地理学报

地理学报 ›› 1996, Vol. 51 ›› Issue (4): 340-349.doi: 10.11821/xb199604007

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苏北低地系统及其对海平面上升的复杂响应

陈晓玲, 王腊春, 朱大奎   

  1. 南京大学海岸与海岛开发国家试点实验室,南京210093
  • 收稿日期:1995-04-01 修回日期:1995-10-01 出版日期:1996-07-15 发布日期:1996-07-15
  • 基金资助:
    国家教委博士学科点专项科研基金

SYSTEM OF NORTHERN JIANGSU LOWLANDS ANDITS COMPLEX RESPONSES TO THE SEA LEVEL RISE

Chen Xiaoling, Wang Lachun, Zhu Dakui   

  1. State Pilot Laboratory of Coast & Island Exploitation and Department of Geo & Ocean Sciences Nanjing University.Nanjing 210093
  • Received:1995-04-01 Revised:1995-10-01 Online:1996-07-15 Published:1996-07-15

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8 | 1

摘要： 苏北低地位处我国沿海中部，地面平均高程3m左右，平均坡降多在0.2-2之间，河渠水面比降平均为0.04,极易发生洪涝灾害。未来海平面上升，将对这一洪涝灾害频发地区带来较为严重的危害。本文通过剖析苏北低地系统状态与结构，考察低地系统对海平面上升的复杂响应过程，以寻求系统对未来全球变化的积极适应方式。

关键词: 苏北低地, 海平面, 系统结构, 系统响应

Abstract: The system of northern Jiangsu lowlands has its particular states and structures due to the seariver interaction.It is a low-lying plain with a mean elevation of about 3 metres above sea level.Its slope gradient is about 0.2‰-2‰ and the mean gradient of channels’ water stage is 0.004‰. By making the digital elevation model and analyzing the Quaternary sedimentary facies,the system ofnorthern Jiangsu lowlands is divided into three parts: the ancient lagoon low-lying plain of Lixiahearea, the marine plain along coastal area and the Changjiang river delta plain.The sea level rise willhave severe effects on the system, which will be more frequently endangered by flood and water logging.Through analyzing the states and structures of the northern Jiangsu lowlands system.this paper studies its complex responses to the sea level rise, and gives the measures adapted to the sea levelrise.

Key words: northern Jiangsu lowlands, sea level, states and structures of system, responses and adjustments of system

中图分类号: 

  • P731.23