Impacts of climate change and human activities on runoff in Weihe Basin based on Budyko hypothesis

Wu, Heng; Liu, D F; Chang, Jianxia; Zhang, H X; Huang, Qiang

doi:10.1088/1755-1315/82/1/012063

Cited by 9 publications

(6 citation statements)

References 7 publications

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“…The third category included parameter variations or statistical analyses. For example, Jiang et al [13], Jingjing et al [14], and Wu et al [15] adopted the Budyko-type equations of conceptual models to analyze the runoff changes in WRB from perspectives of the model parameters, climate change, and human activity, respectively. In another related study, based on a water balance principle, Zhao et al [16] used the elastic coefficient and cumulative slope methods to analyze the factors contributing to the runoff changes in the WRB.…”

Section: Introductionmentioning

confidence: 99%

The Runoff Evolution and the Differences Analysis of the Causes of Runoff Change in Different Regions: A Case of the Weihe River Basin, Northern China

Yang

Wang

2019

Sustainability

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The runoff levels of the major hydrological stations in the Weihe river basin (WRB) have been found to present decreasing trends. However, the conspicuous spatial differences in the hydro-meteorological conditions have led to variations in the rainfall–runoff pattern in each of the sub-basin areas. The aims of this research study were to reveal the main factors contributing to the runoff changes in the different regions—and it has significance in the water resources rational allocation and protection in the different regions. Three statistical methods were used to analyze the law of precipitation and runoffs of five hydrological stations. The SWAT (Soil and Water Assessment Tool) model was used to reconstruct the runoff in the impact period. The effects of climate change and human activity on runoff were separated by comparing measured runoff and reconstructed runoff. The results show that the closer the proximity to the downstream hydrological station, the more the runoff decreased. In the tributaries and upstream hydrological stations (Zhuanhtou (ZT), Zhangjiashan (ZJS), and Linjiacun (LJC)), from 1970 to 2016, the dominant factor of the runoff reduction was determined to be climate change, and accounted for 148.2%, 98.9%, and 90.5%, respectively. In the hydrological stations of middle and lower reaches (Xianyang (XY) and Huaxian (HX)), the contributions of the climate change to the runoff reduction were 49.7% and 44.3%, respectively, and the impacts of human activity accounted for 50.3% and 55.7%. The impacts of human activity on the runoff reduction were slightly greater than that of the climate change. Due to the different leading factors affecting runoff change in the basin, in response to future climate change, for tributaries and upstream areas, land use should be rationally planned to achieve the optimal balance of water volume in each part of the basin, which is of great significance to the protection and utilization of water resources. As for the middle and downstream regions, reasonable planning should also be focused on the amount of water withdraw, water resource allocations, and water conservancy project construction. According to the factors affecting runoff, corresponding strategies are proposed for different regions, which have important research significance for the protection and sustainable development of watershed water resources.

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Section: Introductionmentioning

confidence: 99%

The Runoff Evolution and the Differences Analysis of the Causes of Runoff Change in Different Regions: A Case of the Weihe River Basin, Northern China

Yang

Wang

2019

Sustainability

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“…Sensitivities of runoff and streamflow to precipitation and potential evapotranspiration follow immediately once the similarity function has been specified (Arora, 2002;Dooge, 1992;Roderick & Farquhar, 2011) and absence of long-term storage change is assumed. This framework has been used to estimate within-basin sensitivities of streamflow to temporal changes in the two assumed driving climatic variables (precipitation and potential evapotranspiration) and to land-cover change (e.g., Mwangi et al, 2016;Tan & Gan, 2015;Wu et al, 2017;Yang & Liu, 2011).…”

Section: Introductionmentioning

confidence: 99%

On the Sensitivity of Annual Streamflow to Air Temperature

Milly

Kam

Dunne

2018

Water Resources Research

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Although interannual streamflow variability is primarily a result of precipitation variability, temperature also plays a role. The relative weakness of the temperature effect at the annual time scale hinders understanding, but may belie substantial importance on climatic time scales. Here we develop and evaluate a simple theory relating variations of streamflow and evapotranspiration (E) to those of precipitation (P) and temperature. The theory is based on extensions of the Budyko water‐balance hypothesis, the Priestley‐Taylor theory for potential evapotranspiration ( Ep), and a linear model of interannual basin storage. The theory implies that the temperature affects streamflow by modifying evapotranspiration through a Clausius‐Clapeyron‐like relation and through the sensitivity of net radiation to temperature. We apply and test (1) a previously introduced “strong” extension of the Budyko hypothesis, which requires that the function linking temporal variations of the evapotranspiration ratio (E/P) and the index of dryness ( Ep/P) at an annual time scale is identical to that linking interbasin variations of the corresponding long‐term means, and (2) a “weak” extension, which requires only that the annual evapotranspiration ratio depends uniquely on the annual index of dryness, and that the form of that dependence need not be known a priori nor be identical across basins. In application of the weak extension, the readily observed sensitivity of streamflow to precipitation contains crucial information about the sensitivity to potential evapotranspiration and, thence, to temperature. Implementation of the strong extension is problematic, whereas the weak extension appears to capture essential controls of the temperature effect efficiently.

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“…e main driving force of this problem is also an intense socioeconomic activity occurring in the study basin where most of the land is converted into farmland and the basin water is highly extracted for irrigation purposes [39][40][41][42]. As a result, the temporal distribution of precipitation and temperature can produce Advances in Meteorology noticeable effects on the streamflow across the upper Huai river basin, and these kinds of variation are of particular interest for flood planners, water manager's soil erosion prevention, and water availability assessment in natural ecosystems.…”

Section: Discussionmentioning

confidence: 99%

Trends of Hydroclimate Variables in the Upper Huai River Basin: Implications of Managing Water Resource for Climate Change Mitigation

Girma

Yan

Wang

et al. 2020

Advances in Meteorology

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The present study attempted to investigate the trends of mean annual temperature, precipitation, and streamflow changes to determine their relationships in the upper Huai river basin. The Mann–Kendall (MK), Sen’s slope test estimator, and innovative trend detection (ф) (ITA) methods were used to detect the trends. According to the findings, average annual precipitation shows a descending trend (ф = −0.17) in most stations. An increasing trend was found only in Fuyang station (ф = 1.02). In all stations, the trends of mean annual temperature (ф = 0.36) were abruptly increased. During the past 57 years, the mean air temperature has considerably increased by 12°C/10a. The river streamflow showed a dramatic declining trend in all stations for the duration of the study period (1960–2016) (ф = −4.29). The climate variability in the study region affects the quantity of the streamflow. The river streamflow exhibits decreasing trends from 1965 onwards. The main possible reason for the declining stream flow in the study area is the declining amount of precipitation on some specific months due to the occurrence of climate change. The outcomes of this study could create awareness for the policymakers and members of the scientific community, informing them about the hydroclimatic evolutions across the study basin, and become an inordinate resource for advanced scientific research.

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Impacts of climate change and human activities on runoff in Weihe Basin based on Budyko hypothesis

Cited by 9 publications

References 7 publications

The Runoff Evolution and the Differences Analysis of the Causes of Runoff Change in Different Regions: A Case of the Weihe River Basin, Northern China

The Runoff Evolution and the Differences Analysis of the Causes of Runoff Change in Different Regions: A Case of the Weihe River Basin, Northern China

On the Sensitivity of Annual Streamflow to Air Temperature

Trends of Hydroclimate Variables in the Upper Huai River Basin: Implications of Managing Water Resource for Climate Change Mitigation

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