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El método mejorado del tocón (isum) para evaluar procesos de erosión del suelo en plantas injertadas utilizando medidas topográficas in situ

Data de lectura: 2023-02-16 Centre: | ID: 10251/191874

Autor/a: Rodrigo Comino, Jesus

Director/a: Cerdá Bolinches, Artemio ; Terol Esparza, Enric

Resum

[EN] Policy makers, farmers and rural stakeholders need to be aware of the relevance of soil erosion as an irreversible process of land degradation. This is key to achieving land degradation neutrality and sustainability for the humankind and natural ecosystems. Especially agricultural areas are affected by soil erosion which threatens soil quality and subsequently food security. Therefore, it is necessary to develop new techniques that are visually attractive, easy to use and efficient in disseminating the results. ISUM (Improve Stock Unearthing Method) is a proven procedure for estimating and mapping soil mobilization rates and erosion processes. To achieve this goal, the use of the graft as a biomarker by performing in situ topographic measurements (every 10 cm) along perpendicular transects allows: i) to explain the factors that activate soil erosion processes such as tillage, age of the plantation, parent material or position on slopes; ii) complement other well-proven methods such as RUSLE (Revised Universal Soil Loss Equation), CI (Connectivity Index) or erosion plots; and, iii) detect critical areas affected by the depletion, accumulation or mobilization of the soil. In this doctoral thesis, it is intended to show how a new improvement of this method has been developed in different crops (vineyards, citrus, persimmons, etc.), under different environmental conditions (parent rock, plant ages, soil management or slope) with various geomatic procedures (interpolation methods and geostatistical analysis, measurements and topographic models) using GIS techniques. The results aim to demonstrate the usefulness of an easy-to-learn, fast-to-apply and low-cost method to be applied to different types of grafted crops and to be a worldwide reference for comparative studies, for example, within the soil geography, agronomy or geomatics engineering. (Summary)

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