Organic Carbon Storage in Waterlogging Soils in Ávila, Spain: A Traditional Agrosilvopastoral Region

María P. Alvarez-Castellanos, Laura Escudero-Campos, Jorge Mongil-Manso, Francisco J. San Jose, Adrián Jiménez-Sánchez and Raimundo Jiménez-Ballesta ()
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María P. Alvarez-Castellanos: Department of Environment and Agroforestry, Faculty of Sciences and Arts, Catholic University of Ávila, 05005 Ávila, Spain
Laura Escudero-Campos: Kerbest Foundation, 05005 Ávila, Spain
Jorge Mongil-Manso: Department of Environment and Agroforestry, Faculty of Sciences and Arts, Forest, Water & Soil Research Group, Catholic University of Ávila, 05005 Ávila, Spain
Francisco J. San Jose: Department of Environment and Agroforestry, Faculty of Sciences and Arts, Catholic University of Ávila, 05005 Ávila, Spain
Adrián Jiménez-Sánchez: Kerbest Foundation, 05005 Ávila, Spain
Raimundo Jiménez-Ballesta: Department of Geology and Geochemistry, Autónoma University of Madrid, 28049 Madrid, Spain

Land, 2024, vol. 13, issue 10, 1-16

Abstract: Soils play a crucial role in the protection, management, and ecological understanding of the La Moraña region, located in Ávila province, Central Spain, which has a moderate population, traditional agriculture, livestock farming, and low industrial activity, resulting in relatively low environmental degradation. The region’s soils often experience prolonged water stagnation, influencing its agronomy, ecology, and economy. This study aimed to estimate and understand the soil’s role in the C sequestration of an agrosilvopastoral system under conditions of temporary water stagnation and different land uses. The results showed that ryegrass-magaza and Pinus pinaster show more content in soil carbon sequestration storage (98.7 and 92.4 Mg per hectare) compared to the adjacent degraded rangeland (75.8 and 63.9 Mg ha −1 ). Arenosols exhibited a higher total amount of SOC stocks. The soil profile with ryegrass sequestered more nitrogen (9.7 Mg ha −1 ) than other land uses; moreover, Arenosols have a lower nitrogen sequestration capacity even in low-forest conditions. The study highlights significant differences in carbon accumulation due to the management practices, temporary water layers, and parent material.

Keywords: climate change; forestation; soil organic matter; soil carbon sequestration; Pinus pinaster; grassland; reduced tillage; sustainable agriculture; organic carbon reserves (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2024
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