Báo cáo lâm nghiệp: "A comparison of two modelling studies of environmental effects on forest carbon stocks across Europe" ppsx

... 2005 DOI: 10.1051 /forest: 2005082 Original article A comparison of two modelling studies of environmental effects on forest carbon stocks across Europe Ronnie MILNE*, Marcel VAN OIJEN Centre for Ecology ... deposition in EFM that Figure 11. Simulation results from the Edinburgh Forest Model: Carbon stocks at 22 sites. Effects of changes in [CO 2 ], climate...

Ngày tải lên: 08/08/2014, 00:22

... in Foresters’ future: leaders or followers? Proceedings of the Society of American Foresters National Convention 1985, Society of Ame- rican Foresters, Washington, DC, 1985, pp. 228–232. [12] Kalbfleisch ... 2004 DOI: 10.1051 /forest: 2004064 Original article A comparison of fitting techniques for ponderosa pine height-age models in British Columbia Gordon NIGH* Research Branch, BC...

Ngày tải lên: 08/08/2014, 01:22

... Unioninkatu 44, SF-00 170 Helsinki, Finland Introduction The directional distribution of radiation incident on a coniferous shoot has been shown to have a large effect on ... A comparison of the photosynthetic radiation response of Scots pine shoots in direct and diffuse radiation P. Oker-Blom 1 H. Smolander 2 T. Lahti 3 ! University of Helsinki,...

Ngày tải lên: 09/08/2014, 04:20

... (0.09), this relationship accounted for only 23 p. 100 of the variation between the two combinations of variables. In all biochemical analyses, SPEED was the strongest dependent ... preserves the physiological effects of stratification but also enhances them. 4. Discussion and Conclusions Stratification reduced the germinative percentage of in...

Ngày tải lên: 09/08/2014, 06:21

... gradient of one indicates that there were similar concentra- tions in each of the staves from the same tree. The lower variation among samples from the Tronçais forest than ... between the two forests in the estimated soluble ellagitannins of new heartwood. Measurement of insoluble tannins in two samples Table VI gives the mean concentration...

Ngày tải lên: 08/08/2014, 18:21

... effects of browsing were evident: the results of browsing on plants of the two species support our first hypothesis of a preferen- tial browsing on the deciduous oak in comparison to the ev- ergreen one. ... browsing treatment was only lightly significant for total height. 3.2. Response of the two species to different intensities and seasons of simulated browsing None of t...

Ngày tải lên: 08/08/2014, 00:22

... solutions of equations (3) to (5). The differential equation (3) implies that the relative rate of change in the number of stems is proportional to a power function of age. Inte- gration of equation ... transition functions to define the rate of change of the system depending on the current state of the stand; and finally some control functions to regulate the modifications...

Ngày tải lên: 08/08/2014, 01:21

... stratum. ere were two lines of traps led in a trees cropping mast oak forest, one line in a young oak stand, one in a spruce forest, one in a pine forest and one at a forest edge. As to sample ... selected for the study, the one intensive and the other extensive, both of them with similar environmental conditions. Supported by the Ministry of Education, Youth and Sports...

Ngày tải lên: 07/08/2014, 03:22

... 01 Deflection (mm) Version I Multiplex 15 mm Force (N) Fig. 6. Comparison of the course of force and deflection – bending strength across the grain – Vari- ant 1 Fig. 7. Comparison of the course of ... 11.44 12,000 10,000 8,000 6,000 4,000 2,000 0 Modulus of elasticity – MOE (N/mm 2 ) Version I Version II Version III Multiplex Multiplex 20 mm 15 mm Fig. 11. Comparison of...

Ngày tải lên: 07/08/2014, 04:20

... 6. Comparison of final points of abrasion in samples with and without glass fibres Fig. 5. Comparison of initial points of abrasion in samples with and without glass fibres Table 6. Values of ... distributed on the paper J. FOR. SCI., 54, 2008 (1): 31–39 37 Table 5 presents a comparison of the values of abrasion resistance in WISA plywoods. Table 6 presents a compariso...

Ngày tải lên: 07/08/2014, 10:21