Three-Dimensional Visualization of Soil Electrical Conductivity Variation by VRML
High quality three-dimensional (3-D) earth data is very important for environmental assessment studies, precision agriculture and water quality simu-lation modeling. In the present study, the soil apparent electrical conductivity (ECa) inversed by the EM38 linear model from aboveground EM38 measure-ments were selected as the data source of 3-D spatial variability. Firstly, the sphere model which built by VRML approach was used to present the 3-D distributed ECa sites. Then, the plume model was built with the help of EVS, which presents soil volume of ECa greater than a certain value. The VRML models presented a superior visualization of spatial distribution of ECa in 3-D space that 2-D interpolation cant achieve. It was shown that the field in the east comer and low salinity level in the west and northern corner of the field has a high salinity level. The salinity increased with the increase of the soil depth at the vertical direction. At last, the vrml models were placed on a WWW server, which can be opened and accessed by anyone. Using WWW to transfer information to the public is considered as a very important and practical method.
Electrical Conductivity Three-dimensional Variation Three-dimensional Visualization VRML
Hongyi Li
School of Tourism and Urban Management, Jiangxi University of finance and economics,Nanchang, P.R. China 330013
国际会议
南昌
英文
212-221
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）