Pregled bibliografske jedinice broj: 1037041
Quantification of Local Scale Preferential Flow and Nonlinear Solute Transport Processes in Highly Structured Soils
Quantification of Local Scale Preferential Flow and Nonlinear Solute Transport Processes in Highly Structured Soils // Embracing the digital Environment / Wendroth, Ole ; (ur.).
San Antonio (TX): ASA-CSSA-SSSA, 2019. (poster, nije recenziran, sažetak, znanstveni)
CROSBI ID: 1037041 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Quantification of Local Scale Preferential Flow and Nonlinear Solute Transport Processes in Highly Structured Soils
Autori
Filipović, Vilim ; Gerke, H., Horst ;
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Embracing the digital Environment
/ Wendroth, Ole ; - San Antonio (TX) : ASA-CSSA-SSSA, 2019
Skup
"Embracing the Digital Environment” 2019 ASA-CSSA-SSSA International Annual Meeting
Mjesto i datum
San Antonio (TX), Sjedinjene Američke Države, 11.11.2019. - 13.11.2019
Vrsta sudjelovanja
Poster
Vrsta recenzije
Nije recenziran
Ključne riječi
Preferential flow, transport modeling, mass transport, soil heterogeneity
Sažetak
Water and solute fluxes depend on soil hydraulic properties which are subjected to horizon-specific pedological changes across space and time. Terrain inclination and soil structural development shape the hydraulic properties of soil horizons and thus, distribution of water and solute fluxes. Soil structural development and hydraulic properties are dynamically changing within the soil landscape, even more rapidly in cultivated arable soils. In order to develop pedotransfer functions for the estimation of hydraulic properties from basic soil properties, needed for deterministic descriptions of soil water fluxes and solute dynamics, soil structural and hydraulic properties are required for all soil horizons, including subsurface structures in a 3D soil landscape continuum. Here we provide some of the examples of nonlinear processes quantification with the support of numerical modeling tools. Simulations reveal that identifying and parameterizing the most critical structures is the key for correct quantification of vadose zone processes. Subscale structures that may account for local non-equilibrium conditions and preferential flow could be included by appropriate upscaling of the smaller-scale heterogeneities in the macroscopic scale model approaches. These local-scale processes might have large importance for solute movement in agricultural fields where tillage and trafficking influence the topsoil structure. Challenges remains in correct quantification of local-scale processes and their prediction with vadose zone models.
Izvorni jezik
Engleski
Znanstvena područja
Poljoprivreda (agronomija)
