Sökning: "pedotransfer functions"

Hittade 2 uppsatser innehållade orden pedotransfer functions.

1. 1. Quantifying relationships between X-ray imaged macropore structure and hydraulic conductivity

   Master-uppsats, SLU/Dept. of Soil and Environment

   Författare :Muhammad Arslan Ahmad; [2016]
   Nyckelord :critical pore diameter; modelling; pedotransfer functions; physics based approaches; SoilJ; 3-D visualization; soil characterization;

   Sammanfattning : Computer based simulation models which estimate hydraulic properties of soil usually make use of statistical approaches such as multiple regressions that relate hydraulic properties to widely measured soil properties like textural fractions, organic matter content and bulk density. The problem is that hydraulic properties are usually only weakly correlated to these properties, because it is more strongly dependent on the characteristics of larger pores in the soil. LÄS MER

3. 2. Benchmarking a random forest for predicting preferential flow in soils

   Master-uppsats, SLU/Dept. of Soil and Environment

   Författare :Helena Jordà Guerra; [2013]
   Nyckelord :preferential flow; random forest; benchmarking; undisturbed soil; soil database;

   Sammanfattning : Preferential flow processes are important to fully understand flow and solute transport in the vadose zone and implement adequate management practices. Physical models are difficult to use at large scales to predict soil susceptibility to preferential flow. Instead, pedotransfer functions might be applied. LÄS MER