Gas movement is studied in the soil showing that the diffusion process is the main one commanding the process. Diffusion is described by Fick’s law, using the partial gas pressure component as responsible for the gradient. Some examples of solution of boundary value problems (BVP) are presented to illustrate the processes responsible for soil aeration. Gas mass flow is less important and is, therefore, presented only shortly at the end of the chapter.
- Jury WA, Horton R (2004) Soil physics, 6th edn. John Wiley & Sons, Hoboken, NJGoogle Scholar
- Prevedello CL, Armindo RA (2015) Física do Solo com problemas resolvidos, 2nd edn. Prevedello CL, CuritibaGoogle Scholar
- Victoria RL, Libardi PL, Reichardt K (1976) Composição do ar num perfil de solo. Centro de Energia Nuclear para Agricultura. Universidade de São Paulo, PiracicabaGoogle Scholar