[1]LIU Qiang,CAI Xueya,LIU Junyi,et al.Variation Characteristics and Causes of Runoff-Sediment Relationship in Kuye River Basin in the Middle Reaches of the Yellow River[J].Research of Soil and Water Conservation,2022,29(04):68-74.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 04
Page number:
68-74
Column:
Public date:
2022-06-20
- Title:
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Variation Characteristics and Causes of Runoff-Sediment Relationship in Kuye River Basin in the Middle Reaches of the Yellow River
- Author(s):
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LIU Qiang1,2, CAI Xueya1, LIU Junyi1, WANG Jiao1, LI Kaiyi1, ZHANG Qianqian1, YU Feihong1, MU Xingmin2
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(1.College of Resources and Environmental Engineering, Tianshui Normal University, Tianshui, Gansu 741000, China; 2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China)
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- Keywords:
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runoff and sediment discharge changes; human activities; climate change; Kuye River Basin; middle reaches of the Yellow River
- CLC:
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P333
- DOI:
-
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- Abstract:
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In order to investigate the impact of human activities and climate change on the runoff and sediment regime in the Kuye River Basin, based on the monitoring data of precipitation, runoff and sediment transport in the Kuye River Basin from 1956 to 2019, cumulative anomaly method and double cumulative curve method were used to analyze the attribution of runoff and sediment change in the Kuye River Basin. The results show that the precipitation in the Kuye River Basin did not decrease significantly with time, but the runoff and sediment transport decreased significantly with time, and the decreasing factor of runoff and sediment was not the precipitation factor caused by climate change; the turning point years of runoff and sediment transport were yeas of 1979 and 1997; compared with baseline period A(1956—1979), climate change contributed 14.25% and 14.22% to runoff and sediment, and human activities contributed 85.75% and 85.78% to runoff and sediment, respectively in B period(1980—1997); in C period(1998—2019), climate change contributed 8.76% and 6.65% to runoff and sediment, respectively, and human activities contributed 91.24% and 93.35% to runoff and sediment, respectively. Precipitation change and human activities are the influencing factors of runoff and sediment reduction in the Kuye River Basin. The increasing human activity is the main factor to reduce runoff and sediment transport in the Kuye River Basin, while the decrease of precipitation caused by climate change is the secondary factor.