Impacts of land-use/land-cover changes on nutrient losses in agricultural catchment, southern Ethiopia
نویسندگان
چکیده
Abstract Assessing the impact of land-use/land-cover (LULC) change and nutrient loads on water systems is a key issue, where different uses raise water-quality concerns. This study aimed to enumerate extent LULC from 1986 2018, its measurable impacts losses major pollution areas based SWAT in Bilate catchment, southern Ethiopia. The sequential uncertainty fitting version two (SUFI-2) algorithm SWAT-CUP was used calibration validation. Calibration validation showed good agreement between observed simulated values. Results that significant changes loss occurred, following direction 1986–2002 2002–2018. increase agricultural land built-up area accounted for 9.46% 0.69% catchment area, respectively. total phosphorus nitrogen reached 2.52–1.27 kg/ha 15.41–31.69 Sub-basins 11, 14, 16, 17, 18 55 were most important with sources identified. reduce quality fish productivity Lake Abaya. results this improved understanding loading provided required knowledge integrating management.
منابع مشابه
Land Use and Land Cover Change Detection in the Upper Dijo River Catchment, Silte Zone, Southern Ethiopia
Remote sensing and gis-based Land use and land cover change detection in the upper Dijo river catchment, Silte zone, southern Ethiopia Working papers on population and land use change in central Ethiopia, nr. 17 ABSTRACT Land use and land cover (LULC) change is one of the challenges which strongly influence the process of agricultural development and the food security situation in Ethiopia in g...
متن کاملImpacts of historical climate and land cover changes on ozone
Introduction Conclusions References Tables Figures
متن کاملImpacts of changes in climate, land use and land cover on atmospheric mercury
Mercury is an important pollutant that can be transported globally due to its long lifetime in the atmosphere. Atmosphere-surface exchange is a major process affecting the cycling of mercury in the global environment and its impacts on food webs. We investigate the sensitivities of the air-surface exchange, atmospheric transport, and budget of mercury to projected 2000e2050 changes in climate a...
متن کاملChanges in land cover, rainfall and stream flow in Upper Gilgel Abbay catchment, Blue Nile basin – Ethiopia
In this study we evaluated changes in land cover and rainfall in the Upper Gilgel Abbay catchment in the Upper Blue Nile basin and how changes affected stream flow in terms of annual flow, high flows and low flows. Land cover change assessment was through classification analysis of remote sensing based land cover data while assessments on rainfall and stream flow data are by statistical analysi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Water Science & Technology: Water Supply
سال: 2022
ISSN: ['1606-9749', '1607-0798']
DOI: https://doi.org/10.2166/ws.2022.130