Quantifying the Relative Contributions of Forest Change and Climatic Variability to Hydrology in Large Watersheds: A Critical Review of Research Methods

Wei, Xiaohua; Liu, Wenfei; Zhou, Peicong

doi:10.3390/w5020728

Cited by 91 publications

(72 citation statements)

References 72 publications

(86 reference statements)

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“…For example, changes in urbanization or forest patterns could also have effects on the environment and the water resources [101,102]. In our study only the effects of single measures connected to nutrient sources and agricultural practices (which are currently considered in the planning of land/water management) on water quantity and quality were tested, also in combination with climate change.…”

Section: Discussionmentioning

confidence: 99%

Modeling Climate and Management Change Impacts on Water Quality and In-Stream Processes in the Elbe River Basin

Hesse

Krysanova

2016

Water

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Eco-hydrological water quality modeling for integrated water resources management of river basins should include all necessary landscape and in-stream nutrient processes as well as possible changes in boundary conditions and driving forces for nutrient behavior in watersheds. The study aims to assess possible impacts of the changing climate (ENSEMBLES climate scenarios) and/or land use conditions on resulting river water quantity and quality in the large-scale Elbe river basin by applying a semi-distributed watershed model of intermediate complexity (SWIM) with implemented in-stream nutrient (N+P) turnover and algal growth processes. The calibration and validation results revealed the ability of SWIM to satisfactorily simulate nutrient behavior at the watershed scale. Analysis of 19 climate scenarios for the whole Elbe river basin showed a projected increase in temperature (+3˝C) and precipitation (+57 mm) on average until the end of the century, causing diverse changes in river discharge (+20%), nutrient loads (NO 3 -N:´5%; NH 4 -N:24%; PO 4 -P: +5%), phytoplankton biomass (´4%) and dissolved oxygen concentration (´5%) in the watershed. In addition, some changes in land use and nutrient management were tested in order to reduce nutrient emissions to the river network.

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Section: Discussionmentioning

confidence: 99%

Modeling Climate and Management Change Impacts on Water Quality and In-Stream Processes in the Elbe River Basin

Hesse

Krysanova

2016

Water

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“…According to the same study, it is apparent from the Volta water balance that land use and land cover changes in the uplands of the basin play a pivotal role in determining the future of the basin water resources. (Wei et al, 2013) [6] argued that the relative hydrological effects of forest changes and climatic variability are largely dependent on the change magnitudes and watershed characteristics. In some extents, impacts on the watershed of forest changes or land use changes can be as important as those from climatic variability.…”

Section: Introductionmentioning

confidence: 99%

Land Use and Land Cover Changes under Climate Uncertainty: Modelling the Impacts on Hydropower Production in Western Africa

Obahoundje¹,

Ofosu

Akpoti³

et al. 2017

Hydrology

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Abstract:The Bui hydropower plant plays a vital role in the socio-economic development of Ghana. This paper attempt to explore the combined effects of climate-land use land cover change on power production using the (WEAP) model: Water Evaluation and Planning system. The historical analysis of rainfall and stream flow variability showed that the annual coefficient of variation of rainfall and stream flow are, respectively, 8.6% and 60.85%. The stream flow varied greatly than the rainfall, due to land use land cover changes (LULC). In fact, the LULC analysis revealed important changes in vegetative areas and water bodies. The WEAP model evaluation showed that combined effects of LULC and climate change reduce water availability for all of demand sectors, including hydropower generation at the Bui hydropower plant. However, it was projected that Bui power production will increase by 40.7% and 24.93%, respectively, under wet and adaptation conditions, and decrease by 46% and 2.5%, respectively, under dry and current conditions. The wet condition is defined as an increase in rainfall by 14%, the dry condition as the decrease in rainfall by 15%; current account is business as usual, and the adaptation is as the efficient use of water for the period 2012-2040.

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“…However, this approach usually ignores the physical processes of the hydrologic cycle in the basin. [24]. The paired catchment approach is often applicable to areas that are less than 100 km 2 because it is difficult to find two large, similar basins [25].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Impacts of Climate, Land Cover Change and Direct Human Activities on Runoff Variations in the Wei River Basin, China

Li¹,

Chang²,

Wang³

et al. 2016

Water

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Previous studies that quantified variations in runoff have mainly focused on the combined impacts of climate and human activities or climate and land cover change. Few have separated land cover change from human activities, which is critical for effective management of water resources. This study aims to investigate the impact of changing environmental conditions on runoff using the Soil and Water Assessment Tool (SWAT) model; we examined three categories: climate, land cover change and direct human activities. The study area was the Wei River Basin, a typical arid to semi-arid basin that was divided into five sub-zones (UZ, MZ, DZ, JZ and BZ). Our results showed the following: (1) the calibrated SWAT model produced satisfactory monthly flow processes over the baseline period from 1978 to 1986; (2) compared to the baseline period, the impact of climatic variations decreased and the impact of direct human activities increased from the 1990s to the 2000s, while the impact of land cover change was generally stable; and (3) climatic variations were the main cause of runoff declines over the entire basin during the 1990s and in the UZ, MZ and JZ areas during the 2000s, while direct human activities were most important in the DZ and BZ areas during the 2000s.

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Quantifying the Relative Contributions of Forest Change and Climatic Variability to Hydrology in Large Watersheds: A Critical Review of Research Methods

Cited by 91 publications

References 72 publications

Modeling Climate and Management Change Impacts on Water Quality and In-Stream Processes in the Elbe River Basin

Modeling Climate and Management Change Impacts on Water Quality and In-Stream Processes in the Elbe River Basin

Land Use and Land Cover Changes under Climate Uncertainty: Modelling the Impacts on Hydropower Production in Western Africa

Spatiotemporal Impacts of Climate, Land Cover Change and Direct Human Activities on Runoff Variations in the Wei River Basin, China

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