scholarly journals Correction: Pimont, F. et al. Estimating Leaf Bulk Density Distribution in a Tree Canopy Using Terrestrial LiDAR and a Straightforward Calibration Procedure. Remote Sens. 2015, 7(6), 7995-8018

2016 ◽  
Vol 8 (1) ◽  
pp. 64
Author(s):  
François Pimont ◽  
Jean-Luc Dupuy ◽  
Eric Rigolot ◽  
Vincent Prat ◽  
Alexandre Piboule
Keyword(s):  
Density Distribution ◽  
Bulk Density ◽  
Calibration Procedure ◽  
Tree Canopy ◽  
Terrestrial Lidar

scholarly journals Estimating Leaf Bulk Density Distribution in a Tree Canopy Using Terrestrial LiDAR and a Straightforward Calibration Procedure

2015 ◽  
Vol 7 (6) ◽  
pp. 7995-8018 ◽  
Author(s):  
François Pimont ◽  
Jean-Luc Dupuy ◽  
Eric Rigolot ◽  
Vincent Prat ◽  
Alexandre Piboule
Keyword(s):  
Density Distribution ◽  
Bulk Density ◽  
Calibration Procedure ◽  
Tree Canopy ◽  
Terrestrial Lidar

Soil carbon and bulk density distribution within 10 Southern Piedmont grazing systems

2019 ◽  
Vol 74 (4) ◽  
pp. 323-333 ◽  
Author(s):  
T. Hendricks ◽  
D. Franklin ◽  
S. Dahal ◽  
D. Hancock ◽  
L. Stewart ◽  
...  
Keyword(s):  
Density Distribution ◽  
Soil Carbon ◽  
Bulk Density ◽  
Grazing Systems

scholarly journals A two-population sporadic meteoroid bulk density distribution and its implications for environment models

2017 ◽  
Vol 472 (4) ◽  
pp. 3833-3841 ◽  
Author(s):  
Althea V. Moorhead ◽  
Rhiannon C. Blaauw ◽  
Danielle E. Moser ◽  
Margaret D. Campbell-Brown ◽  
Peter G. Brown ◽  
...  
Keyword(s):  
Density Distribution ◽  
Bulk Density

Wood Density Determination by X- and Gamma-Ray Tomography

Holzforschung ◽  
2002 ◽  
Vol 56 (5) ◽  
pp. 535-540 ◽  
Author(s):  
A. Macedo ◽  
C. M. P. Vaz ◽  
J. C. D. Pereira ◽  
J. M. Naime ◽  
P. E. Cruvinel ◽  
...  
Keyword(s):  
Bulk Density ◽  
Wood Density ◽  
Wood Species ◽  
Gamma Ray ◽  
Wood Quality ◽  
Density Measurement ◽  
Calibration Procedure ◽  
Density Determination ◽  
Resolution Level

Summary Wood density measurement is related to several factors that influence wood quality. In this paper, a CT image calibration procedure which allows image quantification in terms of dry bulk density is presented for three different X- and gamma-ray energies (28.3, and 59.5, and 662.0 keV). The mass attenuation coefficients measured for a set of eight wood species did not vary significantly, allowing a single calibration for determination of bulk density of air-dried wood samples at each energy. The equation for bulk density calibration obtained was validated using a second set of twelve wood species. Comparison of bulk density determined by CT images, using the calibration procedure proposed, with values obtained by gravimetric methods, presented a very good linear correlation coefficient (R2=0.94). The main advantage of CT imaging over conventional techniques for wood bulk density determination is that it allows detection and quantification of heterogeneities and internal defects. At the sub-millimetric spatial resolution level, it is possible to identify morphological and structural aspects of wood samples.

scholarly journals Mass Distribution and Bulk Density Distribution of Interplanetary Dust

1991 ◽  
Vol 126 ◽  
pp. 331-334
Author(s):  
A. Hajduk
Keyword(s):  
Density Distribution ◽  
Bulk Density ◽  
Mass Distribution ◽  
Mass Range ◽  
Interplanetary Dust ◽  
Mass Scale ◽  
Evolutionary Stage ◽  
Source And Sink

AbstractMass distribution of the interplanetary dust is reexamined taking into account bulk density distribution of the dust and larger particles. It can be shown that the mass index of particles depends on the evolutionary stage of the population and changes along the mass scale. The flattening of the mass distribution at the higher mass range may explain the problem of the equilibrium between the source and sink of the interplanetary dust.

scholarly journals Soil bulk density and biomass partitioning of Brachiaria decumbens in a silvopastoral system

2010 ◽  
Vol 67 (5) ◽  
pp. 598-603 ◽  
Author(s):  
Domingos Sávio Campos Paciullo ◽  
Carlos Renato Tavares de Castro ◽  
Carlos Augusto de Miranda Gomide ◽  
Priscila Beligoli Fernandes ◽  
Wadson Sebastião Duarte da Rocha ◽  
...  
Keyword(s):  
Bulk Density ◽  
Rainy Season ◽  
Block Design ◽  
Eucalyptus Grandis ◽  
Acacia Mangium ◽  
Soil Bulk Density ◽  
Tree Canopy ◽  
Brachiaria Decumbens ◽  
Allocation Pattern ◽  
Density And Biomass

Shade in silvopastoral systems improves the thermal comfort of animals, but it may also affect the pasture productivity and can contribute to soil compaction in the shaded areas due to the increase in the number of animals looking for comfort. The effect of grazing at various distances from tree rows (under the tree canopy, at 6 and at 12 m away from the trees) on the soil bulk density and on the aerial and root biomass of Brachiaria decumbens was evaluated in both the dry and the rainy seasons. The study was carried out on an Orthic Ferralsol in a randomized block design with two replications. Tree rows were composed of Eucalyptus grandis and Acacia mangium species, and the paddocks were submitted to a rotational stocking management, using Holstein (Bos taurus) × Zebu (Bos indicus) heifers. The shade intensity in the pasture decreased with an increasing distance from the tree row. Soil bulk density did not vary with the distance from the tree row, but varied seasonally, being greater in the rainy season (1.47 g cm-3) than in the dry season (1.28 g cm-3). Green forage and root mass, expressed as dry matter, were lower under the tree canopy and were greater in the rainy season. There were decreases of 22.3 and 41.4% in the aerial and root biomasses, respectively, in the tree rows. The greatest shoot/root ratio for B. decumbens under moderate and intensive shading indicates a modification in the forage biomass allocation pattern that favours the aerial development in detriment of the root system.

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