Impact of Soil Water Flux on Vadose Zone Solute Transport ParametersEnglish Full Text
CHEN XIAOMIN, M. VANCLOOSTER and PAN GENXING (College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095 China, Department of Environmental Sciences and Land Use Planning, University Catholique de Louvain,B-1348 Lou
Abstract: The transport processes of solutes in two soil columns filled with undisturbed soil material collected from an unsaturated sandy aquifer formation in Belgium subjected to a variable upper boundary condition were identified from breakthrough curves measured by means of time domain reflectometry （TDR）. Solute breakthrough was measured with 3 TDR probes inserted into each soil column at three different depths at a 10 minutes time interval. In addition, soil water content and pressure head were measured at 3 different depths. Analytical solute transport models were used to estimate the solute dispersion coefficient and average pore-water velocity from the observed breakthrough curves. The results showed that the analytical solutions were suitable in fitting the observed solute transport. The dispersion coefficient was found to be a function of the soil depth and average pore-water velocity, imposed by the soil water flux. The mobile moisture content on the other hand was not correlated with the average pore-water velocity and the dispersion coefficient.
Keywords：
dispersion coefficient; pore-water velocity; solute transport; time domain reflectometry （TDR）;
- Series：
(D) Agriculture
- Subject：
Fundamental Science of Agriculture; Agronomy
- Classification Code：
S152
- Mobile Reading
Read on your phone instantly
Step 1Scan QR Codes
"Mobile CNKI-CNKI Express" App
Step 2Open“CNKI Express”
and click the scan icon in the upper left corner of the homepage.
Step 3
Scan QR Codes
Read this article on your phone.
- CAJ Download
- PDF Download
Download the mobile appuse the app to scan this coderead the article.
Tips: Please download CAJViewer to view CAJ format full text.
Download: 35 Page: 323-332 Pagecount: 10 Size: 354k
Citation Network
Related Literature
- Similar Article
- Reader Recommendation
- Associated Author