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Spatiotemporal Variation of Annual Runoff and Sediment Load in the Pearl River during 1953–2017

Author

Listed:
  • Huanyang Zhou

    (School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China)

  • Zhaoli Wang

    (School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China)

  • Xushu Wu

    (School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China)

  • Yuhong Chen

    (School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China)

  • Yixuan Zhong

    (China Water Resources Pearl River Planning Surveying & Designing Co., LTD., Guangzhou 510640, China)

  • Zejun Li

    (Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510640, China)

  • Jiachao Chen

    (School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China)

  • Jun Li

    (School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China)

  • Shenglian Guo

    (State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China)

  • Xiaohong Chen

    (Center for Water Resource and Environment, Sun Yat-Sen University, Guangzhou 510275, China)

Abstract

Anthropogenic activities have had a great impact on the characteristics of runoff and sediment load along the Pearl River in China in recent decades. We investigated the spatiotemporal variations, including the trends, abrupt changes, and periodicities of annual runoff and sediment load in the Pearl River by using the datasets from nine hydrological stations for the period of 1953–2017. We found that annual runoff was stable during the study period, with only two stations in the upper reach showing decreasing trends. Annual sediment load has generally experienced a significant decreasing trend, while one of the stations in the middle reach showed an opposite trend due to severe rocky desertification and soil erosion in the local karst terrain. Abrupt changes in sediment load were mainly between the 1990s and 2000s, when many hydraulic projects were conducted, implying the significant impact of anthropogenic activities on river sediment load. Results also indicate 2–4 year and 4–8 year periodicities in both annual runoff and sediment load, with long periodicities less significant than the short ones. Our study is conducive to water and soil resource management in the Pearl River basin, whilst provides a guide for other basins, particularly those characterized by karst terrains where local desertification and soil erosion might likewise cause increase in river sediment load.

Suggested Citation

  • Huanyang Zhou & Zhaoli Wang & Xushu Wu & Yuhong Chen & Yixuan Zhong & Zejun Li & Jiachao Chen & Jun Li & Shenglian Guo & Xiaohong Chen, 2019. "Spatiotemporal Variation of Annual Runoff and Sediment Load in the Pearl River during 1953–2017," Sustainability, MDPI, vol. 11(18), pages 1-20, September.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:18:p:5007-:d:266847
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    References listed on IDEAS

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    3. Na Li & Lachun Wang & Chunfen Zeng & Dong Wang & Dengfeng Liu & Xutong Wu, 2016. "Variations of Runoff and Sediment Load in the Middle and Lower Reaches of the Yangtze River, China (1950-2013)," PLOS ONE, Public Library of Science, vol. 11(8), pages 1-18, August.
    4. Chi Chen & Taejin Park & Xuhui Wang & Shilong Piao & Baodong Xu & Rajiv K. Chaturvedi & Richard Fuchs & Victor Brovkin & Philippe Ciais & Rasmus Fensholt & Hans Tømmervik & Govindasamy Bala & Zaichun , 2019. "China and India lead in greening of the world through land-use management," Nature Sustainability, Nature, vol. 2(2), pages 122-129, February.
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    Cited by:

    1. Ruiya Song & Xiufeng Zhao & Yongcai Jing & Xiaoxia Li & Jiwen Su & Xiao Wang & Dandan Zhao, 2022. "Analysis of Ecosystem Protection and Sustainable Development Strategies—Evidence Based on the RWEQ Model on the Loess Plateau, China," Sustainability, MDPI, vol. 14(18), pages 1-13, September.

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