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Economic geography >

2023 , Vol. 43 >Issue 12: 192 - 203

DOI: https://doi.org/10.15957/j.cnki.jjdl.2023.12.019

Evolution of Ecological Security Pattern of Yangtze River Economic Belt and Its Multi-scenario Simulation

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  • 1. School of Environmental Studies,China University of Geosciences,Wuhan 430074,Hubei,China;
    2. Kanazawa University,Kanazawa 9201192,Ishikawa,Japan;
    3. School of Physical Education,China University of Geosciences,Wuhan 430074,Hubei,China;
    4. Hubei Institute of Land Surveying and Mapping,Wuhan 430010,Hubei,China;
    5. Shishou Municipal Bureau of Natural Resources and Planning,Shishou 434400,Hubei,China;
    6. Land Consolidation and Rehabilitation Center,Ministry of Natural Resources of the People's Republic of China,Beijing 100035,China

Received date: 2023-06-21

  Revised date: 2023-11-10

  Online published: 2024-03-29

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Abstract

This paper conducts a multi-scenario simulation of the ecological security pattern based on an analysis and simulation of the ecological elements of the Yangtze River Economic Belt in 2040 using the LUCC model and the MSPA-MCR method. The findings reveal that: 1) In 2020, the study area's current ecological elements are dominated by forest land (1052086 km2) and arable land (667456 km2), and the structural change of these elements is manifested by the continual decrease of grassland,water,and arable land, and the small increase of forest land. The change areas are mainly located in the upper reaches of Sichuan-Tibet area,Hengduan Mountains area, Qinba Mountains area,the middle and lower reaches of Wuling Mountains area,Huangshan area and the lower reaches of Yangtze River plain. 2) The area and spatial characteristics of ecological elements in 2040 are significantly different under different scenarios. The total area of ecological elements increases only under the production priority scenario and decreases under the other four scenarios. The expansion of ecological elements primarily takes place in the transition zone of different elements,while the shrinkage of ecological elements primarily takes place in the interface zone of construction land and ecological land. 3) 30 significant ecological source regions which have a combined area of 352573 km2 and an average connectedness of 3.77 connect 69 ecological corridors,with an average length of around 260 km. Significant biological source regions mainly consist of forestland and grassland,which shows the big-block cluster distribution characteristic in the upper reaches of Yangtze River Economic Belt and the small-block cluster distribution characteristic in the middle and lower reaches of Yangtze River Economic Belt. 4) The ecological priority scenario and the integrated optimization scenario will result in a more complex ecological network,better connectivity of ecological sources and a healthier and more stable ecosystem pattern in the study area.

Key words： mountain,river,forest,farmland,lake and grassland; ecological element; ecological security pattern; ecological source region; connectivity; multi-scenario simulation; Yangtze River Economic Belt

Cite this article

LIU Xiaoqiong, HE Pengfei, HAN Jicai, XIAO Hao, WANG Yingnan . Evolution of Ecological Security Pattern of Yangtze River Economic Belt and Its Multi-scenario Simulation[J]. Economic geography, 2023 , 43(12) : 192 -203 . DOI: 10.15957/j.cnki.jjdl.2023.12.019

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