水利学报2026，Vol.57Issue(2)：207-216,10.DOI:10.3724/j.slxb.20250663
珠江三角洲水网水动力自适应调整特性的系统解析
Systematic investigation of the hydrodynamic adaptive adjustment characteristics in the river network of the Pearl River Delta
摘要
Abstract
The Pearl River Delta(PRD),one of the world's most complex estuarine systems,serves as the backbone water network of the Guangdong-Hong Kong-Macao Greater Bay Area.While its hydrodynamics exhibit strong adap-tive capacity to long-term water-sediment variations and morphological evolution,localized hydrodynamic anomalies emerged in the 1990 s due to intense human activities like sand mining.Previous research primarily focused on key nodal points,lacking a systematic characterization of the hydrodynamic adjustment across the entire network.This study employs an integrated approach combining graph theory-based topological analysis and hydrodynamic numeri-cal modeling to reveal the physical morphological characteristics and dynamic connectivity of the PRD network,eluci-dating its adaptive adjustment mechanisms.Key findings indicate that the PRD's adaptive physical traits include increasing bifurcation density downstream,expanding cross-sectional flow areas,and enhanced network connectivity resilience.Its dynamic traits feature power-law growth in storage capacity and flow conveyance redundancy.Dynamic flow reversals in lateral branches under runoff restructure the network,while tidal cycles—especially low water levels and steep gradients—significantly amplify tidal channel discharge capacity,representing an adaptive mechanisms to runoff-tide dynamics.This study provides theoretical support for the systematic management and resilience regulation of the Pearl River Delta water network.关键词
珠江三角洲/自适应调整/节点分流/图论/河网拓扑结构Key words
Pearl River Delta/adaptive adjustment/node flow distribution/graph theory/river network topology分类
建筑与水利引用本文复制引用
何用,许劼婧,刘培,王汉岗,姚帅..珠江三角洲水网水动力自适应调整特性的系统解析[J].水利学报,2026,57(2):207-216,10.基金项目
国家自然科学基金项目(52479081) （52479081）
