Báo cáo lâm nghiệp: "Nutrient status and field performance of tree seedlings planted in Mediterranean degraded areas" doc

... 10.1051/forest:2006003 Original article Nutrient status and field performance of tree seedlings planted in Mediterranean degraded areas Alejandro VALDECANTOS a,b *, Jordi CORTINA c , V. Ramón VALLEJO a a Centro ... (SL) and root collar diameter (RCD) of seedlings of Pinus halepensis and Quercus ilex 2.5 years after out- planting in eight degraded woodland...

Ngày tải lên: 08/08/2014, 00:22

... Mill. living trees dead trees living trees dead trees living trees dead trees living trees dead trees living trees dead trees living trees dead trees Traditional parameters number of valid ... 1997–2003 Fagus sylvatica L. living trees dead trees living trees dead trees living trees dead trees living trees dead trees living trees dead trees Traditional parameters number of valid data 25...

Ngày tải lên: 07/08/2014, 03:22

... hazard of floods in piedmont and lowland regions, intercepts consider- able amounts of rainfall water penetrating through crowns of stands and releases the water into underly- ing soil layers to increase ... Distribution of pH H 2 O in layers of forest floor and organomineral horizon in different experimental stands Fig. 3. Distribution of pH KCl in layers of fo...

Ngày tải lên: 07/08/2014, 03:22

... layer 1m 2 4m 2 1m 2 4m 2 Tree- dominated Shrub- dominated Tree- dominated Shrub- dominated Tree- dominated Shrub- dominated Tree- dominated Shrub- dominated Height vs. VisSky GndCover ISF DSF LAI eff Number of sunflecks Sunfleck ... zones of the plot (tree- and shrub-dominated zones) are indicated on the map. Distances shown in the axes are in m. ing the two zones. Basal area w...

Ngày tải lên: 07/08/2014, 16:20

... crystal-bearing trees (II and IV) and for other positions. As only mature stemwood has been investigated, it remains to be investigated if the nature and origin of mineral inclusions in bark, roots and ... formation of mineral inclusions is induced or increases when the main functions of the woody tissues shift from transport and storage of water, minerals and assimilate...

Ngày tải lên: 07/08/2014, 16:20

... resistance of expanding current-year needles of the Canary Island pine and subalpine evergreen timberline conifers of continental Europe suggest that frost hardening during sprouting and cell elongation ... formation and E2, released during intracellular freez- ing, were recorded on 1 year old needles of potted seedlings of P. c a - nariensis during controlled freezing treat...

Ngày tải lên: 07/08/2014, 16:20

... ageing of cork oak stands, loss of cork quality [41], intense pruning [8] and increased cork oak decline (“seca”) [27]. Cork oak stands in Spain can be differentiated into open cork oak woodlands ... dominant trees [22]. Height growth of dom- inant trees is used mainly to define the site index in even-aged stands and is one of the basic equations or submodels in growth and...

Ngày tải lên: 08/08/2014, 00:22

... overestimated and might in fact be rather low. This effect is linked to a far larger decrease of the standing volume of trees (and thus carbon) in the forests and of soil carbon because of the harvesting, ... emissions of around 18% of the total effect of an increased use of wood in Switzerland. If one considers the effect of an increased use of wood in the mi...

Ngày tải lên: 08/08/2014, 00:22

... were sam- pled in the vicinity of these plots, during autumn 1999. During 2000, seeds germinated and young seedlings grew in 400-cm 3 pots contain- ing a mixture of peat and pine bark, under ... regression) and southern France (mean, standard deviation and confidence interval of the mean), and for the saplings of natural regeneration (plots and linear regression) at...

Ngày tải lên: 08/08/2014, 00:22

... with a maximum in autumn and a minimum in winter (between January and March). Winter temperatures often fall below 0 °C and in the coldest month (January) the mean of the daily minima is, on average, ... as of root and shoot hydraulic resistance in three field- growing species co-occurring in the same habitat i.e. Cotinus coggygria L. (Wig tree) , Prunus mahaleb L. (M...

Ngày tải lên: 08/08/2014, 01:21