复杂河流网络节点重要度分析

Analysis of node criticality in complex river network

流域中,具有一定水力联系的河流、交叉口、水利工程设施等纵横交错地构成了一个复杂的河流网络。应用复杂网络理论,建立了河流网络模型,并描述了节点的重要度。将该网络模型应用于海河流域,建立了含有565个节点的海河流域网络。计算了海河流域网络节点的度指标和介数指标,并分别划分为8个等级和12个等级,对不同等级的节点进行节点重要度分析。通过对比分析节点的度指标和介数指标,证明了介数指标更能准确刻画河流网络节点的重要性。复杂网络中节点重要度分析可以为水利规划提供理论依据。

Rivers, intersections, water conservancy facilities possesses a certain hydraulic connection and criss - crossly form a complex river network. The paper applied the theory of complex networks to build a river network model and describes the vital nodes. It applied the model to Haihe River basin and set up the network of 565 nodes, and calculated degree centrality and betweenness centrality of Haihe River basin network. Degree centrality is divided into eight levels and Betweenness Centrality is divided into twelve levels to analyze vital nodes of different level. After comparative analysis of degree centrality and betweenness centrality, betweenness centrality is proved to be more accurate in describing the vital node. the analysis of node criticality in complex river network can provide a theoretical basis for the plan of water resources.