Impact of land-cover and climate changes on runoff of the source regions of the Yellow River

Dao-feng, LI; Tian, Ying; Liu, Changming; Hao, Fang

doi:10.1007/bf02837414

Cited by 27 publications

(13 citation statements)

References 2 publications

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“…Approximately 49% of the total water volume of the Yellow River, 15% of the Lancang River, and a considerable amount of the Yangtze River volume come from the Three-River Source Region. The area also has important influence on ecological security and economic development in China [13], and its unique geographic environments and climatic conditions play significant roles in the climate change of China, East 2 Advances in Meteorology Asia, and the world [14,15]. Initially, the research region has focused on the source of the Yellow River.…”

Section: Introductionmentioning

confidence: 99%

Terrestrial Water Storage Changes of Permafrost in the Three-River Source Region of the Tibetan Plateau, China

Kang

Zhao

et al. 2016

Advances in Meteorology

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Changes in permafrost influence water balance exchanges in watersheds of cryosphere. Water storage change (WSC) is an important factor in water cycle. We used Gravity Recovery and Climate Experiment (GRACE) satellite data to retrieve WSC in the Three-River Source Region and subregions. WSC in four types of permafrost (continuous, seasonal, island, and patchy permafrost) was analyzed during 2003–2010. The result showed that WSC had significant change; it increased by9.06±0.01 mm/a (21.89±0.02×109 m3) over the Three-River Source Region during the study period. The most significant changes of WSC were in continuous permafrost zone, with a total amount of about13.94±0.48×109 m3. The spatial distribution of WSC was in state of gain in the continuous permafrost zone, whereas it was in a state of loss in the other permafrost zones. Little changes of precipitation and runoff occurred in study area, but the WSC increased significantly, according to water balance equation, the changes of runoff and water storage were subtracted from changes of precipitation, and the result showed that changes of evaporation is minus which means the evaporation decreased in the Three-River Source Region during 2003–2010.

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Section: Introductionmentioning

confidence: 99%

Terrestrial Water Storage Changes of Permafrost in the Three-River Source Region of the Tibetan Plateau, China

Kang

Zhao

et al. 2016

Advances in Meteorology

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“…An emerging trend in this overall subset of SWAT literature is the application of the model for combined climate change and land use change impacts (Krysanova and White, 2015;Gassman et al, 2014); over 70 combined impact studies have now been documented (CARD, 2016). Such studies first were reported for Chinese conditions (Li et al, 2004), which now include applications focused on capturing the ef-fects of historical land use change due to the influence of Chinese government programs (Zuo et al, 2016;G. H. Liu et al, 2015;W.…”

Section: Introductionmentioning

confidence: 99%

Assessment of impacts of agricultural and climate change scenarios on watershed water quantity and quality, and crop production

Dagnew¹,

Gassman²,

Schoof³

et al. 2016

Preprint

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Abstract. Modeling impacts of agricultural scenarios and climate change on surface water quantity and quality provides useful information for planning effective water, environmental, and land use policies. Despite the significant impacts of agriculture on water quantity and quality, limited literature exists that describes the combined impacts of agricultural land use change and climate change on future bioenergy crop yields and watershed hydrology. In this study, the Soil and Water Assessment Tool (SWAT) eco-hydrological model was used to model the combined impacts of five agricultural land use change scenarios and three downscaled climate pathways (representative concentration pathways, RCPs) that were created from an ensemble of eight atmosphere-ocean general circulation models (AOGCMs). These scenarios were implemented in a well calibrated SWAT model for the Raccoon River watershed (RRW) located in western Iowa. The scenarios were executed for the historical baseline, early-century, mid-century, and late-century periods. The results indicate that historical and more corn intensive agricultural scenarios with higher CO2 emissions consistently result in more water in the streams and greater water quality problems, especially late in the 21st century. Planting more switchgrass, on the other hand, results in less water in the streams and water quality improvements relative to the baseline. For all given agricultural landscapes simulated, all flow, sediment and nutrient outputs increase from early-to-late century periods for the RCP4.5 and RCP8.5 climate scenarios. We also find that corn and switchgrass yields are negatively impacted under RCP4.5 and RCP8.5 scenarios in the mid and late 21st century.

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“…The semi-distributed model SWAT (Soil And Water Assessment Tool) (Neitsch et al 2009) was developed to predict the impacts of human activities (Gassman et al 2007) and climate change (Dile et al 2013) on environment and water resources in large complex watersheds. Lumped models consider the entire watershed/basin as a single system (Devi et al 2015), on the other hand, the semi-distributed models like the SWAT model divide the whole watershed/basin into smaller sub-watersheds/ sub-basins (Daofeng et al 2004;. It is assumed that each sub-basin is a homogeneous unit with representative parameters for the entire sub-basin (Bingner et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Quantifying the effects of watershed subdivision scale and spatial density of weather inputs on hydrological simulations in a Norwegian Arctic watershed

Bui

Nie

2021

Journal of Water and Climate Change

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The effects of watershed subdivisions on hydrological simulations have not been evaluated in the Arctic conditions yet. This study applied the Soil and Water Assessment Tool and the threshold drainage area (TDA) technique to evaluate the impacts of watershed subdivision on hydrological simulations at a 5,913-km2 Arctic watershed, Målselv. The watershed was discretized according to four TDA scheme scales including 200, 2,000, 5,000, and 10,000 ha. The impacts of different TDA schemes on hydrological simulations in water balance components, snowmelt runoff, and streamflow were investigated. The study revealed that the complexity of terrain and topographic attributes altered significantly in the coarse discretizations: (1) total stream length (−47.2 to −74.6%); (2) average stream slope (−68 to −83%); and (3) drainage density (−24.2 to −51.5%). The spatial density of weather grid integration reduced from −5 to −33.33% in the coarse schemes. The annual mean potential evapotranspiration, evapotranspiration, and lateral flow slightly decreased, while areal rainfall, surface runoff, and water yield slightly increased with the increases of TDAs. It was concluded that the fine TDAs produced finer and higher ranges of snowmelt runoff volume across the watershed. All TDAs had similar capacities to replicate the observed tendency of monthly mean streamflow hydrograph, except overestimated/underestimated peak flows. Spatial variation of streamflow was well analyzed in the fine schemes with high density of stream networks, while the coarse schemes simplified this. Watershed subdivisions affected model performances, in the way of decreasing the accuracy of monthly streamflow simulation, at 60% of investigated hydro-gauging stations (3/5 stations) and in the upstream. Furthermore, watershed subdivisions strongly affected the calibration process regarding the changes in sensitivity ranking of 18 calibrated model parameters and time it took to calibrate.

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Impact of land-cover and climate changes on runoff of the source regions of the Yellow River

Cited by 27 publications

References 2 publications

Terrestrial Water Storage Changes of Permafrost in the Three-River Source Region of the Tibetan Plateau, China

Terrestrial Water Storage Changes of Permafrost in the Three-River Source Region of the Tibetan Plateau, China

Assessment of impacts of agricultural and climate change scenarios on watershed water quantity and quality, and crop production

Quantifying the effects of watershed subdivision scale and spatial density of weather inputs on hydrological simulations in a Norwegian Arctic watershed

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