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[1]LI Lianxiu,GU Zhanfei,LI Yulong,et al.Variation of Low Water Level and Its Influencing Factors in the West and North River Delta[J].Research of Soil and Water Conservation,2022,29(03):404-410.

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Variation of Low Water Level and Its Influencing Factors in the West and North River Delta

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 03 Page number: 404-410 Column: Public date: 2022-04-20

Title:: Variation of Low Water Level and Its Influencing Factors in the West and North River Delta

Author(s):: LI Lianxiu¹, GU Zhanfei¹, LI Yulong², ZHAO Dong³; (1.School of Civil engineering, Zhengzhou University of Aeronautics, Zhengzhou 450000, China; 2.State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China; 3.Sichuan Academy of Environmental Sciences, Chengdu 610041, China)

Keywords:: West and North River Delta; low water level; precipitation; human activities

CLC:: TV143

DOI:: -

Abstract:: The variation of low water level in river deltas is controlled by climate factors and human activities, and it is of great significance for channel navigation and water intake. In order to investigate the evolution of low water level and its influencing factors in the West and North River Delta, based on the annual lowest water level data of the Makou and Sanshui stations during the 1972—2017, and the data of riverbed topography, precipitation, runoff and sea level of these two stations, the evolution trend of annual lowest water level was identified and the effects of influencing factors on the process of its evolution were discussed. The results show that the evolution process of the annual lowest water level of the Makou and Sanshui stations can be divided into the fluctuation period(1972—1990), the significant decrease period(1991—2003)and the recovery period(2004—2017). From 1972 to 1990, the lowest water level fluctuated around -0.11 m under the control of precipitation. Between 1991 and 2003, the lowest water level dropped to below -0.50 m due to the severe riverbed downcutting. During 2004—2017, the lowest water level slightly rose under the combined influence of multiple factors, such as the regulating effect of soil-water conservation and reservoir on runoff in dry season. In recent years, the influence of human activities on the low water level in the West and North River Delta has gradually surpassed the climatic factors and become the dominant factor of the evolution of low water level.

References:: [1] 陆永军,季荣耀,王志力,等.珠江三角洲网河区低水位时空变化规律[J].水科学进展,2019,30(6):800-809.
[2] 陈进,黄薇.湘江近年枯季低水位的原因及解决对策[J].长江科学院院报,2010,27(10):1-4.
[3] Naik P K, Jay D A. Distinguishing human and climate influences on the Columbia River:Changes in mean flow and sediment transport[J]. Journal of Hydrology, 2011,404(3/4):259-277.
[4] 郑国栋,顾立忠,李虎成,等.珠江三角洲河道地貌变化对网河水情影响研究[J].中国农村水利水电,2010(7):33-36.
[5] 蒋陈娟,杨清书,戴志军,等.近几十年来珠江三角洲网河水位时空变化及原因初探[J].海洋学报:中文版,2012,34(1):48-58.
[6] 贾良文,陆永军,莫思平.大量采沙对东江下游及东江三角洲河道低水位的影响[J].水利水运工程学报,2006(3):1-8.
[7] 时翠,陈晓宏,张强.近几十年来珠江三角洲1月和7月水位变异分析[J].热带地理,2012,32(3):233-240.
[8] 杨远东,王永红,蔡斯龙,等.珠江流域下游近60年输沙率年际与年内变化特征[J].水土保持研究,2021,28(2):154-162.
[9] Liu F, Hu S, Guo X, et al. Recent changes in the sediment regime of the Pearl River(South China):Causes and implications for the Pearl River Delta[J]. Hydrological Processes, 2018,32:1771-1785.
[10] Wang Y H, Cai S L, Yang Y D, et al. Morphological consequences of upstream water and sediment changes and estuarine engineering activities in Pearl River Estuary channels over the last 50 years[J]. Science of the Total Environment, 2020,765(1):144-172.
[11] Yue S, Pilon P, Ca Vadias G. Power of the Mann-Kendall and Spearman's rho tests for detecting monotonic trends in hydrological series[J]. Journal of Hydrology, 2002,259:254-271.
[12] Johnson, Jeff W. A heuristic method for estimating the relative weight of predictor variables in vultiple regression[J]. Multivariate Behavioral Research, 2000,35(1):1-19.
[13] Luo X L, Zeng E Y, Ji R Y, et al. Effects of in-channel sand excavation on the hydrology of the Pearl River Delta, China[J]. Journal of Hydrology, 2007,343(3/4):230-239.
[14] 陈哲华,杨超裕,邓冬旺,等.广东省森林覆盖率的影响因素分析和模型预测:基于灰色关联分析和GM(1,1)模型[J].林业与环境科学,2017,033(5):101-106.
[15] 李传哲,王浩,于福亮,等.延河流域水土保持对径流泥沙的影响[J].中国水土保持科学,2011,09(1):1-8.
[16] 方神光,崔丽琴.枯季西江中游梯级水库调度对梧州流量影响初探[J].中国农村水利水电,2017,418(8):65-69.
[17] Peng G, Li P, Zhao B, et al. Use of double mass curves in hydrologic benefit evaluations[J]. Hydrological Processes, 2017,31(16):4639-4646.
[18] 广东省水利厅.广东省水资源公报(2019)[R].广州,2019.

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Last Update: 2022-04-20