Spatial variations of runoff thresholds associated with changes in land use over the period 1990-2018 in the Mediterranean side of Andalusia
The runoff threshold is the amount of precipitation that exceeds the infiltration capacity of the soil and from which water begins to flow over the land surface. Its spatial variation will determine the appearance of a series of processes and risks such as soil erosion, sediment transport, water pol...
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Universidad de Alicante, Instituto Interuniversitario de Geografía
2024-07-01
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| Series: | Investigaciones Geográficas |
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| Online Access: | https://www.investigacionesgeograficas.com/article/view/25990 |
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| author | Héctor Álvarez-García José Antonio Sillero-Medina María Eugenia Pérez-González José Damián Ruiz-Sinoga |
| author_facet | Héctor Álvarez-García José Antonio Sillero-Medina María Eugenia Pérez-González José Damián Ruiz-Sinoga |
| author_sort | Héctor Álvarez-García |
| collection | DOAJ |
| description | The runoff threshold is the amount of precipitation that exceeds the infiltration capacity of the soil and from which water begins to flow over the land surface. Its spatial variation will determine the appearance of a series of processes and risks such as soil erosion, sediment transport, water pollution or flooding, all of which are of great interest in the field of land planning and management. This article provides an update of the runoff threshold in the territorial scope of the Demarcación Hidrográfica de las Cuencas Mediterráneas Andaluzas and evaluates the spatial changes occurred between 1990 and 2018 because of land use dynamics. For this purpose, the methodology described in Regulation 5.2-IC related to surface drainage, of the Instrucción de Carreteras (Ministerio de Obras Públicas y Urbanismo [MOPU], 1990; Ministerio de Fomento, 2016, 2019) was used. The results obtained show very contrasting runoff threshold values, with maximums in the western sector and minimums in the eastern sector. On the other hand, the dynamics of land use changes have led to a significant increase in impermeable surfaces and sclerophyllous vegetation, which has generated a clear reduction in runoff threshold values in different areas, mainly in the eastern region. Specifically, the former forest areas, currently occupied by sclerophyllous vegetation, stand out, with a reduction of 17 mm over an area of approximately 229.1 km2. The conversion of agricultural lands into urban areas is also noteworthy, with a decrease in their retention capacity by up to 14 mm of precipitation, covering a total area of 97.1 km2. |
| format | Article |
| id | doaj-art-93d0f1fb5d774e5e9fe11784caf5eb23 |
| institution | OA Journals |
| issn | 1989-9890 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | Universidad de Alicante, Instituto Interuniversitario de Geografía |
| record_format | Article |
| series | Investigaciones Geográficas |
| spelling | doaj-art-93d0f1fb5d774e5e9fe11784caf5eb232025-08-20T01:58:31ZengUniversidad de Alicante, Instituto Interuniversitario de GeografíaInvestigaciones Geográficas1989-98902024-07-0182254210.14198/INGEO.2599034197Spatial variations of runoff thresholds associated with changes in land use over the period 1990-2018 in the Mediterranean side of AndalusiaHéctor Álvarez-García0https://orcid.org/0000-0002-5481-0434José Antonio Sillero-Medina1https://orcid.org/0000-0002-7856-3239María Eugenia Pérez-González2https://orcid.org/0000-0002-9416-5003José Damián Ruiz-Sinoga3https://orcid.org/0000-0002-2303-0881University Institute of Habitat, Territory and Digitalization, University of MalagaUniversity Institute of Habitat, Territory and Digitalization, University of Malaga and Department of Geography, Complutense University of MadridDepartment of Geography, Complutense University of MadridUniversity Institute of Habitat, Territory and Digitalization, University of MalagaThe runoff threshold is the amount of precipitation that exceeds the infiltration capacity of the soil and from which water begins to flow over the land surface. Its spatial variation will determine the appearance of a series of processes and risks such as soil erosion, sediment transport, water pollution or flooding, all of which are of great interest in the field of land planning and management. This article provides an update of the runoff threshold in the territorial scope of the Demarcación Hidrográfica de las Cuencas Mediterráneas Andaluzas and evaluates the spatial changes occurred between 1990 and 2018 because of land use dynamics. For this purpose, the methodology described in Regulation 5.2-IC related to surface drainage, of the Instrucción de Carreteras (Ministerio de Obras Públicas y Urbanismo [MOPU], 1990; Ministerio de Fomento, 2016, 2019) was used. The results obtained show very contrasting runoff threshold values, with maximums in the western sector and minimums in the eastern sector. On the other hand, the dynamics of land use changes have led to a significant increase in impermeable surfaces and sclerophyllous vegetation, which has generated a clear reduction in runoff threshold values in different areas, mainly in the eastern region. Specifically, the former forest areas, currently occupied by sclerophyllous vegetation, stand out, with a reduction of 17 mm over an area of approximately 229.1 km2. The conversion of agricultural lands into urban areas is also noteworthy, with a decrease in their retention capacity by up to 14 mm of precipitation, covering a total area of 97.1 km2.https://www.investigacionesgeograficas.com/article/view/25990runoff thresholdland usesandalusian mediterranean basinwater managementsoil moistureinfiltration capacity |
| spellingShingle | Héctor Álvarez-García José Antonio Sillero-Medina María Eugenia Pérez-González José Damián Ruiz-Sinoga Spatial variations of runoff thresholds associated with changes in land use over the period 1990-2018 in the Mediterranean side of Andalusia Investigaciones Geográficas runoff threshold land uses andalusian mediterranean basin water management soil moisture infiltration capacity |
| title | Spatial variations of runoff thresholds associated with changes in land use over the period 1990-2018 in the Mediterranean side of Andalusia |
| title_full | Spatial variations of runoff thresholds associated with changes in land use over the period 1990-2018 in the Mediterranean side of Andalusia |
| title_fullStr | Spatial variations of runoff thresholds associated with changes in land use over the period 1990-2018 in the Mediterranean side of Andalusia |
| title_full_unstemmed | Spatial variations of runoff thresholds associated with changes in land use over the period 1990-2018 in the Mediterranean side of Andalusia |
| title_short | Spatial variations of runoff thresholds associated with changes in land use over the period 1990-2018 in the Mediterranean side of Andalusia |
| title_sort | spatial variations of runoff thresholds associated with changes in land use over the period 1990 2018 in the mediterranean side of andalusia |
| topic | runoff threshold land uses andalusian mediterranean basin water management soil moisture infiltration capacity |
| url | https://www.investigacionesgeograficas.com/article/view/25990 |
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