A distributed scheme developed for eco-hydrological modeling in the upper Heihe River

Yang, Dawen; Gao, Bing; Jiao, Yang; Lei, Huimin; Zhang, Yanlin; Yang, Hanbo; Cong, Zhen

doi:10.1007/s11430-014-5029-7

Cited by 104 publications

(78 citation statements)

References 20 publications

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“…However, the spatio-temporal characteristics of the long-term changes in frozen soils are not sufficiently clear. Based on comprehensive field experiments (Cheng et al, 2014), a hydrological model coupling cryospheric processes and hydrological processes has been developed (Yang et al, 2015;Gao et al, 2016). This model provides a basis upon which to analyze the spatio-temporal changes in frozen soils and their impacts on the regional hydrology in the upper Heihe basin, northeastern QTP.…”

Section: Introductionmentioning

confidence: 99%

“…This study used the distributed Geomorphology-Based Ecohydrological Model (GBEHM), which was developed by Yang et al (2015) and Gao et al (2016). The GBEHM is a spatially distributed model for large-scale river basins.…”

Section: Brief Introduction Of the Hydrological Modelmentioning

confidence: 99%

“…To capture the sub-grid topography, each 1 km grid was represented by a number of hillslopes with an average length and gradient, but different aspect, which were estimated from the 90 m digital elevation models (DEM). Additional hillslope properties include soil and vegetation types (Yang et al, 2015).…”

Section: Brief Introduction Of the Hydrological Modelmentioning

confidence: 99%

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Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai–Tibetan Plateau

et al. 2018

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Abstract. Frozen ground has an important role in regional hydrological cycles and ecosystems, particularly on the Qinghai-Tibetan Plateau (QTP), which is characterized by high elevations and a dry climate. This study modified a distributed, physically based hydrological model and applied it to simulate long-term changes in frozen ground its the effects on hydrology in the upper Heihe basin, northeastern QTP. The model was validated against data obtained from multiple ground-based observations. Based on model simulations, we analyzed spatiotemporal changes in frozen soils and their effects on hydrology. Our results show that the area with permafrost shrank by 8.8 % (approximately 500 km 2 ), predominantly in areas with elevations between 3500 and 3900 m. The maximum depth of seasonally frozen ground decreased at a rate of approximately 0.032 m decade −1 , and the active layer thickness over the permafrost increased by approximately 0.043 m decade −1 . Runoff increased significantly during the cold season (November-March) due to an increase in liquid soil moisture caused by rising soil temperatures. Areas in which permafrost changed into seasonally frozen ground at high elevations showed especially large increases in runoff. Annual runoff increased due to increased precipitation, the base flow increased due to changes in frozen soils, and the actual evapotranspiration increased significantly due to increased precipitation and soil warming. The groundwater storage showed an increasing trend, indicating that a reduction in permafrost extent enhanced the groundwater recharge.

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Section: Introductionmentioning

confidence: 99%

Section: Brief Introduction Of the Hydrological Modelmentioning

confidence: 99%

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Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai–Tibetan Plateau

et al. 2018

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“…Yang et al (2015) introduced their distributed scheme developed for ecohydrological modeling in the upstream areas of the HRB. Yao et al (2015) established a numerical model of regional groundwater flow in the mid-and downstream areas of the HRB in which the oases and vegetation along the Heihe river corridor are highly dependent on groundwater.…”

Section: Watershed Science: Bridging New Advances In Hydrological Scimentioning

confidence: 99%

Watershed science: Bridging new advances in hydrological science with good management of river basins

Zhang

2015

Sci. China Earth Sci.

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Watershed science: Bridging new advances in hydrological science with good management of river basinsWatershed science traditionally refers to the themes of hydrology and water resource management. Watershed science has been experiencing a rapid evolution that thrives on a forceful superimposition of multi-discipline and innovative earth observing and information techniques. The water and its interactions with other systems in a watershed is increasingly becoming a focus in scientific communities, and several new disciplines such as ecohydrology, ecoeconomics, environmental hydrogeology and hydroinformatics have emerged in recent years. From a water-soil-air-plant-human perspective, an integrated study should be implemented regarding a basin in its totality; this new science is called watershed science (Cheng et al., 2014).This Special Topic on SCIENCE CHINA Earth Sciences provides a forum to discuss watershed science. Seven papers that are contributed from leading scientists working in the forefront of watershed science are presented. These scientists are from China, the USA, Japan, the United Kingdom and Germany. Although the number of the papers is relatively small, these papers cover the main fields and foundations of watershed science. To an extent, the special issue represents the epitome of watershed science.Integrated modeling is always at the core of watershed science. This method synthesizes formal knowledge regarding our understanding of complex watershed processes. In this special issue, we are pleased to have Professor Keith Beven, one of the most influential hydrologists contribute his new results on hyper-resolution hydrological modeling (Beven et al., 2015). The earth system model, with resolution less than 1 km, can be called the hyperresolution model. However, Beven and his colleagues argue that the hyperresolution model not only means the finer grids in the model, but also means finer and more reliable parameterizations to improve the accuracy and sensitivity of the model. Otherwise, the model will be lost in hyperresolution ignorance.Two modeling works in the Heihe River Basin (HRB), well known as a representative arid region inland river basins in China (Cheng et al., 2014), are also published in this special issue. Yang et al. (2015) introduced their distributed scheme developed for ecohydrological modeling in the upstream areas of the HRB. Yao et al. (2015) established a numerical model of regional groundwater flow in the mid-and downstream areas of the HRB in which the oases and vegetation along the Heihe river corridor are highly dependent on groundwater.The improvements of observational technologies and infrastructure for observing hydrological and ecological processes at the watershed scale reflect another aspect of the progress in watershed science. DeBeer et al. (2015) introduced the Changing Cold Regions Network (CCRN). The CCRN is a Canadian research consortium dedicated to understanding, diagnosing and predicting interactions amongst the cryospheric, ecological, hydrological, and ...

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“…However, the application prerequisite of the distributed hydrological model is to successfully obtain a large number of parameters (such as temperature, precipitation, evapotranspiration, topography, land use, soil moisture, and vegetation coverage) at each grid cell (Yang et al, 2015). But for a large river basin with sparse meteorological and hydrological sites as well as lacking of observed data, it is difficult to obtain the large number of parameters mentioned above at each grid cell.…”

Section: Introductionmentioning

confidence: 99%

A hybrid model to simulate the annual runoff of the Kaidu River in northwest China

Chen

Bai

et al. 2016

Hydrol. Earth Syst. Sci.

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Abstract. Fluctuant and complicated hydrological processes can result in the uncertainty of runoff forecasting. Thus, it is necessary to apply the multi-method integrated modeling approaches to simulate runoff. Integrating the ensemble empirical mode decomposition (EEMD), the back-propagation artificial neural network (BPANN) and the nonlinear regression equation, we put forward a hybrid model to simulate the annual runoff (AR) of the Kaidu River in northwest China. We also validate the simulated effects by using the coefficient of determination (R 2 ) and the Akaike information criterion (AIC) based on the observed data from 1960 to 2012 at the Dashankou hydrological station. The average absolute and relative errors show the high simulation accuracy of the hybrid model. R 2 and AIC both illustrate that the hybrid model has a much better performance than the single BPANN. The hybrid model and integrated approach elicited by this study can be applied to simulate the annual runoff of similar rivers in northwest China.

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A distributed scheme developed for eco-hydrological modeling in the upper Heihe River

Cited by 104 publications

References 20 publications

Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai–Tibetan Plateau

Change in frozen soils and its effect on regional hydrology, upper Heihe basin, northeastern Qinghai–Tibetan Plateau

Watershed science: Bridging new advances in hydrological science with good management of river basins

A hybrid model to simulate the annual runoff of the Kaidu River in northwest China

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