Modelling of the topsoil organic carbon content by analysing the potential of spectroscopic techniques for digital soil mapping

  1. Rial Tubío, Marcela
Dirixida por:
  1. Antonio Martínez Cortizas Director
  2. Luis Rodríguez Lado Co-director

Universidade de defensa: Universidade de Santiago de Compostela

Fecha de defensa: 17 de outubro de 2017

  1. Raimundo Jiménez Ballesta Presidente/a
  2. Teresa María Taboada Rodríguez Secretaria
  3. Marcos Lado Vogal
  1. Departamento de Edafoloxía e Química Agrícola

Tipo: Tese


Soil organic carbon represents the largest terrestrial carbon pool, being one of the most relevant components in the carbon cycle budget and climate change feedbacks. The scientific community and policymakers expressed the need for spatially information about its distribution. This work aims to develop statistical methods to quantify topsoil organic carbon by using spectroscopic data as a tool for digital soil mapping. Firstly, it was explored the capacity of spectroscopy for map soil organic carbon content at regional scale using topsoil samples from Galicia (NW-Spain). Next, it was developed a spatially non-stationary approach that allows mapping soil organic carbon content and also identifying the factors more relevant for its accumulation in Europe. Finally, it was evaluated the capacity of digital soil mapping methods for monitoring the soil organic carbon stocks expected under different climate change scenarios using for such purpose legacy data from Santa Cruz Island (Galapagos).