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.
西北江三角洲低水位变化及其影响因素
- Title:
- Variation of Low Water Level and Its Influencing Factors in the West and North River Delta
- 文章编号:
- 1005-3409(2022)03-0404-07
- 分类号:
- TV143
- 文献标志码:
- A
- 摘要:
- 河流三角洲低水位的变化受气候因素和人类活动共同控制,对河道的通航与取水具有重要意义。为探明西北江三角洲低水位的演变趋势和各影响因素对其的作用,基于马口、三水站1972—2017年最低水位序列,结合两站河床地形、流域降水、径流和下边界海平面高度等资料,识别出年最低水位的演变趋势,并探讨了各影响因素在其变化过程中起到的作用。结果表明:马口、三水站年最低水位演变过程可分为波动期(1972—1990年)、突变下降期(1991—2003年)和缓变回升期(2004—2017年)。1972—1990年最低水位受降水因素的控制在-0.11 m上下波动,而1991—2003年在河床地形剧烈下切的驱动下最低水位大幅下降至-0.50 m以下,进入2004—2017年最低水位在水土保持措施和水库对枯季径流的调节作用等多因素共同影响下又有所回升。近年来,人类活动对西北江三角洲低水位的影响已经逐步超过气候因素,成为低水位演变的主导因素。
- 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.
参考文献/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.
备注/Memo
收稿日期:2020-04-25 修回日期:2020-05-12
资助项目:河南省科技公关项目(212102310964,222102320177); 国家自然科学基金项目(51879172)
第一作者:李莲秀(1972—),女,四川内江市人,副教授,硕士,研究方向:市政给排水工程与管理研究。E-mail:wsj412@163.com
通信作者:李玉隆(1985—),男,四川乐山人,讲师,在职博士研究生,研究方向为水文水资源学。E-mail:liyl1985@126.com