Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershed
The aim of this work is to investigate how the spatial variability of soil properties and soil erodibility ($K$ factor) were affected by the changes in land use allowed by irrigation with water from a reservoir in a semiarid area. To this end, three areas representative of different land uses (agrof...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-04-01
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| Series: | Solid Earth |
| Online Access: | http://www.solid-earth.net/6/383/2015/se-6-383-2015.pdf |
| _version_ | 1818287788014960640 |
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| author | V. Ferreira T. Panagopoulos R. Andrade C. Guerrero L. Loures |
| author_facet | V. Ferreira T. Panagopoulos R. Andrade C. Guerrero L. Loures |
| author_sort | V. Ferreira |
| collection | DOAJ |
| description | The aim of this work is to investigate how the spatial variability of soil
properties and soil erodibility ($K$ factor) were affected by the changes in
land use allowed by irrigation with water from a reservoir in a semiarid
area. To this end, three areas representative of different land uses
(agroforestry grassland, lucerne crop and olive orchard) were studied within
a 900 ha farm. The interrelationships between variables were analyzed by
multivariate techniques and extrapolated using geostatistics. The results
confirmed differences between land uses for all properties analyzed, which
was explained mainly by the existence of diverse management practices
(tillage, fertilization and irrigation), vegetation cover and local soil
characteristics. Soil organic matter, clay and nitrogen content decreased
significantly, while the <i>K</i> factor increased with intensive cultivation. The
HJ-Biplot methodology was used to represent the variation of soil
erodibility properties grouped in land uses. Native grassland was the least
correlated with the other land uses. The <i>K</i> factor demonstrated high correlation
mainly with very fine sand and silt. The maps produced with geostatistics
were crucial to understand the current spatial variability in the Alqueva
region. Facing the intensification of land-use conversion, a sustainable
management is needed to introduce protective measures to control soil
erosion. |
| first_indexed | 2024-12-13T01:46:03Z |
| format | Article |
| id | doaj.art-28ccefe9610a45f1a94c707b783f0842 |
| institution | Directory Open Access Journal |
| issn | 1869-9510 1869-9529 |
| language | English |
| last_indexed | 2024-12-13T01:46:03Z |
| publishDate | 2015-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Solid Earth |
| spelling | doaj.art-28ccefe9610a45f1a94c707b783f08422022-12-22T00:03:38ZengCopernicus PublicationsSolid Earth1869-95101869-95292015-04-016238339210.5194/se-6-383-2015Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershedV. Ferreira0T. Panagopoulos1R. Andrade2C. Guerrero3L. Loures4Research Center for Spatial and Organizational Dynamics, University of the Algarve, 8005 Faro, PortugalResearch Center for Spatial and Organizational Dynamics, University of the Algarve, 8005 Faro, PortugalResearch Center for Spatial and Organizational Dynamics, University of the Algarve, 8005 Faro, PortugalFaculty of Science and Technology, University of the Algarve, 8005 Faro, PortugalPolytechnic Institute of Portalegre, 7300 Portalegre, PortugalThe aim of this work is to investigate how the spatial variability of soil properties and soil erodibility ($K$ factor) were affected by the changes in land use allowed by irrigation with water from a reservoir in a semiarid area. To this end, three areas representative of different land uses (agroforestry grassland, lucerne crop and olive orchard) were studied within a 900 ha farm. The interrelationships between variables were analyzed by multivariate techniques and extrapolated using geostatistics. The results confirmed differences between land uses for all properties analyzed, which was explained mainly by the existence of diverse management practices (tillage, fertilization and irrigation), vegetation cover and local soil characteristics. Soil organic matter, clay and nitrogen content decreased significantly, while the <i>K</i> factor increased with intensive cultivation. The HJ-Biplot methodology was used to represent the variation of soil erodibility properties grouped in land uses. Native grassland was the least correlated with the other land uses. The <i>K</i> factor demonstrated high correlation mainly with very fine sand and silt. The maps produced with geostatistics were crucial to understand the current spatial variability in the Alqueva region. Facing the intensification of land-use conversion, a sustainable management is needed to introduce protective measures to control soil erosion.http://www.solid-earth.net/6/383/2015/se-6-383-2015.pdf |
| spellingShingle | V. Ferreira T. Panagopoulos R. Andrade C. Guerrero L. Loures Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershed Solid Earth |
| title | Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershed |
| title_full | Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershed |
| title_fullStr | Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershed |
| title_full_unstemmed | Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershed |
| title_short | Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershed |
| title_sort | spatial variability of soil properties and soil erodibility in the alqueva reservoir watershed |
| url | http://www.solid-earth.net/6/383/2015/se-6-383-2015.pdf |
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