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This paper presents the study of the relationship between electrical properties and physical characteristics of the soil. Measures of apparent electrical resistivity of the soil were made for different types of soil, varying moisture content gradually while maintaining a constant compaction, and then varying the compaction and relating it to a constant humidity. Development of a correlation surface...
The study aimed at the impacts of the different topographic positions on the soil physical and chemical characteristics in karst pinnacle. Soil pH, temperature, electric conductivity, moisture content and CO2 content were measured along two slopes and their mid-depression in Hui Xian Pinnacle. Based on the analysis of the data, the results showed no significant difference of soil pH and soil temperature,...
The interaction among soil organic carbon (SOC), pH and soil electrical conductivity (EC) are highly related to land use and spatial distribution in the Kao-Ping River basin. Soil organic matters provide soil elements and nutrients. PH of soil determines the plant variety and land use. The level of soil salinity can be used to be the indicator of the selection of plant species. In general, when the...
Preferential flow plays an important role in the movement of soil water. Dye tracer experiments and computer image analysis were used to analyze morphological and distribution of preferential flow paths under different land uses (forest land, shrubs land, and farmland). The relationships between the preferential flow paths and root lengths, root holes and root surface area were analyzed by Pearson...
Haloxylon ammodendron is constructive species, which had degeneration in large areas in the western part of Gurbantonggut Desert, the second largest desert of China. Therefore, we investigated the spatial distribution of dead plants, the age structure of both live and dead plants in the population, the depth of groundwater and soil quality. The results showed that: (1) the dead plants of H. ammodendron...
Diffusion coefficients at the sediment-water interface are essential for prediction of flux rates across the interface. For calculating bulk sediments diffusion coefficients from free solution diffusion coefficients, Formation factor, F, can be estimated from Phi, porosity of sediments. To determine formation factor, resistivity of pore water and sandy sediments with different diameter, originated...
The paper studies the drought resistance and performance of five ground covers (Sedumlineare, Sedumlineare dasiaPu Fupsila, Sedumelatinoides, Zephyranthescandida, Ophiopogonjaponicus) under drought-stress through the testing of artificial climatic cabinet. We choose soil moisture content, relative water content of leaves, relative electric conductivity, chlorophyll, SOD, malondialdehyde (MDA),...
There have been virtually no reports on the origin of environmental magnetic fields which act as noise sources in biomagnetic measurements, despite its importance to the design of magnetic shielded rooms and to the quality of signals obtained in biomagnetics experiments. In this paper, the measured variation of environmental magnetic fields at three locations-- Tokyo Denki University, Hokkaido University,...
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