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Impacts of Urban Expansion on the Loss and Fragmentation of Cropland in the Major Grain Production Areas of China

Author

Listed:
  • Zifeng Yuan

    (Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China)

  • Liang Zhou

    (Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China
    Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
    Key Laboratory of Urban Land Resources Monitoring and Simulation, Ministry of Natural Resources, Shenzhen 518034, China
    National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring, Lanzhou 730070, China)

  • Dongqi Sun

    (Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

  • Fengning Hu

    (Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China
    Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou 730070, China)

Abstract

The continuous expansion of urban land has led to massive encroachment upon cropland. To examine the impacts of urban expansion on the loss and fragmentation of cropland in China’s nine major grain production areas (MGPAs), we used standard deviation ellipse, land use transfer matrix, land use dynamic degree, and landscape metric to explore the spatio-temporal evolutions, mutual transfer, and landscape patterns of cropland and urban land. The results show the following: (1) From 1995 to 2018, the areas of cropland in MGPAs showed a trend of “short-term increase—long-term decrease—short-term increase”, while that of urban land grew continuously; (2) Urban expansion is the main cause of cropland loss. The cropland area converted to urban land accounts for a large proportion (49.26%) of the total transfer of cropland to other land types, especially in the densely populated, rapidly urbanizing and industrializing Taihu Lake Plain, Jianghuai Region, and Pearl River Delta; (3) In most MGPAs, urban expansion has led to fragmentation of cropland, especially in the Pearl River Delta, as indicated by the significant change of patch density. However, in the Sanjiang Plain and Songnen Plain, a less pronounced or even reduced cropland fragmentation was observed due to the significant conversion of other land types to cropland under specific land policies. From these results, we suggest that the government should regulate the encroachment of urban land on cropland and the transfer of natural land to it, and encourage the rural land consolidation to increase the cropland.

Suggested Citation

  • Zifeng Yuan & Liang Zhou & Dongqi Sun & Fengning Hu, 2022. "Impacts of Urban Expansion on the Loss and Fragmentation of Cropland in the Major Grain Production Areas of China," Land, MDPI, vol. 11(1), pages 1-15, January.
  • Handle: RePEc:gam:jlands:v:11:y:2022:i:1:p:130-:d:725124
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    References listed on IDEAS

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    1. Liqun Sun & Ji Chen & Qinglan Li & Dian Huang, 2020. "Dramatic uneven urbanization of large cities throughout the world in recent decades," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    2. Xiaoyan Li & Gulinaer Suoerdahan & Zhenyu Shi & Zihan Xing & Yongxing Ren & Ran Yang, 2021. "Spatial–Temporal Impacts of Urban Sprawl on Ecosystem Services: Implications for Urban Planning in the Process of Rapid Urbanization," Land, MDPI, vol. 10(11), pages 1-17, November.
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    Cited by:

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    2. Lin Meng & Wentao Si, 2022. "The Driving Mechanism of Urban Land Expansion from 2005 to 2018: The Case of Yangzhou, China," IJERPH, MDPI, vol. 19(23), pages 1-14, November.
    3. Jianhui Dong & Wenju Yun & Kening Wu & Shaoshuai Li & Bingrui Liu & Qiaoyuan Lu, 2023. "Spatio-Temporal Analysis of Cultivated Land from 2010 to 2020 in Long’an County, Karst Region, China," Land, MDPI, vol. 12(2), pages 1-22, February.
    4. Yongxin Liu & Yiting Wang & Yiwen Lin & Xiaoqing Ma & Shifa Guo & Qianru Ouyang & Caige Sun, 2023. "Habitat Quality Assessment and Driving Factors Analysis of Guangdong Province, China," Sustainability, MDPI, vol. 15(15), pages 1-23, July.
    5. Razzaq, Asif & Sharif, Arshian & Yang, Xiaodong & Dogan, Eyup, 2024. "Influence mechanism of electricity price distortion on industrial green transformation: A spatial analysis of Chinese regions," Energy Economics, Elsevier, vol. 130(C).
    6. Mengxue Liu & Xiaobin Dong & Xuechao Wang & Bingyu Zhao & Hejie Wei & Weiguo Fan & Chenyang Zhang, 2022. "The Trade-Offs/Synergies and Their Spatial-Temporal Characteristics between Ecosystem Services and Human Well-Being Linked to Land-Use Change in the Capital Region of China," Land, MDPI, vol. 11(5), pages 1-22, May.

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