Evaluation of keyline design using the simplified triangle method in Mediterranean agroecosystems
DOI:
https://doi.org/10.17398/3101-7177.2.176Palabras clave:
Soluciones basadas en la naturaleza, línea clave, método triángulo simplificado, humedad edáfica dehesaResumen
Extreme weather events and increased aridity pose a serious risk to agricultural production. Keyline design has been proposed as a water harvesting technique to promote plant production and overall ecosystem functioning, yet there is a lack of evidence about its effectiveness. The aim of this study was to evaluate the effect of keyline design on surface wetness properties in Mediterranean agroecosystems. The simplified triangle methodology was used to estimate moisture availability (Mo) and evapotranspiration fraction (EF) using Landsat 8 images. We compared tree-grass and grasslands where keyline have been implemented, with over 1,000 control plots across the 2018–2025 period. Keyline plots showed higher surface moisture (Mo), especially during winter and spring in tree-grass, but not in grasslands. EF values were significantly lower in keyline areas across all seasons compared to control areas for all systems. These results suggest a limited effect of the key line restricted to certain periods of the year and types of land use.
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Derechos de autor 2026 Víctor Rolo Romero, Laura Fragoso Campón, Elia Quirós, Gerardo Moreno Marcos (Autor/a)
Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-CompartirIgual 4.0.
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