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The Response of Rocky Desertification to the Development of Road Networks in Karst Ecologically Fragile Areas

Author

Listed:
  • Shiwen Zhang

    (College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China)

  • Yan Wang

    (College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China
    Key Laboratory of Ecological Environment Evolution and Pollution Control in Mountainous Rural Areas of Yunnan Province, Kunming 650224, China)

  • Chengrong Li

    (Key Laboratory of Ecological Environment Evolution and Pollution Control in Mountainous Rural Areas of Yunnan Province, Kunming 650224, China
    College of Forestry, Southwest Forestry University, Kunming 650224, China)

  • Yang Wu

    (College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China)

  • Yuhang Yin

    (College of Ecology and Environment, Southwest Forestry University, Kunming 650224, China)

  • Chao Zhang

    (Key Laboratory of Ecological Environment Evolution and Pollution Control in Mountainous Rural Areas of Yunnan Province, Kunming 650224, China
    College of Forestry, Southwest Forestry University, Kunming 650224, China)

Abstract

Frequent cross-regional communication makes road networks increasingly dense and has generated prominent human interference, thus resulting in the destruction of the landscape’s integrity and leading to changes in the functional processes of the habitat. In order to discuss the impacts of intense human activity brought by the road networks on the rocky desertification landscape and habitat quality in karst ecologically fragile areas, taking the road networks as the humans activity intensity factor, a quantitative analysis was conducted to analyze the impacts of road networks on the spatial evolution of the rocky desertification landscape and changes in regional habitat quality characteristics under different development modes in the study area based on a landscape pattern gradient method, spatial analysis, and INVEST model. The results showed that: (1) in the study area, due to the destruction of landscape integrity caused by the development of the road networks over the past 17 years, the landscape pattern of rocky desertification tended to be fragmented and complex, first showing an inclination for rapid fragmentation and then gradual recovery later. (2) The land-use intensity and degree of rocky desertification in the industrial areas and in the tourist areas of the study area have increased to varying degrees over the past 17 years, as is seen mainly via the expansion of construction land, cultivated land enclaves in the urban expansion areas, and new development areas. (3) Unders different regional models, the fragmentation of the rocky desertification landscape in the industrial areas was higher than that in the tourist areas, resulting in a significantly lower habitat quality and obvious degrees of degradation. The research findings provide the basis for further deepening our understanding how human activity intensity affects the evolution of the regional landscape, including the development of rocky desertification, the supply of services, and supporting habitat conservation in karst ecologically fragile areas.

Suggested Citation

  • Shiwen Zhang & Yan Wang & Chengrong Li & Yang Wu & Yuhang Yin & Chao Zhang, 2023. "The Response of Rocky Desertification to the Development of Road Networks in Karst Ecologically Fragile Areas," IJERPH, MDPI, vol. 20(4), pages 1-20, February.
    • Handle: RePEc:gam:jijerp:v:20:y:2023:i:4:p:3130-:d:1064540
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    References listed on IDEAS

    as
    1. Shiwen Zhang & Yan Wang & Xuehua Wang & Yang Wu & Chengrong Li & Chao Zhang & Yuhang Yin, 2022. "Ecological Quality Evolution and Its Driving Factors in Yunnan Karst Rocky Desertification Areas," IJERPH, MDPI, vol. 19(24), pages 1-19, December.
    2. Yang, Jiawen & Quan, Jige & Yan, Bin & He, Canfei, 2016. "Urban rail investment and transit-oriented development in Beijing: Can it reach a higher potential?," Transportation Research Part A: Policy and Practice, Elsevier, vol. 89(C), pages 140-150.
    3. Xiaowei Tong & Martin Brandt & Yuemin Yue & Stephanie Horion & Kelin Wang & Wanda De Keersmaecker & Feng Tian & Guy Schurgers & Xiangming Xiao & Yiqi Luo & Chi Chen & Ranga Myneni & Zheng Shi & Hongso, 2018. "Increased vegetation growth and carbon stock in China karst via ecological engineering," Nature Sustainability, Nature, vol. 1(1), pages 44-50, January.
    4. Xuesong Zhang & Zijin Xu, 2021. "Functional Coupling Degree and Human Activity Intensity of Production–Living–Ecological Space in Underdeveloped Regions in China: Case Study of Guizhou Province," Land, MDPI, vol. 10(1), pages 1-13, January.
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