TY - JOUR
T1 - Changes in measured spatiotemporal patterns of hydrological response after partial deforestation in a headwater catchment
AU - Wiekenkamp, I.
AU - Huisman, J. A.
AU - Bogena, H. R.
AU - Graf, A.
AU - Lin, H. S.
AU - Drüe, C.
AU - Vereecken, H.
N1 - Funding Information:
We would like to thank all volunteers and technicians that helped in setting up and maintaining the wireless sensor network SoilNet, the Eddy Covariance towers (EC1 and EC2), the climate station and the runoff gauges, in specific Bernd Schilling, Ansgar Weuthen, Marius Schmidt, Ferdinand Engels, Uwe Baltes, Daniel Dolfus, Martina Kettler, Nicole Adels and Normen Hermes. Furthermore, we thank the German Weather Service DWD for providing the precipitation data that was used in this study. Finally, we gratefully acknowledge the Helmholtz Association for hardware funding through the project TERENO (TERrestrial Environmental Observatories, www.tereno.net ) and the Deutsche Forschungsgemeinschaft (DFG) for personnel costs funding through the Transregional Collaborative Research Centre 32, sub-project Z3 ( www.tr32.de ). A. Graf would like to thank the German Federal Ministry of Education and Research (BMBF) for financial support for the project “IDAS-GHG” (FKZ 01LN1313A) within the program “Nachwuchsgruppen globaler Wandel 4+1”.
Publisher Copyright:
© 2016 Elsevier B.V.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2016/11/1
Y1 - 2016/11/1
N2 - Although the hydrological effects of land use change have been studied extensively, only few datasets are available to accurately describe, model, and predict detailed changes in spatiotemporal patterns of hydrological fluxes and states due to land use change. The Wüstebach catchment within the TERENO (TERrestrial Environmental Observatories) network in Germany provides a unique monitoring setup to measure the major components of the water balance (evapotranspiration, discharge, precipitation) and the spatiotemporal distribution of soil moisture before and after a partial deforestation. Here, we present five years of measured hydrological data, including all major water budget components three years before and two years after a partial deforestation. A data-driven approach was used to understand changes and related feedback mechanisms in spatiotemporal hydrological response patterns. As expected from earlier studies, the partial deforestation caused a decrease in evapotranspiration and an increase in discharge. A closer look at the high resolution datasets revealed new insights in the intra-annual variability and relationship between the water balance components. The overall decrease in evapotranspiration caused a large increase in soil water storage in the deforested region, especially during the summer period, which in turn caused an increase in the frequency of high discharge in the same period. Although the evapotranspiration in the forested region was larger on average, the deforested region showed a higher evapotranspiration during part of the summer period. This could be related to wetter conditions in the deforested area, accompanied with the emergence of grass vegetation. At the same time, wetter soil moisture conditions in the deforested area increased the spatial variance of soil moisture in the summer and therewith altered the relationship between spatial mean and variance. Altogether, this study illustrates that detailed spatiotemporal monitoring can provide new insights into the hydrological effects of partial deforestation.
AB - Although the hydrological effects of land use change have been studied extensively, only few datasets are available to accurately describe, model, and predict detailed changes in spatiotemporal patterns of hydrological fluxes and states due to land use change. The Wüstebach catchment within the TERENO (TERrestrial Environmental Observatories) network in Germany provides a unique monitoring setup to measure the major components of the water balance (evapotranspiration, discharge, precipitation) and the spatiotemporal distribution of soil moisture before and after a partial deforestation. Here, we present five years of measured hydrological data, including all major water budget components three years before and two years after a partial deforestation. A data-driven approach was used to understand changes and related feedback mechanisms in spatiotemporal hydrological response patterns. As expected from earlier studies, the partial deforestation caused a decrease in evapotranspiration and an increase in discharge. A closer look at the high resolution datasets revealed new insights in the intra-annual variability and relationship between the water balance components. The overall decrease in evapotranspiration caused a large increase in soil water storage in the deforested region, especially during the summer period, which in turn caused an increase in the frequency of high discharge in the same period. Although the evapotranspiration in the forested region was larger on average, the deforested region showed a higher evapotranspiration during part of the summer period. This could be related to wetter conditions in the deforested area, accompanied with the emergence of grass vegetation. At the same time, wetter soil moisture conditions in the deforested area increased the spatial variance of soil moisture in the summer and therewith altered the relationship between spatial mean and variance. Altogether, this study illustrates that detailed spatiotemporal monitoring can provide new insights into the hydrological effects of partial deforestation.
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U2 - 10.1016/j.jhydrol.2016.09.037
DO - 10.1016/j.jhydrol.2016.09.037
M3 - Article
AN - SCOPUS:84994607923
SN - 0022-1694
VL - 542
SP - 648
EP - 661
JO - Journal of Hydrology
JF - Journal of Hydrology
ER -
