A plateau scale soil moisture and soil temperature observatory is established on the Tibetan Plateau for quantifying uncertainties in coarse resolution satellite and model products of soil moisture and soil temperature. The Tibetan Plateau observatory of plateau scale soil moisture and soil temperature (Tibet-Obs) consists of three regional scale insitu reference networks, including the Naqu ne...

Exact estimates of soil clay (<2 μm) and silt (2-20 μm) contents are crucial as these size fractions impact key soil functions, and as pedotransfer concepts based on clay and silt contents are becoming increasingly abundant. We examined the effect of removing soil organic matter (SOM) by H2O2 before soil dispersion and determination of clay and silt. Soil samples with gradients in SOM were retr...

Najafi-Ghiri M., Abtahi A. (2013): Potassium fixation in soil size fractions of arid soils. Soil & Water Res., 8: 49–55. Amounts of potassium (K) fixed in soil fractions of 10 calcareous soils of southern Iran were measured to evaluate the contributions of different soil size fractions to K fixation. Soil particles were fractionated after dispersion of the soils with an ultrasonic probe. Potass...

Reverse subdivision aims at constructing a coarser representation of an object given by a fine polygon mesh. In this paper, we first derive a mask for reverse Loop subdivision that can be applied to both regular and extraordinary vertices. The mask is parameterized, and thus can also be used in reversing variants of Loop subdivision, such as those proposed by Warren and Litke. We apply this mas...

We present a method for the reconstruction of a 3D real object from a sequence of high-definition images. We combine two different procedures: a shape from silhouette technique which provides a coarse 3D initial model followed by a multi-stereo carving technique. We propose a fast but accurate method for the estimation of the carving depth at each vertex of the 3D mesh. The quality of the final...

We propose an efficient alignment method for textured DooSabin subdivision surface templates. A variation of the inverse compositional image alignment is derived by introducing smooth adjustments in the parametric space of the surface and relating them to the control point increments. The convergence properties of the proposed method are improved by a coarse-to-fine multiscale matching. The met...

Herbicide carryover injury to rotational crops can vary in severity depending on the influence of soil properties herbicide bioavailability. Greenhouse bioassays were conducted with soybean, radish, and canola evaluate differences bioavailability three herbicides risk, atrazine, mesosulfuron-methyl, topramezone. Bioassays varying regional types nine treatment rates including a control. Plant vi...

The interlayer soil identified in conventional French rail track corresponds to a mixture of fine and coarse grains. To investigate the role fines soil-water retention property such mixture, different grain contents f v dry densities ρ d–f were considered. filter paper method was applied measure matric suction. Mercury intrusion porosimetry tests performed observe microstructure soil. In terms ...

Due to their spatial complexity and dynamic nature, floodplains provide a wide range of ecosystem functions. However, because of flow regulation, many riverine floodplains have lost their characteristic heterogeneity. Restoration of floodplain habitats and the rehabilitation of key ecosystem functions, many of them linked to organic carbon (C) dynamics in riparian soils, has therefore become a ...

Cattle production is a large source of greenhouse gas (GHG) emissions from the Canadian livestock sector. Efforts to reduce CH4 enteric fermentation have led modifications diet composition for livestock, resulting in corresponding change manure properties. We studied effect applying cattle fed barley-based with and without methane inhibitor supplement, 3-nitrooxypropanol (3-NOP), on soil GHG em...