长江来沙锐减与海岸滩涂资源的危机

doi:10.11821/xb200603007

Abstract

Abstract:

The periodicity and trends of 1951-2004 time series of water and sediment discharges at Datong Station and precipitation in the catchment were analyzed using wavelet method. Bathymetric data were processed for coastal area and profile using Arc-GIS software. A typical intertidal flat was daily measured from May 2002 to August 2005 for comparison of bed level between pre- and post-impoundment of the Three Gorges Reservoir. The results indicate that the sediment discharge shows a decreasing trend from the late 1960s (P < 0.001) while it varies in periods of 2-3 years and 8-9 years together with water discharge and precipitation. The decreasing trend is attributed mainly to dam construction while the periodicity is attributed to climate variability. After the impoundment of the Three Gorges Reservoir, the sediment discharge was reduced to the lowest level in the history. As a result of the drastic decrease in riverine sediment supply, the delta is transforming from progradation to recession. The sediment supply from the Yangtze is forecasted to decrease from 1.5×10⁸-2×10⁸ t/a at the present to -1×10⁸ t/a in the coming decades, which will result in crisis of coastal resources.

Key words: sediment discharge, intertidal tidal flat, delta, Yangtze River

LI Ming, YANG Shilun, LI Peng, LIU Zhe, DAI Shibao, GAO Ang, ZHANG Jing. Drastic Decrease in Sediment Supply from Yangtze River and Coastal Crisis[J].Acta Geographica Sinica, 2006, 61(3): 282-288.

References

[1] Goodwin P, Mehta A J, Zedler J B. Coastal wetland restoration: an introduction. J. Coastal Res., 2001, 27: 1-6.

[2] Trenhaile A S. Coastal Dynamics and Landforms. Oxford UK: Oxford University Press, 1997. 366.

[3] Fanos A M. The impact of human activities on the erosion and accretion of the Nile delta coast. Journal of Coastal Research, 1995, 11(3): 821-833.

[4] Stanley D J, Warne A G. Nile delta in its destruction phase. Journal of Coastal Research, 1998, 14(3): 794-825.

[5] Coleman J M, Robert H H, Stone G W. Mississippi River delta: an overview. Journal of Coastal Research, 1998, 14: 698-716.

[6] Carriquiry J D, Sánchez A, Camacho-Ibar V F. Sedimentation in the northern Gulf of California after cessation of the Colorado River discharge. Sedimentary Geology, 2001, 144(1-2): 37-62.

[7] Sánchez-Arcilla A, Jiménez J A, Valdemoro H I. The Ebro Delta: morphodynamics and vulnerability. Journal of Coastal Research, 1998, 14(3): 754-772.

[8] Batalla R J, Gómez C M, Kondolf G M. River impoundment and changes in flow regime. Ebro River basin, northeastern Spain. Journal of Hydrology, 2004, 290: 117-136.

[9] Xu Jiongxin. The Yellow River Mouth extension since 1194 as influenced by human activities. Progress in Geography, 2001, 20: 1-9.
[许炯心. 人类活动对公元1194年以来黄河河口延伸速率的影响. 地理科学进展, 2001, 20: 1-9.]

[10] Yang Z S, Wang H J, Saito Y et al. Phase change of the modern Huanghe delta evolution since its last end channel shift in 1976 (and its phase change). In: Thanawat Jarupongsakul, Yoshiki Saito (eds.), 5th International Conference on Asian Marine Geology, AGCP-475 DeltaMAP and APN Mega-Delta, January 13-18, 2004, Bangkok, Thailand. 256.

[11] Qian Chunlin. Effects of the water conservancy projects in the Luanhe River Basin on Luanhe River Delta, Hebei Province. Acta Geographica Sinica, 1994, 49(2): 158-166.
[钱春林. 引滦工程对滦河三角洲的影响. 地理学报, 1994, 49(2): 158-166.]

[12] Luo Xianlin, Li Chunchu, Luo Zhangren. Erosion and abandonment of the Nandu River Delta, Hainan Island. Acta Oceanologica Sinica, 2000, 22(3): 55-60.
[罗宪林, 李春初, 罗章仁. 海南岛南渡江三角洲的废弃与侵蚀. 海洋学报, 2000, 22(3): 55-60.]

[13] Eisma D. Intertidal Deposits: River Mouths, Tidal Flats and Coastal Lagoons. Boca Raton, Florida: CRC Press, 1998. 459.

[14] Li B, Li C, Shen H. A preliminary study on sediment flux in the Changjiang Delta during the postglacial period. Science in China (Series D), 2003, 46(7): 743-752.

[15] Chen Jiyu, Wang Baocan, Liu Cangzi. Coastal geomorphology in China. In: Chen Jiyu, Wang Baocan, Yu Zhiying (eds.), Developments and Evolution of China's Coast. Shanghai: Shanghai Scientific & Technical Publishers, 1989. 18-48.
[陈吉余, 王宝灿, 刘苍字. 中国海岸地貌. 见: 陈吉余, 王宝灿, 虞志英主编, 中国海岸发育过程和演变规律. 上海: 上海科技出版社, 1989. 18-48.]

[16] Hu Fangxi, Gu Guochuan, Han Mingbao et al. Characteristics of tides, currents and sediment transportation in Wenzhou Region. In: Chen Jiyu, Wang Baocan, Yu Zhiying (eds.), Developments and Evolution of China's Coast. Shanghai: Shanghai Scientific & Technical Publishers, 1989. 403-415.
[胡方西、谷国传、韩明宝等. 温州海区潮汐、水流及泥沙流基本特征．见：陈吉余, 王宝灿, 虞志英主编, 中国海岸发育过程和演变规律. 上海: 上海科技出版社, 1989. 403-415.]

[17] Davies J L. A morphogenic approach to world shorelines. Zeit. fur Geomorph., 1964, 8: 127-142.

[18] Yang Shilun, Fu Dejian, Chen Xiaohua et al. Tides and tide-dominated coasts. In: Yang Shilun (ed.), An Introduction to Coastal Environments and Geomorphological Processes. Beijing: China Ocean Press, 2003. 87-115.
[杨世伦, 傅德健, 陈小华. 潮汐和潮汐作用为主的海岸. 见: 杨世伦主编, 海岸环境和地貌过程导论. 北京: 海洋出版社, 2003. 87-115.]

[19] Yang Shilun. Coastal wetland. In: Yang Shilun (ed.), An Introduction to Coastal Environments and Geomorphological Processes. Beijing: China Ocean Press, 2003. 171-186.
[杨世伦. 海岸湿地. 见: 杨世伦主编, 海岸环境和地貌过程导论. 北京: 海洋出版社, 2003. 171-186.]

[20] Yang S L, Zhao Q Y, Belkin I M. Temporal variation in the sediment load of the Yangtze River and the influences of the human activities. Journal of Hydrology, 2002, 263: 56-71.

[21] Torrence C, Compo G P. A practical guide to wavelet analysis. Bulletin of the American Meteorological Society, 1998, 79: 61-78.

[22] Yang S L, Friedrichs C T, Ding P X et al. Morphological response of the outer Yangtze River Mouth to major storms. Estuaries, 2003, 26(6): 1416-1425.

[23] Dima M, Rimbu N, Dima I. Arctic oscillation variability generated through inter-ocean interactions. Geophys. Res. Letters, 2002, 29. doi: 10.1029/2002GL014717.

[24] Yang S L, Zhang J, Zhu J et al., 2005. Impact of dams on Yangtze River sediment supply to the sea and delta intertidal wetland response. Journal of Geophysical Research, 2005, 110(F03006). doi: 10.102912004JF000271.

[25] Yang S L, Ding P X, Chen S L. Changes in progradation rate of the tidal flats at the mouth of the Changjiang River, China. Geomorphology, 2001, 38: 167-180.

[26] Yang Shilun, He Songlin. The formation and evolution of the Jiuduansha tidal island as well as their relation to the development of the north and south passages in the Yangtze River Estuary. The Ocean Enigeering, 1998, 16(4): 55-65.
[杨世伦, 贺松林. 长江口九段沙的形成演变及对南北槽发育的影响. 海洋工程, 1998, 16(4): 55-65.]

[27] Yu Zhiying, Lou Fei. The evolvement characteristics of Nanhuizui foreland in the Changjiang Estuary, China. Acta Oceanologica Sinica, 2004, 26(3): 47-53.
[虞志英, 楼飞. 长江口南汇嘴近岸海床近期演变分析: 兼论长江流域来沙量变化的影响. 海洋学报, 2004, 26(3): 47-53.]

[28] Manabe S, Milly P C D, Wetherald R. Simulated long-term changes in river discharge and soil moisture due to global warming. Hydrol. Sci. J., 2004, 49(4): 625-642.

[29] Arora V K, Boer G J. Effects of simulated climate change on the hydrology of major river basins. J. Geophys. Res., 2001, 106(D4): 3335-3348.

[30] Xu J X. Sediment flux to the sea as influenced by changing human activities and precipitation: example of the Yellow River, China. Environ. Manage., 2003, 31(3): 328-341.

[31] Li Jiufa, Wan Xinning, Chen Xiaohua et al. Coastal land resources in Shanghai with analysis on their sustainable exploitation. Resources and Environment in the Yangtze Basin, 2003, 12(1): 17-22.
[李九发, 万新宁, 陈小华等. 上海滩涂后备土地资源及其可持续开发途径. 长江流域资源与环境, 2003, 12(1): 17-22.]

Drastic Decrease in Sediment Supply from Yangtze River and Coastal Crisis

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