Báo cáo lâm nghiệp: "A fractal root model applied for estimating the root biomass and architecture in two tropical legume tree species" pps

... study of the synusiae of small terrestrial mammals of pheasantries in southern Moravia is therefore aimed at monitoring the effect of specific properties of these habitats (high diversity of biotopes, ... supplementary food in the form of feeding for pheasants. Moreover, in the region of southern Moravia, pheasantries represent isolated areas of woo...

Ngày tải lên: 07/08/2014, 03:22

... is again a theme of another research inclusive of determination of the elastic constant according to separate layers. Appropriate tests to determine parameters men- tioned above will be the ... density of plywoods significantly a ects the capacity of the material to dampen noise. To achieve good sound-proof properties materials of a density of 630 kg/m 3...

Ngày tải lên: 07/08/2014, 04:20

... three broad categories: whole-stand models, individual-tree models, and diameter-distribu- tion models (M 1974). Whole-stand models are models that use the stand as a modelling unit (C ... ABSTRACT: Stand growth and yield models include whole-stand models, individual-tree models and diameter-distri- bution models. In this study, the three models were linked by fore...

Ngày tải lên: 07/08/2014, 10:22

Ngày tải lên: 07/08/2014, 16:20

... Spain (Received 15 September 2006; accepted 20 December 2006) Abstract – A dynamic whole-stand growth model for radiata pine (Pinus radiata D. Don) stands in north-western Spain is presented. In ... inventory data are available [4]. A growth model for Pinus radiata D. Don stands in north-western Spain 455 Table I. Summarised data corresponding to the...

Ngày tải lên: 07/08/2014, 16:21

... 455 Ann. For. Sci. 62 (2005) 455465 â INRA, EDP Sciences, 2005 DOI: 10.1051/forest:2005042 Original article A stochastic height-diameter model for maritime pine ecoregions in Galicia (northwestern ... stochastic height-diameter model was developed for maritime pine (Pinus pinaster Ait.) in Galicia (northwestern Spain). Four well-known growth function...

Ngày tải lên: 08/08/2014, 00:22

... probability model for forest stands in Catalonia pre- sented in this study opens many possibilities to integrate the risk of fire into forest management planning and decision-making. The parameters included ... stand-level model for the probability of fire adequate for forest management planning in Catalonia. The model should use variables that are normall...

Ngày tải lên: 08/08/2014, 00:22

... 237 Ann. For. Sci. 60 (2003) 237245 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003015 Original article A height-diameter model for Pinus radiata D. Don in Galicia (Northwest Spain) Carlos ... The model of Tomé gave the best height estimates. Pinus radiata D. Don / forest modelling / Galicia / height-diameter relationship Résumé – Un modèle hauteur-dia...

Ngày tải lên: 08/08/2014, 01:21

... 327335 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2004026 Original article A flexible radial increment model for individual trees in pure even-aged stands Christine DELEUZE a *, Olivier PAIN a , ... various individual growth models for trees in pure and even-aged stands, a generic model with a form parameter according to each species is proposed. With a f...

Ngày tải lên: 08/08/2014, 01:21

... refer to the simu- lated root extension in two other trees and the small dots refer to other trees. Fractals for root biomass and architecture 339 in exposed root systems were similar for both ... extension in trees 6 and 10, the small dots refer to other trees and the rectangle is the 12 -tree sample plot. For G. sepium, the simulated root arc...

Ngày tải lên: 08/08/2014, 01:21

... EDP Sciences, 2004 DOI: 10.1051/forest:2004037 Original article A two-step mortality model for even-aged stands of Pinus radiata D. Don in Galicia (Northwestern Spain) Juan Gabriel ÁLVAREZ GONZÁLEZ a *, ... develop a two-step mor- tality model for even-aged stands of Pinus radiata including competition-induced mortality (regular mortality) and...

Ngày tải lên: 08/08/2014, 01:21

... 609 Ann. For. Sci. 61 (2004) 609615 â INRA, EDP Sciences, 2004 DOI: 10.1051/forest:2004064 Original article A comparison of fitting techniques for ponderosa pine height-age models in British ... as that for model (5). Therefore, I recommend the use of model (4) for estimating the height of ponderosa pine in British Columbia. The models cannot be algebr...

Ngày tải lên: 08/08/2014, 01:22

... part of a larger project aimed at modeling growth of pure even-aged stands of common beech, on the basis of a network of permanent plots observed since the turn of the ... generalization of Eichhorn’s rule The data analysis of the 3 previous sec- tions provides a model for the 3 compo- nents of productivity in even-aged beech...

Ngày tải lên: 08/08/2014, 18:21

... plugs of PDA only. At the end of the experiment isolations were made from all the plants to confirm the presence of the pathogens in the inoculated plants. Reisolations were ... decrease in stem diameter, which corresponds to the extension of the cankers and finally the death of the plants. The relations between the global...

Ngày tải lên: 08/08/2014, 18:21

... A model of light interception and carbon balance for a sweet chestnut coppice (Castanea sativa Mill.) L. Mordacq B. Saugier Laboratoire ... respiration and aerial growth in a sweet chestnut (Castanea sativa Mill.) coppice for several years after a cut. We designed a model to predict photosynthe- sis of heterogeneous ... phot...

Ngày tải lên: 09/08/2014, 04:20