Characteristics of Runoff-Sediment Variation of Dongting Lake in Recent Six Decades and Its Relationship with Human Activities

ZHANG Lin; MA Jing-xu; ZHANG Qian; YU Ru; REN Bei; WANG Yi-xin; ZHANG Ying-hao

doi:10.11988/ckyyb.20200708

PDF(5004 KB)

Journal of Changjiang River Scientific Research Institute ›› 2021, Vol. 38 ›› Issue (9) : 14-20. DOI: 10.11988/ckyyb.20200708

RIVER-LAKE PROTECTION AND REGULATION

Characteristics of Runoff-Sediment Variation of Dongting Lake in Recent Six Decades and Its Relationship with Human Activities

ZHANG Lin, MA Jing-xu, ZHANG Qian, YU Ru, REN Bei, WANG Yi-xin, ZHANG Ying-hao

Author information +

History +

Abstract

The characteristics of runoff-sediment variation of Dongting Lake in recent six decades and its relationship with human activities were analyzed using Mann-Kendall trend test and double cumulative curve method based on the runoff-sediment data of Dongting Lake from 1955 to 2018. Under the influence of the waterway changes in Jingjiang reach of Yangtze River and the construction of water conservancy projects (WCP), declining trends were observed for the time series of runoff and sediment discharge at the three outlets of Yangtze River into Dongting Lake and the four rivers into Dongting Lake, of which the former was most significant. Affected by the water-sediment change at the three outlets, both the annual runoff and sediment discharge at Chenglingji presented dropping trends. An obvious downward trend was also discovered for the sediment deposition inside the Dongting Lake from 1955 to 2018. Such downward trend can be mainly attributed to the decrease of three outlets' sediment discharge caused by human activities such as the construction of WCP, which reduced the sediment concentration and deflected the dual cumulative runoff-sediment curves. The impact of human activities on runoff-sediment variation of Dongting Lake can be quantified by building the relations between cumulative runoff and sediment discharge before and after the deflection point. Calculations in this paper showed that human activities cut the annual sediment discharge at the three outlets, four rivers, and Chenglingji by 0.69×10⁸ t/a (2003-2018), 0.22×10⁸ t/a (1986-2018), and 0.21× 10⁸ t/a (1981-2018).

Key words

runoff-sediment variation / runoff / sediment / Mann-Kendall trend test / double cumulative curve / human activities / Dongting Lake

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

ZHANG Lin, MA Jing-xu, ZHANG Qian, YU Ru, REN Bei, WANG Yi-xin, ZHANG Ying-hao. Characteristics of Runoff-Sediment Variation of Dongting Lake in Recent Six Decades and Its Relationship with Human Activities[J]. Journal of Changjiang River Scientific Research Institute. 2021, 38(9): 14-20 https://doi.org/10.11988/ckyyb.20200708

References

[1] 李景保,王克林,秦建新,等.洞庭湖年径流泥沙的演变特征及其动因[J].地理学报,2005,60(3):503-510.
[2] 李晖, 尹辉, 白旸, 等. 近60年洞庭湖区水沙演变特征及趋势预测[J]. 水土保持研究, 2013, 20(3): 139-142.
[3] 覃红燕,谢永宏,邹冬生.湖南四水入洞庭湖水沙演变及成因分析[J].地理科学,2012,32(5):609-615.
[4] 胡光伟, 毛德华, 李正最, 等. 三峡工程运行以来洞庭湖水沙过程变异及其影响分析[J]. 水土保持研究, 2013, 20(5): 170-175,192.
[5] 代稳, 谭芬芳, 于亚文, 等. 水利工程和降水波动对洞庭湖水沙过程的定量分析[J]. 水电能源科学, 2017, 35(7): 47-51.
[6] 杨敏, 毛德华, 刘培亮, 等. 1951-2015年洞庭湖水沙演变及人类活动对径流影响的定量评估[J]. 中国水土保持, 2019(1): 38-43,69.
[7] HAMED K H. Trend Detection in Hydrologic Data: The Mann-Kendall Trend Test under the Scaling Hypothesis[J]. Journal of Hydrology, 2008, 349(3/4): 350-363.
[8] ZHANG Q, LIU C L, JIANG T. Observed Trends of Annual Maximum Water Level and Streamflow during Past 130 Years in the Yangtze River basin, China[J]. Journal of Hydrology, 2006, 324: 255-265. DOI: 10.1016/J.JHYDROL.2005.09.023.
[9] ZHANG Q, XU C Y, BECKER S,et al. Sediment and Runoff Changes in the Yangtze River Basin during Past 50 Years[J]. Journal of Hydrology, 2006, 331(3/4): 511-523.
[10] MANN H B. Non-parametric Testsagainst Trend[J]. Econometrica, 1945, 13(3): 245-259.
[11] KENDALL M G. Rank Correlation Methods[M]. London: Charles Griffin, 1975.
[12] LU X X, RAN L S, LIU S,et al. Sediment Loads Response to Climate Change: A Preliminary Study of Eight Large Chinese Rivers[J]. International Journal of Sediment Research, 2013, 28(1): 1-14.
[13] GUO L C, SU N, ZHU C Y, et al. How Have the River Discharges and Sediment Loads Changed in the Changjiang River Basin Downstream of the Three Gorges Dam[J]. Journal of Hydrology, 2018, 560: 259-274.
[14] 杨新, 延军平, 刘宝元. 无定河年径流量变化特征及人为驱动力分析[J]. 地球科学进展, 2005, 20(6): 637-642.
[15] 时兴合, 秦宁生, 汪青青, 等. 黄河上游径流变化特征及其影响因素初步分析[J]. 中国沙漠, 2007, 27(4): 690-696.
[16] 许炯心. 长江上游干支流近期水沙变化及其与水库修建的关系[J]. 山地学报, 2009, 27(4): 385-393.
[17] 李丽娟, 郑红星. 华北典型河流年径流演变规律及其驱动力分析:以潮白河为例[J]. 地理学报, 2000, 55(3): 309-317.
[18] 龚原, 袁玉江, 何清. 气候转暖及人类活动对北疆中小河流降水-径流关系的影响[J]. 中国沙漠, 2003, 23(5): 569-572.
[19] 渠庚, 唐峰, 刘小斌. 荆江三口与洞庭湖水沙变化及影响[J]. 水资源与水工程学报, 2007(3):94-97,100.
[20] 穆锦斌, 张小峰, 许全喜. 荆江三口分流分沙变化研究[J]. 水利水运工程学报, 2008(3): 22-28.
[21] 谢永宏, 李峰, 陈心胜,等. 荆江三口入洞庭湖水沙演变及成因分析[J]. 农业现代化研究, 2012, 33(2): 203-206.
[22] 余奕昌. 长江下荆江裁弯对东南洞庭湖区的淤积分析[J]. 海洋湖沼通报, 1992(3): 16-20.
[23] 张祥志. 洞庭湖水沙特性和泥沙淤积分析[J]. 华东师范大学学报(自然科学版), 1996(1): 62-69.
[24] 于亚文, 戴志军, 梅雪菲,等. 近60年来洞庭湖出湖泥沙动态变化与影响机制[J]. 自然科学报, 2018(4): 159-170.
[25] 朱玲玲, 陈剑池, 袁晶, 等. 洞庭湖和鄱阳湖泥沙冲淤特征及三峡水库对其影响[J]. 水科学进展, 2014, 25(3): 348-357.