Root system estimation based on satellite remote sensing : An applied study in Eastern Uganda

Pilesjö, PetterLund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Centrum för geografiska informationssystem (GIS-centrum),Institutionen för naturgeografi och ekosystemvetenskap,Centrum för Mellanösternstudier (CMES),Samhällsvetenskapliga institutioner och centrumbildningar,Samhällsvetenskapliga fakulteten,Centre for Environmental and Climate Science (CEC),Faculty of Science,Centre for Geographical Information Systems (GIS Centre),Dept of Physical Geography and Ecosystem Science,Centre for Advanced Middle Eastern Studies (CMES),Departments of Administrative, Economic and Social Sciences,Faculty of Social Sciences (author)

The density of roots is an important factor influencing the rate and magnitude of landslides. Due to the increased variability in climate, mainly rainfall, Eastern Uganda is severely struck by an increasing number of these mass movements, often with human casualties as one of the negative impacts. The aim of this study is to explore the possibility to estimate the depth and density of the root system influencing the resistance to landslides, from satellite remote sensing data. 104 samples were collected in field, where the root system was classified into 5 different classes, from non-existing to dense and deep (forest). The study was carried out in the Mount Elgon area located at the Ugandan-Kenyan border. The field data were then compared with 30 m Landsat TM data, in order to investigate possible links between reflectance (single bands as well as indices) and ground truth data. The results indicate that, following this methodology, it is not possible to estimate the root system density based on the remotely sensed data, since the maximum Cohen’s kappa value of 0.081 is judged deficient.

Ahlbäck, MalinLund University (author)
Ahlgren, MayaLund University (author)
Ekström, HannaLund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Statsvetenskapliga institutionen,Samhällsvetenskapliga institutioner och centrumbildningar,Samhällsvetenskapliga fakulteten,Centre for Environmental and Climate Science (CEC),Faculty of Science,Department of Political Science,Departments of Administrative, Economic and Social Sciences,Faculty of Social Sciences(Swepub:lu)ha0725ek (author)
Hansson, MalinLund University (author)
Mužić, IrisLund University (author)
Rosenström, NikeLund University (author)
Weichert, FranziskaLund University (author)
Mansourian, Ali (editor)
Pilesjö, Petter (editor)
Harrie, Lars (editor)
van Lammeren, Ron (editor)
BECC: Biodiversity and Ecosystem services in a Changing ClimateCentrum för miljö- och klimatvetenskap (CEC) (creator_code:org_t)

In:Geospatial Technologies for All : short papers, posters and poster abstracts of the 21th AGILE Conference on Geographic Information Science. Lund University 12-15 June 2018, Lund, Sweden - short papers, posters and poster abstracts of the 21th AGILE Conference on Geographic Information Science. Lund University 12-15 June 2018, Lund, Sweden

By the author/editor: Pilesjö, Petter; Ahlbäck, Malin; Ahlgren, Maya; Ekström, Hanna; Hansson, Malin; Mužić, Iris; show more...; Rosenström, Nike; Weichert, Franzi ...; Mansourian, Ali; Harrie, Lars; van Lammeren, Ro ...; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Environmental En ...; and Remote Sensing

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