Abstract
Based on the field-survey prototype hydrology data in typical years, the effect during the running periods of different dispatch modes of the Three Gorges Reservoir on the water regimes in Dongting Lake area is comparatively analyzed. The results are shown as follows. (1) The influence periods are from 25 May to 10 June, from 1 July to 31 August, from 15 September to 31 October and from December to the next April, among which the influence of the water-supplement dispatch in the dry season is not very sensitive. (2) During the period under the pre-discharge dispatch, the runoff volume slightly increases as well as both the average water level and the highest water level rise in the usual year. While in the wet and dry years, the average increase in the runoff volume is 40.25×108 m3 and the average rises of the average water level and the highest water level are both 1.06 m. (3) As for the flood-storage dispatch, the flood volume increases slightly, in the dry and wet years, the flood volume, the average water level and the highest water level averagely reduce by 444.02×108 m3, 2.64 m and 1.42 m respectively. (4) Under the water-storage dispatch, the runoff volume slightly increases and the water level heightens in a sort in the usual year. And in the dry and wet years, the average decreases in the runoff volume, the average water level and the highest water levels are respectively 185.27×108 m3, 3.13 m and 2.14 m. (5) During the period under the water-supplement dispatch, the runoff volume, the average water level and the highest water levels averagely decline by 337.7×108 m3, 1.89 m and 2.39 m respectively in the usual and wet years. However, in the dry year, the runoff volume increases as well as the average and highest water levels slightly go up.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Chen Shaojin, 2004. Influence of Three Gorges Project on water environment of Dongting Lake. Water Resources Protection, (5): 33–37, 70. (in Chinese)
Dai Shibao, Yang Shilun, Zhao Huayun et al., 2005. Response of middle and lower reaches of Yangtze River to the initial operation stage of the Three Gorges Project. Journal of Sediment Research, (5): 35–39. (in Chinese)
Dong Nianhu, Fang Chunming, Cao Wenhong, 2010. Non-equilibrium sediment transport in the Three Gorges Reservoir. Journal of Hydraulic Engineering, 41(6): 653–658. (in Chinese)
Evans M V, Attia K, 1990. Changes to the properties of the River Nile channel after high Aswan Dam. National Seminar on Physical Responses of the River Nile to Interventions. 12–13 Nov. Cairo, Egypt.
Fang Chunming, Zhong Zhengqin, 2001. The influence of capacity decrease on flood stages in Dongting Lake and in Yangtze River. Journal of Hydraulic Engineering, 32(11): 70–74. (in Chinese)
Gu Qingfu, Wang Jianjia, 2004. Analysis on the flood control role of the Three Gorges Project for typical floods of the Dongting Lake. Yangtze River, 35(2): 9–10, 18, 51. (in Chinese)
Hong Lin, Dong Leihua, Li Wenzhe, 2007. Impact of Three Gorges Reservoir on water level, sediment and water quality of Dongting Lake. China Water Resources, (6): 13–14. (in Chinese)
Huang Zhenli, 2001. On the ecological and environmental impacts of Aswan High Dam. Resources and Environment in the Yangtze Basin, 10(1): 82–88. (in Chinese)
Jin Gemu, 2001. The impact of the Three Gorges Reservoir on the water environment of Dongting Lake. Hunan Hydro & Power, (6): 21–27. (in Chinese)
Li Jingbao, Chang Jiang, Lu Dianqing et al., 2009. The hydrological effect between Jingjiang River and Dongting Lake during the initial period of Three Gorges Project operation. Acta Geographica Sinica, 64(11): 1342–1352. (in Chinese)
Lu Hongwei, Zeng Guangming, Zhang Shuofu, 2004. The effect of operation of Changjiang Gorges Project on water environmental capacity of Dongting Lake. Environmental Engineering, 22(1): 61–63, 5. (in Chinese)
McAnally W H, Priechard W H, 1997. Salinity control in Mississippi River under drought flows. Journal of Waterway, Port, Coastal and Ocean Engineering, 123(1): 34–40.
Nilsson C, Reidy C A, Dynesius M et al., 2005. Fragmentation and flow regulation of the world’s large river systems. Science, 308: 405–408.
Ning Lei, Zhong Zhiyu, 2004. Influence of TGP reservoir filling in 2003 on the water regime of middle and lower reach of Yangtze River. Yangtze River, 35(12): 9–24, 53. (in Chinese)
Qin Wenkai, Fu Renhao, Wang Chonghao et al., 1998. Silting of Dongting Lake before and after completion of the Three Gorges Project. Journal of Tsinghua University (Science and Technology), 38(1): 86–89. (in Chinese)
Wang Chonghao, Han Qiwei, 1997. Estimate of aggregation and degradation in the Dongting Lake and the flood diversion channels of the Jingjiang River after the Three Gorges reservoir being built. Water Resources and Hydropower Engineering, 28(11): 16–20. (in Chinese)
Wu Xin, Dong Leihua, Li Wenzhe et al., 2007. The function of the construction of the Three Gorges Reservoir to alleviate the flood of Dongting Lake. Guangdong Water Resources and Hydropower, (4): 58–59, 65. (in Chinese)
Xie Yueqiu, 2001. The influence of the Three Gorges Reservoir on Dongting Lake and its countermeasures. Hunan Hydro & Power, (3): 28–29. (in Chinese)
Zhang Xibing, Lu Jinyou, Wang Min, 2010. Preliminary study on flow and sediment changing and influence on Dongting Lake after the Three Gorges Project operation. Resources and Environment in the Yangtze Basin, 19(6): 640–643. (in Chinese)
Zhou Beida, Liu Yonghua, 2003. The effect of the operation of the Three Gorges Reservoir on the flood water level of Dongting Lake. Hunan Hydro & Power, (1): 27–29. (in Chinese)
Author information
Authors and Affiliations
Corresponding author
Additional information
Foundation: National Natural Science Foundation of China, No.41071067; Program of the Key Discipline Construction of the Physical Geography in Hunan Province
Author: Ou Chaomin (1979–), Ph.D and Lecturer, specialized in disaster management and emergency management.
Rights and permissions
About this article
Cite this article
Ou, C., Li, J., Zhang, Z. et al. Effects of the dispatch modes of the Three Gorges Reservoir on the water regimes in the Dongting Lake area in typical years. J. Geogr. Sci. 22, 594–608 (2012). https://doi.org/10.1007/s11442-012-0949-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11442-012-0949-7