Effect of Cropland Abandonment on Soil Carbon Stock in an Agroforestry System in Southwestern Spain

The low profitability of agricultural products in a globalized market context is causing the abandonment of less profitable agroforestry systems in Spain. This fact is implicated in a change in land use, increasing the forest area, which could alter the carbon stock in the soil. Thus, the objective...

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Main Authors: Juan Carlos Alías, José Antonio Mejías, Natividad Chaves
Format: Article
Language:English
Published: MDPI AG 2022-03-01
Series:Land
Subjects:
Online Access:https://www.mdpi.com/2073-445X/11/3/425
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author Juan Carlos Alías
José Antonio Mejías
Natividad Chaves
author_facet Juan Carlos Alías
José Antonio Mejías
Natividad Chaves
author_sort Juan Carlos Alías
collection DOAJ
description The low profitability of agricultural products in a globalized market context is causing the abandonment of less profitable agroforestry systems in Spain. This fact is implicated in a change in land use, increasing the forest area, which could alter the carbon stock in the soil. Thus, the objective of this study was to determine if the abandonment of rural areas and the change in land use has an impact on the soil organic carbon stock in agroforestry systems in southwestern Spain. Through historical aerial photographs and current satellite images, sites were identified where samples of abandoned agricultural soils in the 1950s were collected. They were compared with soil samples from adjacent locations whose agricultural activities continue to this day. After more than 60 years, the abandonment of agricultural activity is associated with a 54% increase in C concentration and 34.8% in soil organic carbon in the upper 30 cm of soil profiles. Therefore, the abandonment of agricultural land has influenced the carbon stock of this territory, becoming a carbon sink.
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spelling doaj.art-18389964646d4956be957ea2436843712023-11-30T21:11:42ZengMDPI AGLand2073-445X2022-03-0111342510.3390/land11030425Effect of Cropland Abandonment on Soil Carbon Stock in an Agroforestry System in Southwestern SpainJuan Carlos Alías0José Antonio Mejías1Natividad Chaves2Department of Plant Biology, Ecology and Earth Sciences, Faculty of Science, University of Extremadura, 06006 Badajoz, SpainDepartment of Plant Biology, Ecology and Earth Sciences, Faculty of Science, University of Extremadura, 06006 Badajoz, SpainDepartment of Plant Biology, Ecology and Earth Sciences, Faculty of Science, University of Extremadura, 06006 Badajoz, SpainThe low profitability of agricultural products in a globalized market context is causing the abandonment of less profitable agroforestry systems in Spain. This fact is implicated in a change in land use, increasing the forest area, which could alter the carbon stock in the soil. Thus, the objective of this study was to determine if the abandonment of rural areas and the change in land use has an impact on the soil organic carbon stock in agroforestry systems in southwestern Spain. Through historical aerial photographs and current satellite images, sites were identified where samples of abandoned agricultural soils in the 1950s were collected. They were compared with soil samples from adjacent locations whose agricultural activities continue to this day. After more than 60 years, the abandonment of agricultural activity is associated with a 54% increase in C concentration and 34.8% in soil organic carbon in the upper 30 cm of soil profiles. Therefore, the abandonment of agricultural land has influenced the carbon stock of this territory, becoming a carbon sink.https://www.mdpi.com/2073-445X/11/3/425carbon stockSOCland use changesland abandonment
spellingShingle Juan Carlos Alías
José Antonio Mejías
Natividad Chaves
Effect of Cropland Abandonment on Soil Carbon Stock in an Agroforestry System in Southwestern Spain
Land
carbon stock
SOC
land use changes
land abandonment
title Effect of Cropland Abandonment on Soil Carbon Stock in an Agroforestry System in Southwestern Spain
title_full Effect of Cropland Abandonment on Soil Carbon Stock in an Agroforestry System in Southwestern Spain
title_fullStr Effect of Cropland Abandonment on Soil Carbon Stock in an Agroforestry System in Southwestern Spain
title_full_unstemmed Effect of Cropland Abandonment on Soil Carbon Stock in an Agroforestry System in Southwestern Spain
title_short Effect of Cropland Abandonment on Soil Carbon Stock in an Agroforestry System in Southwestern Spain
title_sort effect of cropland abandonment on soil carbon stock in an agroforestry system in southwestern spain
topic carbon stock
SOC
land use changes
land abandonment
url https://www.mdpi.com/2073-445X/11/3/425
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AT natividadchaves effectofcroplandabandonmentonsoilcarbonstockinanagroforestrysysteminsouthwesternspain