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Risk Assessment of World Corn Salinization Hazard Factors Based on EPIC Model and Information Diffusion

Author

Listed:
  • Degen Lin

    (School of Business, Wenzhou University, Wenzhou 325000, China)

  • Chuanqi Hu

    (Northwest Institute of Historical Environment and Socio-Economic Development, Shaanxi Normal University, Xi’an 710119, China)

  • Fang Lian

    (Integrated Research on Disaster Risk (IRDR) International Programme Office, Beijing 100094, China)

  • Jing’ai Wang

    (Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China
    State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China
    Academy of Plateau Science Sustainability, The People’s Government of Qinghai Province and Beijing Normal University, Xining 810016, China)

  • Xingli Gu

    (College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China)

  • Yingxian Yu

    (School of Business, Wenzhou University, Wenzhou 325000, China)

Abstract

Salinization is a serious land degradation phenomenon. This study identified the salinity stress threshold as a causal factor for salinization, focusing on global maize fields as the study area. By excluding environmental stressors and setting salinization scenarios, the EPIC model was used to simulate the daily salinity stress threshold during the corn growth process. The global intensity and risk of salinization-induced disaster for maize were evaluated. Based on the principle of information diffusion, the intensity of salinization-induced disaster was calculated for different return periods. The main conclusions were as follows: (1) By excluding environmental stress factors and setting salinization scenarios, algorithms for the salinization index during the growing season and the intensity of salinization-induced disaster were proposed. (2) The salinity hazard factor is highly risky and concentrated in arid and semi-arid regions, while it is relatively low in humid regions. (3) As the recurrence period increases, the risk of salinization-induced hazard becomes higher, the affected area expands, and the risk level increases. (4) The salinization intensity results of this study are consistent with the research results of HWSD (R 2 = 0.9546) and GLASOD (R 2 = 0.9162).

Suggested Citation

  • Degen Lin & Chuanqi Hu & Fang Lian & Jing’ai Wang & Xingli Gu & Yingxian Yu, 2023. "Risk Assessment of World Corn Salinization Hazard Factors Based on EPIC Model and Information Diffusion," Land, MDPI, vol. 12(11), pages 1-19, November.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:11:p:2076-:d:1283011
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    References listed on IDEAS

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