Báo cáo lâm nghiệp: "L’inventaire par évaluation visuelle de

Báo cáo lâm nghiệp: "L’inventaire par évaluation visuelle de grosseurs d’arbres, une alternative pertinente aux inventaires forestiers complets" pps

... 10.1051/forest:2005029 Article original L’inventaire par évaluation visuelle de grosseurs d’arbres, une alternative pertinente aux inventaires forestiers complets Philippe LEJEUNE*, Jacques HÉBERT, Emmanuelle BOUSSON, ... car- actérisée par une simplification des modalités de prise de don- nées de manière à compenser l’effort de mesure supplémentaire imposé...

Ngày tải lên: 08/08/2014, 00:22

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Báo cáo lâm nghiệp:"Conséquences du vieillissement du bois de chêne sessile (Quercus petraea (Matt.) Liebl.) sur sa perception esthétique par les utilisateurs" docx

... déjà participé à la première enquête. Les deux enquêtes ont été effectuées par du personnel et des étudiants de la Faculté de Sciences de l’Université Henri Poincaré de Nancy et de l’INRA de Nancy-Champenoux. ... cycle de vieillissement UV artificiel de 500 h. Une cinquantaine de personnes a participé à chacune des deux enquêtes, basées sur la comparaison par paires d...

Ngày tải lên: 08/08/2014, 01:21

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Báo cáo lâm nghiệp: "Ecological conditions influencing the localization of egg-laying by females of the cockchafer (Melolontha hippocastani F.)" pps

... and the depth depends on the Fig. 3. Comparison of losses in terms of soil preparation (N – ploughing, C – whole-area preparation, V – improvement) (H is the test criterion) P = 0.001 Code Number ... of the forested area. Full-area preparation consisted of pulling out the stumps, part of which were placed into a prepared hole and covered with earth and part was heaped into a mound across...

Ngày tải lên: 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed" pps

... years under various natural conditions. Šach reported Horton’s model (H 1933) constructed in the 1930’s as the design used for a long time to determine runoff from watersheds under forested-site ... rapid flow. e time series of the investigation were divided into particular periods in order to calculate the mean unit hydrograph comparison using double-mass curves of both runoff and...

Ngày tải lên: 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Horizontal structure of forest stands on permanent research plots in the Krkonoše Mts. and its development" ppsx

... plots is described for juvenile growth and developmental phases (natural seeding, advance growth, plantations) and tree layer of a parent stand. Hopkins-Skellam index, Pielou- Mountford index, Clark-Evans ... disintegration is random to moderately regular. In general, young- er forest generations with spontaneous development show a tendency of clustering while older generations of trees...

Ngày tải lên: 07/08/2014, 10:21

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Báo cáo lâm nghiệp: " An estimation of willingness to pay for asparagus (Asparagus racemosus Willd.) collectors in Makawanpur District, Nepal" ppsx

... livelihood of asparagus dependents by the sustainable management of the Department’s and the National Park’s forests and giving legal permissions to collect asparagus from the National Park, which ... Asparagus contributes a signiﬁ- cant amount of income for these collectors and is an inseparable part of their livelihood. e amount of asparagus in both the Department’s and the National Pa...

Ngày tải lên: 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Composition, distribution and supposed origin of mineral inclusions in sessile oak wood – consequences for microdensitometrical analysis" ppsx

... Établissement des courbes de variation de la den- sité du bois par exploration densitométrique de radiographies d’échantillons prélevés à la tarière sur des arbres vivants. II. Utilisation des spectres de ... parenchymateuses des rayons ligneux multisériés et du parenchyme axial. Des cristaux d’oxalate de calcium, des grains de silice et des granules amorphes ayant des compositi...

Ngày tải lên: 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Field trials of potential attractants and inhibitors for pine shoot beetles in the Yunnan province, China" pps

... and field assistance. Gratitude is also extended to Steve Burke of the Phero Tech Inc. for supplying the experimental materials and participation in the experimental design. This paper ben- efited ... funded by the Knowledge Innovation Program of the Chinese Academy of Sciences (KSCX1-SW-13, KSCX3-IOZ-04) and the State Key Laboratory of Integrated Management for Agricultural Insects and Roden...

Ngày tải lên: 08/08/2014, 00:21

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Báo cáo lâm nghiệp: "Modeling lumber recovery in relation to selected tree characteristics in jack pine using sawing simulator Optitek" ppsx

... validate the models developed from the simulated sawing results. 3. MODEL DEVELOPMENT To develop empirical models, it is necessary to select proper variables and model forms and to use good parameter ... produits sont des considérations importantes dans la prise de décision en aménagement forestier. Cette étude vise à développer des modèles généraux de rendement en volume au niveau de l...

Ngày tải lên: 08/08/2014, 00:21

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Báo cáo lâm nghiệp:"A height-diameter model for Pinus radiata D. Don in Galicia (Northwest Spain)" docx

... données correspondent à deux inventaires réalisés sur 182 parcelles permanentes de Pinus radiata D. Don réparties dans toute la Galice, au nord-ouest de l'Espagne. La comparaison des modèles ... Instituto Interamericano de Cooperaciún para la Agricultura (IICA), Costa Rica, 1997. [35] Sỏnchez F., Rodrớguez R., Rojo A., lvarez J., Resultados preliminares del estudio de curvas d...

Ngày tải lên: 08/08/2014, 01:21

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