Báo cáo lâm nghiệp: "Divergence among species and populations of Mediterranean pines in biomass allocation of seedlings grown under two watering regimes" pps

... 10.1051/forest:2006092 Original article Divergence among species and populations of Mediterranean pines in biomass allocation of seedlings grown under two watering regimes Marìa Regina C,JoséC, ... experiment, indicating that the cultivation protocol was ineffective in hastening maturity in this species. Regarding stone pine (Pinus pinea), the...

Ngày tải lên: 07/08/2014, 16:20

... moisture of 10% and 20 km/h windspeed, while extreme burning conditions were set to fine fuel moisture of 6% and 30 km/h windspeed. All the wind values refer to 10-m open windspeeds. Fireline intensity ... F., Pines of the Mediterranean Basin, in: Richardson D.M. (Ed.), Ecology and biogeography of Pinus, Cambridge University Press, Cambridge, 1998, pp 153−170. [15] Brown J.K...

Ngày tải lên: 07/08/2014, 16:20

... even-sized plants of each species, with heights of 20−40 cm. Watering was suspended for 80 randomly-chosen individuals of each species, whereas the re- maining 10 were kept well watered. Beginning three ... sensitive of the two species to transplanting (M. Alberdi, unpublished) plants were potted in original soil of the N. nitida site, in order to standardise experimenta...

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 response of frequent tree species in the Vosges mountains, a siliceous area in northeast France, along both climate and nutrient gradients. Besides a better u...

Ngày tải lên: 08/08/2014, 00:22

... a in the model of West et al. [27], when two new links are formed in each bifurcation (n =2 in Eqs. (3–7)). In E. lanceolata, the average link length varied from 15 cm in order 6 to 75.7 cm in ... were observed in G. sepium. Figure 1. The scaling factor α (top) and allocation factor q (bottom) as a function of root diameter and link order in Erythrina lanceolata...

Ngày tải lên: 08/08/2014, 01:21

... mounds Sycamore maple is one of the noble broadleaved species. Its representation in the existing species composition of forest stands being rather low, the study of the species and mainly of its root system ... same in the two cases – similarly like the rooting depth and the length of horizontal roots – a Table 4. Vitality and mycorrhizal infection of fine roo...

Ngày tải lên: 07/08/2014, 04:20

... obtained for Scotch pine and European beech, which questions the rank- ing of Scotch pine among economic tree species, at least in the examined territory. e low accuracy of determination of ... significant increase in radial increment of Norway spruce in Austria in the period of 1961 to 1990, during which the length of growing season increased by 11 days associat...

Ngày tải lên: 07/08/2014, 10:21

... insuffi- ciency of Ca, Mg and P was recorded (Z 2003). Increased deposition of nitrogen and sul- phur in forest ecosystems in the Silesian Beskids, and deficiency of magnesium and phosphorus in ... just as in the case of phosphorus, there is a potential to increase it by weathering or by changes in chemical valence in the case of pH change. e nutrition...

Ngày tải lên: 07/08/2014, 10:21

... process against sensitivity to drought. Significant improvement of our understanding of water re- lations of trees and forest stands, in both liquid and vapour phases, has been achieved since the ... daily data) and of relative extractable soil water (REW) in: (a) beech stands (Soroe, Hesse and Hainich), (b) coniferous stands (Tharandt, Hyytiälä and Loobos), (c) Mediterra...

Ngày tải lên: 07/08/2014, 16:20

... length and root tips Total root length, including length of both tap and lat- eral roots, doubled from time of transplanting in April to first sampling in June in untreated controls and in seedlings in ... of shoot dry weight was removed in treatment (A) and 20% ± 1.8 in treatment (B) compared to the shoot dry weight of con- trol seedlings. On the day after li...

Ngày tải lên: 07/08/2014, 16:20