| Title | Scenario-Based LULC Dynamics Projection Using the CA-Markov Model on Upper Awash Basin (UAB), Ethiopia |
|---|---|
| ID_Doc | 67631 |
| Authors | Gebresellase, SH; Wu, ZY; Xu, HT; Muhammad, WI |
| Title | Scenario-Based LULC Dynamics Projection Using the CA-Markov Model on Upper Awash Basin (UAB), Ethiopia |
| Year | 2023 |
| Published | Sustainability, 15, 2 |
| Abstract | Understanding the spatiotemporal changes in land use and land cover (LULC) in the watershed is crucial for maintaining the sustainability of land resources. This study intents to understand the historical (1972-2015) and future (2030-2060) spatiotemporal distribution of LULC changes in the Upper Awash Basin (UAB). The supervised Maximum Likelihood Classifier technique (MLC) was implemented for historical LULC classification. The Cellular Automata-Markov (CA-Markov) model was employed to project two scenarios of LULC, 'business-as-usual' (BAU) and 'governance' (Gov). Results from the historical LULC of the study area show that urban and cropland areas increased from 52.53 km(2) (0.45%) to 354.14 km(2) (3.01%) and 6040.75 km(2) (51.25%) to 8472.45 km(2) (71.97%), respectively. Whereas grassland, shrubland, and water bodies shrunk from 2052.08 km(2) (17.41%) to 447.63 km(2) (3.80%), 2462.99 km(2) (20.89%) to 1399.49 km(2) (11.89%) and 204.87 km(2) (1.74%) to 152.44 km(2) (1.29%), respectively, from 1972 to 2015. The historical LULC results indicated that the forest area was highly vulnerable and occupied by urban and cropland areas. The projected LULC under the BAU scenario shows substantial cropland and urban area expansion, increasing from 8472.45 km(2) (71.97%) in 2015 to 9159.21 km(2) (77.71%) in 2060 and 354.14 km(2) (3.1%) in 2015, 1196.78 km(2) (10.15%) in 2060, respectively, at the expense of vegetation cover. These results provide insight intothe LULC changes in the area, thus requiring urgent attention by watershed managers, policymakers, and stakeholders to provide sustainable practices for the UAB. Meanwhile, the Gov scenario indicates an increase in vegetable covers and a decrease in cropland, encouraging sustainable development compared to the BAU scenario. |
| https://www.mdpi.com/2071-1050/15/2/1683/pdf?version=1673843200 |
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