地理科学 ›› 2010, Vol. 30 ›› Issue (5): 755-759.doi: 10.13249/j.cnki.sgs.2010.05.755

• 论文 • 上一篇    下一篇

莱州湾东岸河流的分形特征与流域地貌发育研究

孙祝友1, 杜国云2, 朱大奎1, 张永战1   

  1. 1. 南京大学地理与海洋科学学院, 江苏 南京 210093;
    2. 鲁东大学地理与规划学院, 山东 烟台 264025
  • 收稿日期:2009-12-28 修回日期:2010-03-07 出版日期:2010-09-20 发布日期:2010-09-20
  • 基金资助:
    国家自然科学基金项目(40271004)外延成果、山东省自然科学基金重大项目(Z2003E01)、鲁东大学校基金重点项目(20053202)资助。

Fractal Features of Rivers in Eastern Coast of Laizhou Bay and Evolution of Regional Fluvial Landform

SUN Zhu-you1, DU Guo-yun2, ZHU Da-kui1, ZHANG Yong-zhan1   

  1. 1. School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, Jiangsu 210093;
    2. College of Geography and Planning, Ludong University, Yantai, Shandong 264025
  • Received:2009-12-28 Revised:2010-03-07 Online:2010-09-20 Published:2010-09-20

摘要: 莱州湾东岸发育有分形特征典型的小尺度河流,受区域内陆海相互作用影响显著。基于前人对莱州湾东岸的研究以定性描述为主,而缺乏定量分析这一现状,以莱州湾东岸3条典型河流为例,采用分形分析和GIS技术相结合的方法,对区域内流域地貌特征进行了定量分析。结果表明,分形分析同样适用于研究小尺度河流,可很好地揭示区域内陆海相互作用特征及流域地貌所处的发育阶段。基于分形方法所反映的流域地貌特征与数字高程模型所提取的流域地貌信息较吻合,最终结果能较客观地反映出流域地貌的发育特征。

Abstract: There are several small-scale rivers with typical fractal features in the eastern coast of Laizhou Bay. The fluvial landform character are deeply influenced by regional land-ocean interaction. Most previous researches on Laizhou Bay focused on the southern coast, mainly including landform descriptions, saltwater intrusion, coastal erosion, sedimentary environment and dynamics and so on. There were few quantitative studies on fluvial landform of the eastern coast. Besides, the fractal features of large-scale rivers have been well-studied, but not the small-scale rivers. In this study, based on the contour data of the eastern coast of Laizhou Bay in 1969 (because there are few anthropic activities at that time), the fluvial landform features are quantitatively analyzed by applying fractal methods, including Overlay Method and Horton’s Law, and GIS technology to three typical small-scale rivers (the Huangshuihe River, the Wanghe River and the Jiehe River) in the region.On the basis of Overlay Method’s results and He’s standard of classification of fluvial landform, the fluvial landform in the eastern coast of Laizhou Bay is on the primary stage, not well-developed; and the river channel fractal dimension data of the Wanghe River is the largest, which demonstrates that its evolution is deeply influenced by historical migration of the river channel. According to Horton’s Law, the fractal dimension data show that the evolution of rivers in the eastern coast of Laizhou Bay are natural and normal, and are influenced by the intensity of tectonic movements and the number of fault zones in this region or adjacent area. The fractal dimension data of the Jiehe River is the smallest, because there are only a few fault zones in its drainage area and it is less influenced by the famous Tancheng-Lujiang Fault Zone. Compared with our field work, the fractal methods can better reveal the fluvial landform features of the eastern coast of Laizhou Bay, and both the fractal dimension data and regional Digital Elevation Model (DEM) information are in accordance with the actual fluvial landform features in the region. The fluvial landform features in the eastern coast of Laizhou Bay are related to sustained marine regression process since the Holocene high sea level and the lowering of erosion base level and response to the land-ocean interaction of coastal zone (LOICZ) in this region.The fractal methods are suitable to apply to small-scale rivers,and the final conclusion will be more accurate and comprehensive if more small-scale rivers in the coastal zone are studied.

中图分类号: 

  • P931.1