Analysis of the Impact of Land Use Changes on Soil Erosion Intensity and Sediment Yield Using the IntErO Model in the Talar Watershed of Iran
Land use change is known as one of the main influencing factors on soil erosion and sediment production processes. The objective of the article is to study on how land use change impacts on soil erosion by using Intensity of Erosion and Outflow (IntErO) as a process-oriented soil erosion model. The...
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MDPI AG
2021-03-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/6/881 |
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| author | Maziar Mohammadi Abdulvahed Khaledi Khaledi Darvishan Velibor Spalevic Branislav Dudic Paolo Billi |
| author_facet | Maziar Mohammadi Abdulvahed Khaledi Khaledi Darvishan Velibor Spalevic Branislav Dudic Paolo Billi |
| author_sort | Maziar Mohammadi |
| collection | DOAJ |
| description | Land use change is known as one of the main influencing factors on soil erosion and sediment production processes. The objective of the article is to study on how land use change impacts on soil erosion by using Intensity of Erosion and Outflow (IntErO) as a process-oriented soil erosion model. The study has been conducted under land use changes within the period of 1991–2014 in the Talar watershed located in northern Iran. The GIS environment was used to prepare the required maps including Digital Elevation Model (DEM), geology, land use, soil, and drainage network. The climatology data including average annual precipitation and air temperature as well as the volume of torrential rain were extracted from the data of meteorological stations located inside and around the study watershed. The results indicates that, within the period of 1991–2014, the forest area decreased by 12,478.04 ha (6%), while the other land uses including rainfed agriculture, rangeland, irrigated agriculture, and residential area increased by 7248.25, 4481.05, 476.00, and 273.95 ha, respectively. The estimated outflow with 100 year return interval was 432.14 m<sup>3</sup> s<sup>−1</sup> in 1991, which increased to 446.91 m<sup>3</sup> s<sup>−1</sup> in 2014. It can be concluded that the probability of larger and/or more frequent floods waves in the Talar River is expected to increase. In addition, the amount of production of erosion material (gross erosion) in the watershed increased from 1,918,186 to 2,183,558 m<sup>3</sup> yr<sup>−1</sup>, and the real soil losses per year (sediment yield) of the watershed increased from 440,482.4 to 501,421.3 m<sup>3</sup> yr<sup>−1</sup>. The results clearly emphasized how the lack of appropriate land management and planning leads to increase the maximum flow discharge and sediment yield of the watershed. |
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| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T12:58:33Z |
| publishDate | 2021-03-01 |
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| series | Water |
| spelling | doaj.art-e94afd80066f4fcc80399c441a9b0a3d2023-11-21T11:45:08ZengMDPI AGWater2073-44412021-03-0113688110.3390/w13060881Analysis of the Impact of Land Use Changes on Soil Erosion Intensity and Sediment Yield Using the IntErO Model in the Talar Watershed of IranMaziar Mohammadi0Abdulvahed Khaledi Khaledi Darvishan1Velibor Spalevic2Branislav Dudic3Paolo Billi4Department of Watershed Management Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor 46417-76489, IranDepartment of Watershed Management Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor 46417-76489, IranDepartment of Geography, Faculty of Philosophy, University of Montenegro, 81400 Niksic, MontenegroFaculty of Management, Comenius University in Bratislava, 82005 Bratislava, SlovakiaInternational Platform for Dryland Research and Education, Arid Land Research Center, Tottori University, Tottori 680-0001, JapanLand use change is known as one of the main influencing factors on soil erosion and sediment production processes. The objective of the article is to study on how land use change impacts on soil erosion by using Intensity of Erosion and Outflow (IntErO) as a process-oriented soil erosion model. The study has been conducted under land use changes within the period of 1991–2014 in the Talar watershed located in northern Iran. The GIS environment was used to prepare the required maps including Digital Elevation Model (DEM), geology, land use, soil, and drainage network. The climatology data including average annual precipitation and air temperature as well as the volume of torrential rain were extracted from the data of meteorological stations located inside and around the study watershed. The results indicates that, within the period of 1991–2014, the forest area decreased by 12,478.04 ha (6%), while the other land uses including rainfed agriculture, rangeland, irrigated agriculture, and residential area increased by 7248.25, 4481.05, 476.00, and 273.95 ha, respectively. The estimated outflow with 100 year return interval was 432.14 m<sup>3</sup> s<sup>−1</sup> in 1991, which increased to 446.91 m<sup>3</sup> s<sup>−1</sup> in 2014. It can be concluded that the probability of larger and/or more frequent floods waves in the Talar River is expected to increase. In addition, the amount of production of erosion material (gross erosion) in the watershed increased from 1,918,186 to 2,183,558 m<sup>3</sup> yr<sup>−1</sup>, and the real soil losses per year (sediment yield) of the watershed increased from 440,482.4 to 501,421.3 m<sup>3</sup> yr<sup>−1</sup>. The results clearly emphasized how the lack of appropriate land management and planning leads to increase the maximum flow discharge and sediment yield of the watershed.https://www.mdpi.com/2073-4441/13/6/881land use changesland managementerosion potentialGavrilovic methodIntErOsensitivity analysis |
| spellingShingle | Maziar Mohammadi Abdulvahed Khaledi Khaledi Darvishan Velibor Spalevic Branislav Dudic Paolo Billi Analysis of the Impact of Land Use Changes on Soil Erosion Intensity and Sediment Yield Using the IntErO Model in the Talar Watershed of Iran Water land use changes land management erosion potential Gavrilovic method IntErO sensitivity analysis |
| title | Analysis of the Impact of Land Use Changes on Soil Erosion Intensity and Sediment Yield Using the IntErO Model in the Talar Watershed of Iran |
| title_full | Analysis of the Impact of Land Use Changes on Soil Erosion Intensity and Sediment Yield Using the IntErO Model in the Talar Watershed of Iran |
| title_fullStr | Analysis of the Impact of Land Use Changes on Soil Erosion Intensity and Sediment Yield Using the IntErO Model in the Talar Watershed of Iran |
| title_full_unstemmed | Analysis of the Impact of Land Use Changes on Soil Erosion Intensity and Sediment Yield Using the IntErO Model in the Talar Watershed of Iran |
| title_short | Analysis of the Impact of Land Use Changes on Soil Erosion Intensity and Sediment Yield Using the IntErO Model in the Talar Watershed of Iran |
| title_sort | analysis of the impact of land use changes on soil erosion intensity and sediment yield using the intero model in the talar watershed of iran |
| topic | land use changes land management erosion potential Gavrilovic method IntErO sensitivity analysis |
| url | https://www.mdpi.com/2073-4441/13/6/881 |
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