Scholarlink

Context <p>River valley basin areas have historically been favored for human settlement and urban development due to their advantageous landscape ecosystems.</p> Objective <p>This study aims to elucidate spatial differentiation patterns and summarize the characteristic patterns of landscape ecological network connectivity within river valley basins.</p> Methods <p>Focusing on Nanning, a representative river valley basin city, the study establishes a multilevel analytical framework using the 'individual-subgroup-system' approach. The methodology includes constructing an Ecological Patch Correlation Matrix, analyzing landscape patch nodes, element types, community organization, and network systems, applying centrality analysis, importance index screening, network structure index comparison, network morphology analysis, and EI index evaluation, and incorporating topographic characteristics to examine landscape ecosystem structure variation across scales.</p> Results <p>Based on landscape connectivity importance indicators, four distinct landscape zones are identified: the Northern Core Barrier Zone, Central River-Dominated Zone, Circular Ecological High-Quality Zone, and Weak North–South Connectivity Zone across urban areas. The predominant landscape patches in Nanning are woodlands, croplands, and water bodies, with weak correlations between landscape area and importance indicators. Among landscape-type subgroups, woodlands and water bodies exhibit clear hierarchical structures, while grasslands show the least. Within community subgroups, spatial networks display characteristics such as modular communities, balanced communities, hub-node dominated communities, high clustering–low modularity networks, and small-world networks. The Ecological Integrity (EI) index for water corridors is significantly higher than for other elements.</p> Conclusion <p>This study proposes a river valley ecological paradigm, offering valuable insights for constructing ecological security patterns in cities with similar valley types globally.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Multi-scale assessment and optimization of landscape connectivity in valley-basin systems

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月7日

查看全文
  • Chunxiao Ma,
  • Jiamin Wu,
  • Zhiqiang Yan,
  • Haochen Shi,
  • Shifu Wang

摘要

Context

River valley basin areas have historically been favored for human settlement and urban development due to their advantageous landscape ecosystems.

Objective

This study aims to elucidate spatial differentiation patterns and summarize the characteristic patterns of landscape ecological network connectivity within river valley basins.

Methods

Focusing on Nanning, a representative river valley basin city, the study establishes a multilevel analytical framework using the 'individual-subgroup-system' approach. The methodology includes constructing an Ecological Patch Correlation Matrix, analyzing landscape patch nodes, element types, community organization, and network systems, applying centrality analysis, importance index screening, network structure index comparison, network morphology analysis, and EI index evaluation, and incorporating topographic characteristics to examine landscape ecosystem structure variation across scales.

Results

Based on landscape connectivity importance indicators, four distinct landscape zones are identified: the Northern Core Barrier Zone, Central River-Dominated Zone, Circular Ecological High-Quality Zone, and Weak North–South Connectivity Zone across urban areas. The predominant landscape patches in Nanning are woodlands, croplands, and water bodies, with weak correlations between landscape area and importance indicators. Among landscape-type subgroups, woodlands and water bodies exhibit clear hierarchical structures, while grasslands show the least. Within community subgroups, spatial networks display characteristics such as modular communities, balanced communities, hub-node dominated communities, high clustering–low modularity networks, and small-world networks. The Ecological Integrity (EI) index for water corridors is significantly higher than for other elements.

Conclusion

This study proposes a river valley ecological paradigm, offering valuable insights for constructing ecological security patterns in cities with similar valley types globally.