Spatial variability of bulk density and soil water in a small catchment of the Loess Plateau; 黄土高原小流域土壤容重及水分空间变异特征3) soil-water movement 土壤水分运动 1. In order to acquire more accuracy of numerical simulation of soil water movement under subsurface irrigation with porous ...
The regressors are hydraulic conductivity, percent slope squared, bulk density times percent rock fragments, electrical conductivity times percent rock fragments, and electrical conductivity times percent organic matter. The regressors predict soil suitability for a general crop model. The crops included in...
factor for the Middle East soils. As shown inTable 2, CaCO3had a significant coefficient and appeared in the second PTFs by Vaezi et al.,15which indicates the important effects of soil carbonates on theK-factor. However, in the present study, no significant relationship was found betweenK...
Plots such as those of Fig. 5.10 cannot be used for delineating adsorption mechanisms at soil surfaces. Sign in to download full-size image FIGURE 5.10. Use of the Freundlich equation to describe zinc adsorption (x)/desorption (0) on soils. Part 1 refers to the linear portion of the ...
Saturated conductivity is estimated from particle size data using a modified Kozeny-Carman equation which was developed from the data set of 250 soil ... S Mishra,JC Parker,N Singhal - 《Journal of Hydrology》 被引量: 203发表: 1989年 Use of soil texture, bulk density, and slope of the ...
It depends entirely on the shape that you are trying to find the surface area of. For a cube, simply add up the areas of each side: http://study.com/academy/lesson/how-to-find-the-surface-area-of-a-cube.html For a cylinder there is a different formula altogether: http://study.com...
The bulk modulus of a natural sample of cubic majorite, one of the primary components of the Earth's transition zone, has been determined by two independent methods: quasi-hydrostatic compression in the diamond anvil cell and Brillouin spectroscopy at room pressure. The two measurements agree well...
for perfectly saturated clays is expressed as w = 100eρw/ρs, and G<SUB>s</SUB>=ρs/ρw, where ρ<SUB>w</SUB>, ρ<SUB>s</SUB> and G<SUB>s</SUB> are density of water, density of soil particle and specific gravity of soil particle, respectively, C<SUB>c</SUB>'-(w<SUB...
Xiang Wu acknowledges the financial support from the National Science Foundation of China (No. 41827802). We would like to thank Sergey Tkachev for gas loading the diamond anvil cells and Xi Zhu for help in data analysis. This work was performed at GeoSoilEnviroCARS, Advanced Photon Source (...
of runoff volume and peak runoff rate, which, with the subbasin area, are used to calculate the runoff erosive energy. The crop management factor is recalculated every day that runoff occurs. It is a function ofaboveground biomass, residue on the soil surface, and the minimumCfactor for ...