Evaluating InVEST model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin: Implications for land managers

This study was aimed to evaluate the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) Sediment Delivery Ratio (SDR) model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin, Ethiopia with a case study in the Andassa and Koga wate...

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Autores principales:	Temesgen Gashaw, Amare Bantider, Gete Zeleke, Tena Alamirew, Walle Jemberu, Abeyou W. Worqlul, Yihun T. Dile, Woldeamlak Bewket, Derege T. Meshesha, Anwar A. Adem, Solomon Addisu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Soil loss Sediment export InVEST SDR Calibration Land management Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/203e5cc2ce214f6a80c359cd1e5de756
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spelling	oai:doaj.org-article:203e5cc2ce214f6a80c359cd1e5de7562021-11-20T05:15:45ZEvaluating InVEST model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin: Implications for land managers2667-010010.1016/j.envc.2021.100381https://doaj.org/article/203e5cc2ce214f6a80c359cd1e5de7562021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2667010021003553https://doaj.org/toc/2667-0100This study was aimed to evaluate the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) Sediment Delivery Ratio (SDR) model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin, Ethiopia with a case study in the Andassa and Koga watersheds. Inputs maps required for InVEST SDR such as rainfall erosivity and soil erodablity factors, Digital Elevation Model (DEM) and land use maps were prepared. Calibration of InVEST SDR was made using the sediment yield data collected at the outlets of the corresponding study watersheds. Model predictions showed different pattern and rates of net soil loss, and sediment export rates in the study watersheds. The result revealed that net soil loss was 58.2 and 27.3 t ha−1 yr−1 for Andassa and Koga watersheds, respectively. The observed sediment yield of Andassa watershed was 19.5 t ha−1 yr−1 while the modeled sediment export with InVEST SDR was 18 t ha−1 yr−1. On the other hand, the observed and simulated sediment yield of Koga watershed was 6 t ha−1 yr−1 and 5.1 t ha−1 yr−1, respectively. The estimated soil loss rates in both watersheds is more than the tolerable soil loss (1–6 t ha−1 yr−1) and soil formation (10–14 t ha−1 yr−1) rates of the study region. The results indicated that InVEST SDR could be used for identifying erosion hotspots and prioritizations of sub-watersheds for soil and water conservation (SWC) planning in data scarce regions of the Upper Blue Nile Basin in particular and the Ethiopian highlands in general.Temesgen GashawAmare BantiderGete ZelekeTena AlamirewWalle JemberuAbeyou W. WorqlulYihun T. DileWoldeamlak BewketDerege T. MesheshaAnwar A. AdemSolomon AddisuElsevierarticleSoil lossSediment exportInVEST SDRCalibrationLand managementEnvironmental sciencesGE1-350ENEnvironmental Challenges, Vol 5, Iss , Pp 100381- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Soil loss Sediment export InVEST SDR Calibration Land management Environmental sciences GE1-350
spellingShingle	Soil loss Sediment export InVEST SDR Calibration Land management Environmental sciences GE1-350 Temesgen Gashaw Amare Bantider Gete Zeleke Tena Alamirew Walle Jemberu Abeyou W. Worqlul Yihun T. Dile Woldeamlak Bewket Derege T. Meshesha Anwar A. Adem Solomon Addisu Evaluating InVEST model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin: Implications for land managers
description	This study was aimed to evaluate the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) Sediment Delivery Ratio (SDR) model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin, Ethiopia with a case study in the Andassa and Koga watersheds. Inputs maps required for InVEST SDR such as rainfall erosivity and soil erodablity factors, Digital Elevation Model (DEM) and land use maps were prepared. Calibration of InVEST SDR was made using the sediment yield data collected at the outlets of the corresponding study watersheds. Model predictions showed different pattern and rates of net soil loss, and sediment export rates in the study watersheds. The result revealed that net soil loss was 58.2 and 27.3 t ha−1 yr−1 for Andassa and Koga watersheds, respectively. The observed sediment yield of Andassa watershed was 19.5 t ha−1 yr−1 while the modeled sediment export with InVEST SDR was 18 t ha−1 yr−1. On the other hand, the observed and simulated sediment yield of Koga watershed was 6 t ha−1 yr−1 and 5.1 t ha−1 yr−1, respectively. The estimated soil loss rates in both watersheds is more than the tolerable soil loss (1–6 t ha−1 yr−1) and soil formation (10–14 t ha−1 yr−1) rates of the study region. The results indicated that InVEST SDR could be used for identifying erosion hotspots and prioritizations of sub-watersheds for soil and water conservation (SWC) planning in data scarce regions of the Upper Blue Nile Basin in particular and the Ethiopian highlands in general.
format	article
author	Temesgen Gashaw Amare Bantider Gete Zeleke Tena Alamirew Walle Jemberu Abeyou W. Worqlul Yihun T. Dile Woldeamlak Bewket Derege T. Meshesha Anwar A. Adem Solomon Addisu
author_facet	Temesgen Gashaw Amare Bantider Gete Zeleke Tena Alamirew Walle Jemberu Abeyou W. Worqlul Yihun T. Dile Woldeamlak Bewket Derege T. Meshesha Anwar A. Adem Solomon Addisu
author_sort	Temesgen Gashaw
title	Evaluating InVEST model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin: Implications for land managers
title_short	Evaluating InVEST model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin: Implications for land managers
title_full	Evaluating InVEST model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin: Implications for land managers
title_fullStr	Evaluating InVEST model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin: Implications for land managers
title_full_unstemmed	Evaluating InVEST model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin: Implications for land managers
title_sort	evaluating invest model for estimating soil loss and sediment export in data scarce regions of the abbay (upper blue nile) basin: implications for land managers
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/203e5cc2ce214f6a80c359cd1e5de756
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Evaluating InVEST model for estimating soil loss and sediment export in data scarce regions of the Abbay (Upper Blue Nile) Basin: Implications for land managers

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