CEU Electronic Theses and Dissertations, 2021
| Author | Pujiastuti, Isna |
|---|---|
| Title | Analyzing Land Degradation in Kyrgyzstan: Climate Factors, Proportion of Degraded Land, and Relationship with Environmental Factors using Publicly Available Geospatial and Satellite Data |
| Summary | Land degradation is one of the environmental factors which has a huge impact on human civilization, especially agriculture. Kyrgyzstan, a country with agriculture as main activities, land degradation issue is very crucial to study. Spatial analysis is one of the robust techniques to study land degradation because the amount of publicly available geospatial data source is abundant. The publicly available spatial and statistical analysis tools, especially Google Earth Engine, Trends.Earth extension in QGIS software and RStudio were used. The proportion of degraded land over the total land resulted that 37,32% of the total area is degraded. This result is like one land productivity which one among three sub-indicators. Thus, the analysis of the climate factor will be focused on the land productivity presented in NDVI. The climate factor includes temperature, precipitation, and PDSI. The highest correlation presented by NDVI-Precipitation with significant negative correlation found in 23.93% of the total area. The environmental factors and land degradation relationship analysis is limited by publicly available geospatial satellite and data. The environmental variable use specifically population, climate factors (temperature, precipitation, PET, aridity), biophysical factors (landform, land cover, landform, slope, biomass density, carbon storage, and ecoregion), and agriculture including crops and livestock. The relationship analysis applied to determine the indication of land degradation driving factors. Bivariate analysis namely Chi-squared test, Kruskal Wallis test, and Spearman Rank rho test is used. Most environmental factors showed there is a significant relationship or has influence with land degradation. The distribution of total variable usually found in the stable lands, except population, bare lands, poultry density, and sheep density. |
| Supervisor | Lagutov, Viktor |
| Department | Environment Sciences and Policy MA |
| Full text | https://www.etd.ceu.edu/2021/pujiastuti_isna.pdf |
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