Báo cáo lâm nghiệp: "A decision support system to simulate and compare silvicultural scenarios for pure even-aged larch stands" doc

... response to society demands. In order to help forest managers make appropriate choices in silvicultural systems, we propose a SDSS (Silvicultural Decision Support System) that applies to pure and even-aged ... stands Ann. For. Sci. 64 (2007) 345–353 345 c  INRA, EDP Sciences, 2007 DOI: 10.1051/forest:2007011 Original article A decision support system to simulate...

Ngày tải lên: 07/08/2014, 16:21

... typically separated into over- and understorey and the understorey was measured less intensively than the overstorey. Understorey trees were excluded from this analysis. Stand basal area, G (m 2 ha −1 ), ... parameter to make local and which to make global depends on the modelling subject. The simplest formulation of Equations (6.1) and (6.2) emerges from leaving α 0 and β 0 to...

Ngày tải lên: 07/08/2014, 16:21

... calculated to be 0.9 for the dichotomous PPME scoring system. Based on data reported in three studies [29,39,40] the MCID was calculated to range from 1.15 to 2.15 for the 3 level PPME scoring system. Responsiveness No ... response option for patient independence with transfers from lying to sitting and sitting to lying. The HABAM provides a dichotomous response option f...

Ngày tải lên: 18/06/2014, 22:20

... classifica- tion and classifier fusion processes, respectively. SM and EK conducted data acquisition and interpretation. KPC and SGF helped to draft the manuscript. TC and KM worked on the charts and illustrations ... sec- tion, the classification scores and sensitivity-specificity measures for MS-COH and AR-COH, for Tasks 1 and 2 are shown in the form of bar graphs in...

Ngày tải lên: 19/06/2014, 08:20

... locality. e following groups of forest types were identified there: Ul- meto-Fraxinetum carpineum, Saliceto-Alnetum and Carpineto-Quercetum acerosum. As to the shrub and herb stratum, a great variety ... pine forest and one at a forest edge. As to sample the particular forests, trapping lines were led in all characteristic types of stands. e number of pheas- ants released ever...

Ngày tải lên: 07/08/2014, 03:22

... supports whereas the sin- gle loading interacts in the middle of sample (Figs. 4 and 5). During the test the width and thickness of the sample, and the distance of supports are measured, and ... from 13.02 kg/m 2 to 14.41 kg/m 2 . CONCLUSION e aim of the paper was to determine properties of newly developed plywood materials combined with cork and fibreglass and to com...

Ngày tải lên: 07/08/2014, 04:20

... from for- eign companies WISA (Finland) and FINNFOREST (Finland) serve for the purpose of comparison. Face veneers of these products are of birch except spruce boards Metsä-Form and Wisa-Form ... with the phenol-formaldehyde foil surface finish and to assess the surface resistance of a new combined plywood material of a given construction to abrasion. For sheathing, phenol-...

Ngày tải lên: 07/08/2014, 10:21

... higher (P < 0.05) in beech stands compared to spruce stands, especially in the forest floor (Tables 2 and 3). Chromium e highest contents of chromium in the forest floor are found in the northern ... H 2 SO 4 , Se and H 2 O 2 was used for determination of N, P, K, Ca, Mg, Na, followed by methods of detection: titrimetric method for N (Kjeltec, Tecator), spectrophotometry fo...

Ngày tải lên: 07/08/2014, 10:21

... quantification of diversity through mathematic for- mulas allows us to evaluate this problem objectively and to understand better the relations of a given for- est ecosystem. A remarkable part of their ... protection and hydrological ones in particular. A significant part of spruce stands in this forest veg- etation level preserves the character of the natural forest. Long-term m...

Ngày tải lên: 07/08/2014, 10:22

... framework for studying the integrated system of forest models. Acknowledgements e authors would like to thank the Inventory In- stitute of Beijing Forestry for its data and Dr. Q V. C for ... 2005DIB5JI42, and No. CAFYBB2008008. In forest management, forest growth and yield models play a very important role in studying for- est growth processes and predicting fo...

Ngày tải lên: 07/08/2014, 10:22