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Connectivity Evaluation and Planning of a River-Lake System in East China Based on Graph Theory

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  • Jing Chen
  • Chenguang Xiao
  • Dan Chen

Abstract

The connectivity of the stream network plays an important role in water-mediated transport and river environments, which are threatened by the rugged development process in China. In this study, based on graph theory, a connectivity evaluation index system was built, which includes the Edge Connectivity, Edge-Node rate, Connectivity Reliability, and Edge Weight. The new evaluation standard and calculation method of each index is presented. The river-lake system of Fenhu industrial park in Jiangsu China is simplified to an Edge-Node graph and evaluated by the index system as a case study. The results indicate that the river-lake system of the research area has low Edge Connectivity, a high Edge-Node rate, and high reliability in the current connectivity level. In addition, the Edge Weight index of several channels does not satisfy the standard of the Basic Edge Weight. To solve the connectivity problems, specific project plans include broadening the unqualified channel and building canals linked with the low-connectivity lakes. The results show that, after the planning, the connectivity of the stream network in Fenhu industrial park will increase, and the connectivity evaluation index system is useful in the study area.

Suggested Citation

  • Jing Chen & Chenguang Xiao & Dan Chen, 2018. "Connectivity Evaluation and Planning of a River-Lake System in East China Based on Graph Theory," Mathematical Problems in Engineering, Hindawi, vol. 2018, pages 1-12, July.
    • Handle: RePEc:hin:jnlmpe:1361867
    DOI: 10.1155/2018/1361867
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