Báo cáo lâm nghiệp: "Modelling branchiness of Corsican pine (Pinus with mixed-effect models nigra Arnold ssp laricio (Poiret) Francis" pps

... over the trees. Original article Modelling branchiness of Corsican pine with mixed-effect models (Pinus nigra Arnold ssp. laricio (Poiret) Maire) Céline Meredieu Francis Colin b Jean-Christophe ... Corsican pine. 2. MATERIALS AND METHODS 2.1. Structural development of Corsican pine This study concerns Corsican pine (Pinus nigra A...

Ngày tải lên: 09/08/2014, 04:20

... Scots pine (Pinus sylvestris), Tree Physiol. 20 (2000) 145–157. [19] Kocon J., Occurrence and structure of the reaction wood of the European larch (Larix europaea DC) and of Scots pine (Pinus sylvestris ... composition of plant carbon correlates with water-use efficiency of wheat genotypes, Aust. J. Plant Physiol. 11 (1984) 539–552. [12] Fischer C., Höll W., Food reser...

Ngày tải lên: 08/08/2014, 01:21

... been a road along the axis of the plot with compacted soil. However, the assessment of bulk density of soil did not con- fi rm this assumption.  ere are patches of high and low soil density, ... properties may vary because of the presence of former roads, spatially variable use of fertilizers and irrigation within the plot etc. All these factors lead to the formation of...

Ngày tải lên: 07/08/2014, 10:21

... beginning of the measurements in 1996. Low values of ground area are characteristic of young, frequently thinned plots. Var- iations of stand and climate characteristics during the six years of measurements ... 8%). The pH of the top soil (0–30 cm) is 4.9 with a C/N of 12.2 and an apparent density of 0.85 kg dm –3 . Water holding capacity was about 0.40 m 3 m –3 . Mineral so...

Ngày tải lên: 08/08/2014, 01:22

... between maximum rates of transpiration (E max ) and absorption is greatly affected by the relative magnitude of root resis- tance. The minimum value of leaves occurs leaves about ... estimation of the total re- sistance of the transpirational pathway (Fig. 3). It is possible to determine the 3 parameters (2 resistances and 1 capacitance) of...

Ngày tải lên: 09/08/2014, 04:20

... l i and w i of Equation (1) is given in Figure 3. In general, an increase of h i results in an increase of the height of the red heart in the tree; an increase of l i results in an increase of the ... assessed at the ends of logs as the diameter of the circumcircle of the red heart related to the diameter of the cross-section [3]. However, it seems that the extent and tota...

Ngày tải lên: 07/08/2014, 16:20

... obtained from the summation of all days of the month. The test made for 17 weather stations for March showed an average difference with measured value of 19.92 MJ/m 2 with the one-day calculation ... the scale of France, the comparison with another origin of cloudiness (CRU data, [39]) shows locally important differences. For example, we have about 1.20 oktas of variation for...

Ngày tải lên: 07/08/2014, 16:21

... considerations: goodness -of- fit, predictive ability, biological sense and compliance with the assumptions of homoscedasticity, lack of autocorrelation and normality of residuals. The goodness -of- fit of the functions ... in site index models for even-aged stands of stone pine (Pinus pinea L.) in Spain, Ann. For. Sci. 60 (2003) 259–269. [6] Calama R., Montero G., Interre...

Ngày tải lên: 08/08/2014, 00:22

... estimation of these factors for Sweden. Tier 3 methods as defined by Penman et al. [14] include process based models of forest growth. Such mathematical models of growth capture our understanding of ... acceleration of forest growth: weather conditions, atmospheric concentration Figure 8. Variation of mean country Net Ecosystem Productivity with latitude of centre of cou...

Ngày tải lên: 08/08/2014, 00:22

... interventions in five compartments with ade- quate admixture of beech, (with variations of between 19–85%), and with a 1ow standing volume (average 185m 3 /ha with a variation of 124–258 m 3 /ha). The ... difference in terms of the decrease in diameter increment with GCUM of the different diameter- classes in the case of equilibrium situations. Each point repre- sents the...

Ngày tải lên: 08/08/2014, 00:22