Print Email Facebook Twitter Quantitative assessment of groundwater and Surface water interactions in the Hailiutu river basin, Erdos plateau, China Title Quantitative assessment of groundwater and Surface water interactions in the Hailiutu river basin, Erdos plateau, China Author Yang, Z. (TU Delft Water Resources) Contributor Uhlenbrook, S. (promotor) Zhou, Y. (promotor) Degree granting institution Delft University of Technology Date 2018-03-26 Abstract This study presents a multi-disciplinary approach for investigating the interactions between groundwater and surface water in the semi-arid Hailiutu catchment in the Erdos Plateau, Northwest China. The study consists of statistical detection of river flow regime shifts at the basin level; multiple in-situ measurements for quantifying groundwater discharges using hydraulic, hydrochemical and temperature methods at a local scale; analysis and simulation of impacts of different land use scenarios on groundwater and surface water interactions at the subcatchment scale; and the quantification of temporal and spatial groundwater and surface water interactions with hydrochemical tracers and modelling methods at the basin scale. The study found that the river flow consists of mainly groundwater discharges at all scales. The river flow regime has been intensively altered by human activities, such as the construction of reservoirs, water diversion, groundwater exploitation, and reforestation. Water use by plants and crops consumes majority of the precipitation. Groundwater sustains vegetation growth and feeds river discharges. The water resources and ecosystem management priority should reduce evaporative water uses by promoting dry resistant plant species for vegetating sand dunes and lower irrigation demand crops for socio-economic development. Furthermore, the Hailiutu River catchment must manage the groundwater recharge for water resource conservation and the maintenance of healthy ecosystems To reference this document use: http://resolver.tudelft.nl/uuid:fa4e2a36-aaea-40fe-bedb-e443486f8d04 Publisher CRC Press / Balkema - Taylor & Francis Group ISBN 978-1-138-59687-0 Bibliographical note Dissertation submitted in fulfillment of the requirements of the Board for Doctorates of Delft University of Technology and of the Academic Board of the UNESCO-IHE Institute for Water Education. Part of collection Institutional Repository Document type doctoral thesis Rights © 2018 Z. Yang Files PDF 2018_IHE_PHD_THESIS_YANG_i.pdf 12.63 MB Close viewer /islandora/object/uuid:fa4e2a36-aaea-40fe-bedb-e443486f8d04/datastream/OBJ/view