attrac /N all ) × 100; • a difference between damage to a species and dam - age to all species DifPD = PD sp –PD all ; • a...

Ngày tải lên: 07/08/2014, 10:21

... Kellomäki S., A model for the relationships between branch num- ber and biomass in Pinus sylvestris crowns. Effect of crown shape and stand density on branch and stem biomass, Scand. J. For. Res. 1 (1986) ... Influence of progeny and initial stand density on the relationship between diameter at breast height and knot diameter in Picea abies, Scand. J. For. Res. 14 (1999) 470–4...

Ngày tải lên: 08/08/2014, 01:22

... the existence of and lack of a trade-off between xylem conductance and vulnerability to cavitation have been documented. In this study, we concentrated on certain coexisting species from the ... adaptation to drought, ranging from species well adapted to drought such as Acer monspessulanum L. and Acer opalus Mill., to water-demanding species such as A. negundo L. and A. pseudo...

Ngày tải lên: 08/08/2014, 01:22

... out a slight correlation between the aboveground parameters and the thickness of root plates; and no correlation was determined between the crown proportion index and root plate parameters. ... correlation between the root plate width and the dbh than be- tween the root plate depth and the dbh. His results partially correspond to our results because we have not found out an...

Ngày tải lên: 07/08/2014, 10:22

... interaction between site and stocklot, then correlations were performed specifically for each site (relationships between the outplanting performance with the stocklot quality) and for each stock- lot (relationships ... geological and historical land-use factors that have caused soil erosion and degradation. Dur- ing the last 30 years, important and reiterated wildland fires, ma...

Ngày tải lên: 07/08/2014, 16:21

... Nederlandse Paddesstoelen. A.A. Balkema, Roterdam, Brookfield, 1995. [29] Oosterbaan A., Nabuurs G.J., Relationships between oak decline and groundwater class in the Netherlands, Plant and Soil ... –0.18 and –1.70, probabilities higher than 0.14). 3.5. Relationship between Q. robur crown health status, soil factors, damages induced by C. fusipes and presence of Phytophthora I...

Ngày tải lên: 08/08/2014, 01:21

... of the section and straightness of the ring limits. The selected widths were 3000 µm for Finland spruce, France spruce and France fir; 1500 µm for France pine and South Finland pine and 1000 µm ... material from three important softwood species, a further and useful development could be to test how and if it is possible to determine, for a given and known species, the tracheid...

Ngày tải lên: 08/08/2014, 01:22

... s –1 bins between 0 and 50 µmol m –2 s –1 and in 100 µmol m –2 s –1 bins between 50 and 2050 µmol m –2 s –1 . PPFD was simultaneously recorded for the individuals in the understorey and in ... of the ASD, see Materials and methods. Tree structure, and functional leaf traits 559 3.3. Bivariate and multivariate relationships between morphological, anatomical and fu...

Ngày tải lên: 08/08/2014, 00:22

... abundances and of (b) deci- duous stands based on woody species abundances (Ward’s method, indicator species determined following Dufrêne and Legendre [19], only species with P < 0.001 are reported). 712 ... South, called ‘Gut- land’, has more recent geological layers of sandy and calcareous rocks, from the Triassic and Jurassic periods. It mainly consists of rolling farmla...

Ngày tải lên: 08/08/2014, 01:22

... Ecology and Management, 254: 239–254. S T.P., S D.S., L P.M.F., R D.B. (2009): Stand structure and the abundance and diver- sity of plants and small mammals in natural and ... survey the extent of damage caused by rodents to the regeneration of forest tree species in the Czech Republic and to demonstrate possible solutions of rodent damage. MAT...

Ngày tải lên: 07/08/2014, 10:21