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Proceedings of the International Academy of Ecology and Environmental Sciences, 2022, 12(4): 340-351
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Article

Evaluating land use and land cover change of Tinishu Abaya wetland found in Silite Zone, SNNPRS, Ethiopia

Aman Nesre1, Girma Tilahun2, Ahmed Hussein3
1Department of Natural Resource Management, Werabe University, Werabe, Ethiopia
2Department of Natural Resource Management, Hawassa University, P.O. BOX 05, Hawassa, Ethiopia
3Department of Animal Science, Werabe University, Werabe, Ethiopia

Received 19 July 2022;Accepted 5 September 2022;Published online 15 September 2022;Published 1 December 2022
IAEES

Abstract
Wetlands are among most important multi-functional and productive ecosystems on the earth but seriously threatened landscape by adverse human utilization practices and environmental changes like degradation. Thus, this study was conducted to determine the degradation level of Tinishu Abaya wetland in Silte zone, southern Ethiopia. The magnitude of land use and land cover (LULC) change was detected using Landsat images obtained in 1988, 2004, and 2018. LULC change and was analyzed using ArcGIS of version 10.4. The findings from satellite imagery analysis revealed the prevalence of wetland degradation within the study area. The result from LULC change between 1988 and 2018 confirmed severe degradation of wetland mostly due to the expansion of farmland. The highest incremental change was observed in farmland, while the highest decrement was seen in the grassland that reached nearly 50% of LULC in 1988. On the other hand, wetland and the lake showed a declining trend up to 40% and 25%, respectively, while settlement showed an incremental trend reaching up to 46%. Even if the LULC change occurred between 1988 and 2018 years, remarkable changes were observed during 2004-2018 (14 years). Therefore, developing alternative methods of wetland resources, creating awareness about the indirect benefits of wetlands, monitoring of upstream-downstream user relations, and developing an appropriate wetland management interventional policy are recommended.

Keywords degradation;land use and land cover change;remote sensing;satellite.


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