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Landscape Changes and Optimization in an Ecological Red Line Area: A Case Study in the Upper Reaches of the Ganjiang River

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  • Guangxu Liu

    (School of Geography and Environmental Engineering, Gannan Normal University, Ganzhou 341000, China)

  • Aicun Xiang

    (School of Geography and Environmental Engineering, Gannan Normal University, Ganzhou 341000, China)

  • Yimin Huang

    (School of Geography and Environmental Engineering, Gannan Normal University, Ganzhou 341000, China)

  • Wen Zha

    (School of Geography and Environmental Engineering, Gannan Normal University, Ganzhou 341000, China)

  • Yaofang Chen

    (School of Geography and Environmental Engineering, Gannan Normal University, Ganzhou 341000, China)

  • Benjin Mao

    (School of Geography and Environmental Engineering, Gannan Normal University, Ganzhou 341000, China)

Abstract

The key to optimizing ecological management is to study the spatial configuration of the landscape and the dynamic changes and their driving mechanisms at the landscape scale. The ecological red line area in the hilly area of the upper reaches of the Ganjiang River was chosen as the research area in this study. Based on the theory of landscape ecology and the evolution of biological communities, a multiscale coupling model was adopted and combined with remote sensing (RS) and geographical information system (GIS) technologies to systematically study the evolution of key landscape ecosystems such as forests, patch characteristics, and changes in diversity. The study revealed that: (1) forests represented the largest proportion in the study area, followed by croplands and grasslands; (2) the biological community tended to progress toward climax between 1986 and 1995, but then it moved toward regressive successions between 1995 and 2005 before recovering; (3) the study area was characterized by a high proportion of dominant ecosystems, most of which were at their climax with stable ecological species groups, and which were connected by ecological corridors; and (4) during the period from 1995 to 2010, most landscapes showed a trend of fragmentation. However, during the period from 2010 to 2018, the forest patches were gradually connected. The proportion of dominant landscapes increased, and the landscape uniformity was reduced. Based on the findings, we proposed an ecosystem management strategy that includes strengthening crop management, focusing on the natural restoration of the ecosystems and the cultivation of large patches, exploring disturbances due to mining activities, and applying methods to mitigate damage to and optimize the ecosystem.

Suggested Citation

  • Guangxu Liu & Aicun Xiang & Yimin Huang & Wen Zha & Yaofang Chen & Benjin Mao, 2022. "Landscape Changes and Optimization in an Ecological Red Line Area: A Case Study in the Upper Reaches of the Ganjiang River," IJERPH, MDPI, vol. 19(18), pages 1-19, September.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:18:p:11530-:d:913854
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    References listed on IDEAS

    as
    1. Xu, Xibao & Tan, Yan & Yang, Guishan & Barnett, Jon, 2018. "China’s ambitious ecological red lines," Land Use Policy, Elsevier, vol. 79(C), pages 447-451.
    2. Tao Wu & Peipei Zha & Mengjie Yu & Guojun Jiang & Jianzhen Zhang & Qinglong You & Xuefeng Xie, 2021. "Landscape Pattern Evolution and Its Response to Human Disturbance in a Newly Metropolitan Area: A Case Study in Jin-Yi Metropolitan Area," Land, MDPI, vol. 10(8), pages 1-18, July.
    3. Yang Bai & Christina P. Wong & Bo Jiang & Alice C. Hughes & Min Wang & Qing Wang, 2018. "Developing China’s Ecological Redline Policy using ecosystem services assessments for land use planning," Nature Communications, Nature, vol. 9(1), pages 1-13, December.
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