Dynamic sediment discharge in the Hekou–Longmen region of Yellow River and soil and water conservation implications

Gao, Peng; Deng, Jingcheng; Chai, Xueke; Mu, Xingmin; Zhao, Guangju; Shao, Hongbo; Sun, Wenyi

doi:10.1016/j.scitotenv.2016.06.128

Cited by 82 publications

(46 citation statements)

References 33 publications

(39 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The double‐mass curve (DMC) method is a very simple but widely used method for analysing the consistency between hydrological and climatic variables (Gao, Deng, et al, ; Gu et al, ). The DMC is composed of cumulative values of two parameters plotted against one another over a certain time span (Searcy & Hardison, ; Walling & Fang, ).…”

Section: Methodsmentioning

confidence: 99%

“…Hydrological models, water balance equations, and statistical analyses are usually employed to assess the contribution of climatic shifts and anthropogenic interventions to changes in river hydrological regimes (Zhao et al, ; Gao, Deng, et al, ). Many hydrological models are currently used, such as the soil and water assessment tool, the variable infiltration capacity model, the Water Erosion Prediction Project model, and the Xinanjiang model (Choi, Rasmussen, Moore, & Kim, ; Li et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…Although hydrological models have relatively explicit physical processes and accurate results, a large number of input data sets are required. Such extensive data requirements take considerable time and resources (Gao, Deng, et al, ). Moreover, much essential data is unavailable for many regions, especially for large areas.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Changes in run‐off and sediment load in the three parts of the Yellow River basin, in response to climate change and human activities

Gao

et al. 2018

Hydrological Processes

Self Cite

View full text Add to dashboard Cite

Hydrological regimes in the Yellow River have changed significantly because of climate change and intensive human interventions. These changes present severe challenges to water resource utilization and ecological development. Variation of run-off, suspended sediment load (SSL), and eight precipitation indices (P1: 0-12 mm·day −1 , P12: 12-25 mm·day −1 , P25: 25-50 mm·day −1 , P50: P ≥ 50 mm·day −1 and corresponding rainfall day: Pd1, Pd12, Pd25, Pd50 day year −1 ) in three critical parts of the Yellow River basin (source region: SRYRB, upper reaches: URYRB, middle reaches: MRYRB) were investigated for the period from 1960 to 2015. The results show that run-off and SSL significantly decreased (P < 0.01) in the URYRB and the MRYRB, whereas their decline in the SRYRB was insignificant (P > 0.05). Moreover, run-off in the URYRB had one change point in 1987, and SSL in the URYRB as well as run-off and SSL in the MRYRB had two change points (in the 1970s and the 1990s). Over the same period, only Pd1 and Pd12 in the SRYRB showed significant increasing trends, and an abrupt change appeared in 1981. The optimal precipitationindices for assessing the effects of precipitation on run-off and SSL in the URYRB and MRYRB were Pd50 and P12, respectively. A double-mass curve analysis showed that precipitation and human activities contributed to approximately 20% and 80% of the reduction in run-off, respectively, for both the SRYRB and the MRYRB. However, the contribution rate of precipitation and human activities on SSL reduction was approximately 40% and 60% in the URYRB and 5% and 95% in the MRYRB, respectively. Human activities, primarily soil and water conservation measures and water extraction (diversion), were the main factors (>50%) that reduced the run-off. However, the dominant driving factors for SSL reduction were soil and water conservation measures and reservoir interception, for which the contribution rate was higher than 70% in the MRYRB. This work strengthens the understanding of hydrological responses to precipitation change and provides a useful reference for regional water resource utilization.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Changes in run‐off and sediment load in the three parts of the Yellow River basin, in response to climate change and human activities

Gao

et al. 2018

Hydrological Processes

Self Cite

View full text Add to dashboard Cite

show abstract

“…The soil erosion intensity of sloped farmland is dozens of times that of forest land or grassland under the same conditions. After the conversion of cultivated land to grassland and forest land, the soil erosion intensity decreases by more than 90% [28,46,51]. From 1999 to 2011, the area of farmland being returned to forests on the Loess Plateau totaled 7.52 million hm 2 , were mainly distributed in the central part of the Loess Plateau, and strong erosion was effectively curbed [52].…”

Section: Soil Erosionmentioning

confidence: 99%

Vegetation Restoration and Its Environmental Effects on the Loess Plateau

Zhao

Wang

et al. 2018

Sustainability

View full text Add to dashboard Cite

An analysis of land use/cover change (LUCC) on the Loess Plateau over the past 30 years and its environmental effects was performed to provide scientific guidance for a sustainable development policy for the regional ecological environment and social economy. Geostatistical and trend analyses are used to study the LUCC characteristics, driving forces and environmental effects, and the relationship between LUCC and regional sustainable development is explored. The following results were obtained: (1) Overall, the land use structure has not changed, with grassland, farmland, and forest land remaining dominant; however, the vegetation coverage has significantly increased, especially in the central area.(2) LUCC is affected by climate change and human activities, with greater climate change impacts in the northwest than the southeast and greater among which human-induced impacts on the hilly/gully region in the central part. (3) LUCC will produce long-term ecological and environmental processes, such as surface runoff, soil erosion, soil moisture and carbon cycling. Vegetation restoration has both negative and positive effects on the regional ecological environment. Vegetation productivity on the Loess Plateau has approached the water resource carrying capacity threshold. Therefore, improving artificial vegetation stability and promoting the water resources balance have become the main strategies for promoting sustainable development on the Loess Plateau.

show abstract

“…Many studies have shown that the changes in water and sediment discharges were mainly resulted from anthropogenic activities and climate change (Dai et al, ; Dai et al, ; Hu, Wang, Yang, & Sun, ; Jiang et al, ; Mei, Dai, Du, & Chen, ; Peng, Chen, & Dong, ). The dynamics of streamflow and sediment yields were investigated at different spatial and temporal scales in a number of studies (Gao et al, ; Song et al, ). In addition, a few studies have attempted to quantify the driving forces of water and sediment discharge.…”

Section: Introductionmentioning

confidence: 99%

Climatic and anthropogenic impacts on water and sediment generation in the middle reach of the Jinsha River Basin

Zhang

Cai

Yang

et al. 2020

River Research & Apps

View full text Add to dashboard Cite

Response of water and sediment generation to climate change and anthropogenic activities is becoming a hot topic in the middle reach of the Jinsha River Basin. In this research, coefficients of variation and concentration degree (i.e., Cv and Cd) and double mass curve (DDC) were adopted to examine the changes in water and sediment discharge and their relationships with precipitation. The contribution rates of climatic and anthropogenic factors to water and sediment discharge were assessed through comparisons between the measured and predicted values in the baseline and postbaseline periods in the basin. The main results were: (a) the water and sediment discharges of the basin showed a decreasing trend from 2006 to 2014, with peak points of Cv and Cd of sediment discharge of the basin in 2009 and 2010, respectively; (b) the precipitation had a major influence on water discharge variations, and the peak point of the DDC of the cumulative precipitation and sediment discharge was consistent with the cumulative water and sediment discharge; and (c) under annual and flooding season scales, the contribution rates of anthropogenic factors to water discharge were 63.060% and 70.457%, respectively. The contribution rates of anthropogenic factors on sediment discharge were 84.790% and 85.541%, respectively. The impacts of anthropogenic factors on water and sediment discharge were more significant than the impacts of precipitation, in which the construction and operation of cascade hydropower stations (CHS) were believed to play a crucial role.

show abstract

Dynamic sediment discharge in the Hekou–Longmen region of Yellow River and soil and water conservation implications

Cited by 82 publications

References 33 publications

Changes in run‐off and sediment load in the three parts of the Yellow River basin, in response to climate change and human activities

Changes in run‐off and sediment load in the three parts of the Yellow River basin, in response to climate change and human activities

Vegetation Restoration and Its Environmental Effects on the Loess Plateau

Climatic and anthropogenic impacts on water and sediment generation in the middle reach of the Jinsha River Basin

Contact Info

Product

Resources

About