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[1]NING Zhen,GAO Guangyao,FU Bojie.Characteristics and Attribution Analysis of Sediment Yield Changes in Helong Region of the Yellow River[J].Research of Soil and Water Conservation,2022,29(03):38-42.

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Characteristics and Attribution Analysis of Sediment Yield Changes in Helong Region of the Yellow River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 03 Page number: 38-42 Column: Public date: 2022-04-20

Title:: Characteristics and Attribution Analysis of Sediment Yield Changes in Helong Region of the Yellow River

Author(s):: NING Zhen^1,2, GAO Guangyao^1,2, FU Bojie^1,2; (1.State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; 2.University of Chinese Academy of Sciences, Beijing 100049, China)

Keywords:: Helong region; specific sediment yield; precipitation change; attribution analysis

CLC:: S157.1

DOI:: -

Abstract:: Sediment discharge of the Yellow River has changed rapidly in recent years. It is of great significance to identify the causes of the variation of sediment discharge in the Yellow River for the formulation of watershed management strategies. Hekouzhen-Longmen region(Helong region)in the middle reaches of the Yellow River is the main source area of sediment yield. Based on the sediment yield and precipitation data of 15 basins in the Helong region during 1961—2017, we analyzed the variation trend and abrupt change time of specific sediment yield during the study period, and quantitatively identified the contribution rates of climate change and human activities to sediment transport reduction. The results show that the specific sediment yield of the 15 basins in the study area presented a significant downward trend, and the abrupt change time concentrated in the 1980s and 1990s. The decrease of precipitation and the increase of soil and water conservation measures led to the decrease of specific sediment yield. Human activities in most basins are the main factor leading to the decrease of specific sediment yield. The sharp increase of soil and water conservation measures after the 1980s had effectively slowed down the sediment yield. This study attempts to provide decision-making support for ecological restoration and water and sediment regulation in the Yellow River basin.

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Last Update: 2022-04-20