Hydrological Characteristics and Channel Evolution of Xijiang and Beijiang Rivers on Zhujiang Delta Area

WANG Sui-ji

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Article Navigation > Acta Sedimentologica Sinica > 2002 > 20(3): 376-381

WANG Sui-ji. Hydrological Characteristics and Channel Evolution of Xijiang and Beijiang Rivers on Zhujiang Delta Area[J]. Acta Sedimentologica Sinica, 2002, 20(3): 376-381.

Citation:

WANG Sui-ji. Hydrological Characteristics and Channel Evolution of Xijiang and Beijiang Rivers on Zhujiang Delta Area[J]. Acta Sedimentologica Sinica, 2002, 20(3): 376-381.

Hydrological Characteristics and Channel Evolution of Xijiang and Beijiang Rivers on Zhujiang Delta Area

WANG Sui-ji

Institute of Geographic Sciences & Natural Resources Research, CAS, Beijing,100101

Received Date: 2001-04-09
Rev Recd Date: 2002-12-01
Publish Date: 2002-09-10

Abstract

The relationships of velocity and discharge,water level elevation， sediment concentration and widthdepth ratio of xijiang and beijiang River channels on the zhujiang Delte area are analyzed and some differences between the two rivers are revealed. one of the differences is that the channel cross sections are different between the two rivers either in width- dept h ratio or in channel evolution despite the planf or mof the two rivers appears multiple channel system. The author considered that all the xijiang River channels and the beijiang channels at b and C belts on the Delta area are anastomosi ng pattern,but the beijiang River channels at A belt are not anastomosing river pattern. The xijiang anastomosing channels are typical and developed,and the beijiang anastomosing channels still are at the primary developing stage. The anastomosing channel for mation follows the channel avulsion mechanismduring flooding as Smith (1989)stated. However,the freCuency of channel avulsion is veryrare， so the anastomosi ng channel for mation has a long history. The anastomosing channels have cohesive natural levees that were consisted of fine grain sediment such as clay or mud. Artificial levees did not the for mation cause of the anastomosing channel pattern. Nevertheless it not only restrained the migration of the channels and maintained the channel stability but also partly prevented flooding. This human behavior resulted the high sedimentary ratio in the anastomosing channels and lower sedimentary ratio on the interchannel lands. So the relative rising velocity of the anastomosing channel beds is greater than that of the interchannel lands.

References

[1]	黄镇国,李平日,张仲英等.珠江三角洲形成发育演变[M].广州:科学普及出版社分社,1982.274[Huang Z,Li P,Zhang Z,et al. Formation,development and evolution of Pear River Delta[M].Guangzhou:Science Populariztion Press,1982.274]
[2]	黄镇国,李伟强,赖冠文等.珠江三角洲海平面上升对堤围防御能力的影响[J].地理学报,1999,54(6): 518～535[Huang Z,Li W,Lai G,et al.The influence of sea level rising on the embankments in the Zhujiang Delta[J]. Acta Geographica Sinica,1999,54(6):518～535]
[3]	李春初,王鸿寿,杨干然等.西江下游(梧州至磨刀门)河床床沙特征及其反映的沿程泥沙运动规律,海岸河口区动力、地貌、沉积过程论文集[M].北京:科学出版社,1985,111～119[Li C, Wang H,Yang G,et al. River bed sediment characteristics and its transporation rule.Dynamics,Geomorphology and Sedimentation in Coast and Estuary[M].Beijing:Science Press,1985.111～119]
[4]	乔彭年.珠江三角洲河网发育的成因分析[J].人民珠江,1981,(2): 32 [Qiao P.Analysis of formation cause of a river net in Zhujiang Delta[J].Renmin Zhujiang,1981,(2):32]
[5]	乔彭年.珠江三角洲西江干流河床演变的近代过程[J].地理科学,1983,3(2): 141～150[Qiao P.Neoteric process of Xijiang trunk channel evolution in the Zhujiang Delta[J].Geographical Science,1983,3(3):141～150]
[6]	李平日,乔彭年.珠江三角洲六千年来的发育模式[J].泥沙研究,1982,(3): 33～42[Li P, Qiao P.Developmental mode of the Zhujiang Delta since 6000 years[J].Sediment Research,1982,(3):33～42]
[7]	彭苏萍.复合型三角洲平原上网状河的基本特征[J].科学通报,1989,34(17): 1326～132[Neng S.The basic characterstics of the asnastomosing river in multipe deltas[J].Science Bulletin,34(17):1 326～1 328]
[8]	张周良,王芳华.广东三水盆地第四纪网状河沉积特征[J].沉积学报,1997,15(4): 58～63[Zhang Z,Wang F.Sedimentary characteristics of a quaternary anastomosing river in Sanshui Basin,Guangdong Province[J].Acta Sedimentologica Sinica,1997,15(4):58～63]
[9]	Smith D G,Putnam P E. Anastomosed river deposits: modern and ancient examples in Alberta, Canada[J]. Canadian Journal of Earth Sciences,1980, 17: 1 396～1 406
[10]	Smith D G, Smith N D. Sedimentation in anastomosed river systems: examples from alluvial vallays near Banff, Alberta[J]. Journal of Sedimentary Petrology, 1980,50: 157～164
[11]	王随继,任明达.根据河道形态和沉积物特征的河流新分类[J].沉积学报, 1999, 17(2): 240～246[Wang S,Ren M.A new classification of fluvial rivers according to channel planforms and sediment characteristicas[J].Acta Sedimentologica Sinica,1999,17(2):240～246]
[12]	Smith D G. Anastomosing river deposits, sedimentation rates and basin subsidence, Magdalena River, northwestern Columbia, South America[J]. Sediment. Geol., 1986,46: 177～196
[13]	王随继,尹寿鹏.网状河流和分汊河流的河型归属讨论[J].地学前缘,2000, 7(s): 79～86[Wang S,Yin S. Discussion on channel pattens of anastomosing and anabranched rivers[J].Earth Science Frontiers,2000,7(s):79～86]
[14]	Smith N D, Cross T A, Dufficy J P, Clough S R. Anatomy of an avulsion[J]. Sedimentology,1989, 36: 1～23
[15]	McCarthy T S, Ellery W N, Stanistreet I G. Avulsion mechanisms on the Okavango fan, Botswana: the control of a fluvial system by vegetation[J]. Sedimentology, 1992,39: 779～795
[16]	王随继.网状河流的河性、区域特点及多河道形成机理[D].北京:清华大学.2000[Wang S.General characteristics,local tratis and multiple-channel formation mechanism of anastomosing river[D].Beijing:Tsinghua University,2000]

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Hydrological Characteristics and Channel Evolution of Xijiang and Beijiang Rivers on Zhujiang Delta Area

Institute of Geographic Sciences & Natural Resources Research, CAS, Beijing,100101

Received Date: 2001-04-09

Rev Recd Date: 2002-12-01

Publish Date: 2002-09-10

Key words:

hydrological and sediment characteristics /
anastomosing river pattern /
channel formation and evolution /
lower xijiang and beijiang Rivers

Abstract: The relationships of velocity and discharge,water level elevation， sediment concentration and widthdepth ratio of xijiang and beijiang River channels on the zhujiang Delte area are analyzed and some differences between the two rivers are revealed. one of the differences is that the channel cross sections are different between the two rivers either in width- dept h ratio or in channel evolution despite the planf or mof the two rivers appears multiple channel system. The author considered that all the xijiang River channels and the beijiang channels at b and C belts on the Delta area are anastomosi ng pattern,but the beijiang River channels at A belt are not anastomosing river pattern. The xijiang anastomosing channels are typical and developed,and the beijiang anastomosing channels still are at the primary developing stage. The anastomosing channel for mation follows the channel avulsion mechanismduring flooding as Smith (1989)stated. However,the freCuency of channel avulsion is veryrare， so the anastomosi ng channel for mation has a long history. The anastomosing channels have cohesive natural levees that were consisted of fine grain sediment such as clay or mud. Artificial levees did not the for mation cause of the anastomosing channel pattern. Nevertheless it not only restrained the migration of the channels and maintained the channel stability but also partly prevented flooding. This human behavior resulted the high sedimentary ratio in the anastomosing channels and lower sedimentary ratio on the interchannel lands. So the relative rising velocity of the anastomosing channel beds is greater than that of the interchannel lands.

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Reference (16)

[1]	黄镇国,李平日,张仲英等.珠江三角洲形成发育演变[M].广州:科学普及出版社分社,1982.274[Huang Z,Li P,Zhang Z,et al. Formation,development and evolution of Pear River Delta[M].Guangzhou:Science Populariztion Press,1982.274]
[2]	黄镇国,李伟强,赖冠文等.珠江三角洲海平面上升对堤围防御能力的影响[J].地理学报,1999,54(6): 518～535[Huang Z,Li W,Lai G,et al.The influence of sea level rising on the embankments in the Zhujiang Delta[J]. Acta Geographica Sinica,1999,54(6):518～535]
[3]	李春初,王鸿寿,杨干然等.西江下游(梧州至磨刀门)河床床沙特征及其反映的沿程泥沙运动规律,海岸河口区动力、地貌、沉积过程论文集[M].北京:科学出版社,1985,111～119[Li C, Wang H,Yang G,et al. River bed sediment characteristics and its transporation rule.Dynamics,Geomorphology and Sedimentation in Coast and Estuary[M].Beijing:Science Press,1985.111～119]
[4]	乔彭年.珠江三角洲河网发育的成因分析[J].人民珠江,1981,(2): 32 [Qiao P.Analysis of formation cause of a river net in Zhujiang Delta[J].Renmin Zhujiang,1981,(2):32]
[5]	乔彭年.珠江三角洲西江干流河床演变的近代过程[J].地理科学,1983,3(2): 141～150[Qiao P.Neoteric process of Xijiang trunk channel evolution in the Zhujiang Delta[J].Geographical Science,1983,3(3):141～150]
[6]	李平日,乔彭年.珠江三角洲六千年来的发育模式[J].泥沙研究,1982,(3): 33～42[Li P, Qiao P.Developmental mode of the Zhujiang Delta since 6000 years[J].Sediment Research,1982,(3):33～42]
[7]	彭苏萍.复合型三角洲平原上网状河的基本特征[J].科学通报,1989,34(17): 1326～132[Neng S.The basic characterstics of the asnastomosing river in multipe deltas[J].Science Bulletin,34(17):1 326～1 328]
[8]	张周良,王芳华.广东三水盆地第四纪网状河沉积特征[J].沉积学报,1997,15(4): 58～63[Zhang Z,Wang F.Sedimentary characteristics of a quaternary anastomosing river in Sanshui Basin,Guangdong Province[J].Acta Sedimentologica Sinica,1997,15(4):58～63]
[9]	Smith D G,Putnam P E. Anastomosed river deposits: modern and ancient examples in Alberta, Canada[J]. Canadian Journal of Earth Sciences,1980, 17: 1 396～1 406
[10]	Smith D G, Smith N D. Sedimentation in anastomosed river systems: examples from alluvial vallays near Banff, Alberta[J]. Journal of Sedimentary Petrology, 1980,50: 157～164
[11]	王随继,任明达.根据河道形态和沉积物特征的河流新分类[J].沉积学报, 1999, 17(2): 240～246[Wang S,Ren M.A new classification of fluvial rivers according to channel planforms and sediment characteristicas[J].Acta Sedimentologica Sinica,1999,17(2):240～246]
[12]	Smith D G. Anastomosing river deposits, sedimentation rates and basin subsidence, Magdalena River, northwestern Columbia, South America[J]. Sediment. Geol., 1986,46: 177～196
[13]	王随继,尹寿鹏.网状河流和分汊河流的河型归属讨论[J].地学前缘,2000, 7(s): 79～86[Wang S,Yin S. Discussion on channel pattens of anastomosing and anabranched rivers[J].Earth Science Frontiers,2000,7(s):79～86]
[14]	Smith N D, Cross T A, Dufficy J P, Clough S R. Anatomy of an avulsion[J]. Sedimentology,1989, 36: 1～23
[15]	McCarthy T S, Ellery W N, Stanistreet I G. Avulsion mechanisms on the Okavango fan, Botswana: the control of a fluvial system by vegetation[J]. Sedimentology, 1992,39: 779～795
[16]	王随继.网状河流的河性、区域特点及多河道形成机理[D].北京:清华大学.2000[Wang S.General characteristics,local tratis and multiple-channel formation mechanism of anastomosing river[D].Beijing:Tsinghua University,2000]

Hydrological Characteristics and Channel Evolution of Xijiang and Beijiang Rivers on Zhujiang Delta Area

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