Wetland mapping and evaluating the impacts on hydrology, using geospatial techniques: a case of Geba Watershed, Southwest Ethiopia
| Autor: | K. V. Suryabhagavan, Tesfaye Korme, Mintesnot Berhanu |
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| Rok vydání: | 2021 |
| Předmět: |
Hydrology
QE1-996.5 geography geography.geographical_feature_category Watershed Geospatial analysis Ecology water level Geology Wetland Shuttle Radar Topography Mission computer.software_genre water quality Water level Hydrology (agriculture) Threatened species Environmental science Water quality wetland loss climate computer QH540-549.5 agriculture Nature and Landscape Conservation |
| Zdroj: | Geology, Ecology, and Landscapes, Vol 0, Iss 0, Pp 1-18 (2021) |
| ISSN: | 2474-9508 |
| DOI: | 10.1080/24749508.2021.1953744 |
| Popis: | Wetlands are one of the world’s most important ecosystems threatened by man. This investigation explores the use of Landsat TM and OLI imageries with SRTM DEM for mapping them. Mapping and monitoring of wetlands is done with 86.66% accuracy. As a result, a loss of 21,400 ha yr−1 could be noted. Due to this, differences were also found in the water quality and groundwater level between the degraded and un-degraded areas. As most rivers within the watershed punctuated from the wetlands, their existence was determined based on the hydrological function. Wetland degradation occurred mainly due to climate and agricultural changes over time. Thus, geospatial techniques employed in the present study have proved very useful in simplification and visualization of wetland monitoring. |
| Databáze: | OpenAIRE |
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