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Spatio-Temporal Evolution Characteristics of Land Consolidation in the Coastal Regions: A Typical Case Study of Lianyungang, China

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  • Qiaochu Liu

    (School of Public Policy and Management, China University of Mining and Technology, Xuzhou 221116, China
    Land Consolidation Center of Lianyungang City, Lianyungang 222002, China)

  • Yonghu Fu

    (School of Humanities and Law, Jiangsu Ocean University, Lianyungang 222005, China)

  • Gan Teng

    (School of Public Policy and Management, China University of Mining and Technology, Xuzhou 221116, China)

  • Jianyuan Ma

    (School of Public Policy and Management, China University of Mining and Technology, Xuzhou 221116, China)

  • Yu Yao

    (State-Owned Land Reserve Center of Lianyungang City, Lianyungang 222002, China)

  • Longqian Chen

    (School of Public Policy and Management, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

Understanding the spatio-temporal evolution of land consolidation is essential for optimizing regional land resource allocation and mitigating human–land conflicts during socio-economic development. This study introduced a novel framework for analyzing such patterns in China. Utilizing a two-decade (2002–2022) prefecture-level city dataset of land consolidation projects in Lianyungang, Jiangsu Province, we developed a “land consolidation intensity” metric and applied quantitative techniques—including land use transfer matrices, landscape pattern indices, Sankey diagrams, and standard deviation ellipses—to assess spatio-temporal dynamics and centroid shifts. Key findings included: (1) Land consolidation intensity exhibited distinct stages, evolving from initial development to rapid growth and eventual stabilization, closely aligning with national policy shifts. (2) The primary sources for supplemented cultivated land were ponds, rivers, and tidal flats, followed by grassland, construction land, and forest land, with cultivated land consistently dominating the consolidated landscape. (3) Land consolidation projects distribution concentrated in economic and political centers, with a spatial shift from inland western region towards the eastern coastal region. (4) Gray relational analysis identified economic development as the predominant driver, with policy and social factors providing secondary guidance. This research elucidates the spatio-temporal evolution characteristics of land consolidation at the prefecture-level city and demonstrates the utility of the proposed framework for similar analyses, offering insights relevant to national land use planning and policy formulation.

Suggested Citation

  • Qiaochu Liu & Yonghu Fu & Gan Teng & Jianyuan Ma & Yu Yao & Longqian Chen, 2025. "Spatio-Temporal Evolution Characteristics of Land Consolidation in the Coastal Regions: A Typical Case Study of Lianyungang, China," Land, MDPI, vol. 14(9), pages 1-23, August.
    • Handle: RePEc:gam:jlands:v:14:y:2025:i:9:p:1776-:d:1738853
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