RT journal article
T1 Hydrological Alteration Index as an Indicator of the Calibration Complexity of Water Quantity and Quality Modeling in the Context of Global Change
A1 Cakir, Roxelane
A1 Raimonet, Mélanie
A1 Sauvage, Sabine
A1 Paredes-Arquiola, Javier
A1 Grusson, Youen
A1 Roset, Laure
A1 Meaurio, Maite
A1 Navarro, Enrique
A1 Sevilla-Callejo, Miguel
A1 Lechuga-Crespo, Juan Luis
A1 Gómiz Pascual, Juan Jesús
A1 Bodoque, José María
A1 Sánchez-Pérez, José Miguel
A2 Física Aplicada
K1 SWAT
K1 calibration
K1 large-scale
K1 water resource
K1 quality
K1 global change
AB Modeling is a useful way to understand human and climate change impacts on the water resources of agricultural watersheds. Calibration and validation methodologies are crucial in forecasting assessments. This study explores the best calibration methodology depending on the level of hydrological alteration due to human-derived stressors. The Soil and Water Assessment Tool (SWAT) model is used to evaluate hydrology in South-West Europe in a context of intensive agriculture and water scarcity. The Index of Hydrological Alteration (IHA) is calculated using discharge observation data. A comparison of two SWAT calibration methodologies are done; a conventional calibration (CC) based on recorded in-stream water quality and quantity and an additional calibration (AC) adding crop managements practices. Even if the water quality and quantity trends are similar between CC and AC, water balance, irrigation and crop yields are different. In the context of rainfall decrease, water yield decreases in both CC and AC, while crop productions present opposite trends (+33% in CC and -31% in AC). Hydrological performance between CC and AC is correlated to IHA: When the level of IHA is under 80%, AC methodology is necessary. The combination of both calibrations appears essential to better constrain the model and to forecast the impact of climate change or anthropogenic influences on water resources.
PB MDPI
SN 2073-4441
YR 2020
FD 2020-01
LK http://hdl.handle.net/10498/22784
UL http://hdl.handle.net/10498/22784
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026