Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (10): 101-112.doi: 10.11924/j.issn.1000-6850.casb2022-0276

Special Issue: 农业气象

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Risk Assessment and Zoning of Drought Disasters in Shandong Province

CHU Yue1(), XUE Xiaoping2, ZHANG Lijuan1(), HUANG Yutao1, WANG Nan1, WANG Nan1, JIANG Meiyi1, WANG Yumeng1, GUO Xihui1, YANG Yiping1, ZHAO Yufeng1, ZHAO Enbo1   

  1. 1 Key Laboratory of Geographic Environment Monitoring and Spatial Information Service in Cold Regions of Harbin Normal University, Heilongjiang Province, Harbin 150025
    2 Shandong Climate Center, Jinan 250031
  • Received:2022-04-08 Revised:2023-06-08 Online:2023-04-05 Published:2023-03-27

Abstract:

As a major agricultural province in China, Shandong is one of the most important grain-producing areas in the country. The province is affected by the monsoon climate and is prone to drought disaster. Therefore, the disaster risk assessment and zoning of drought in Shandong Province can prevent drought disasters more scientifically, which is of certain guiding significance to improving drought disaster risk management, enhancing decision-making and reducing economic losses. Based on the principle of natural disaster risk assessment, this paper used the basic data of meteorology, soil and topography, and high-precision data of land use type and normalized differential vegetation index in Shandong, adopted the methods of weighted comprehensive evaluation and analytic hierarchy process, as well as GIS spatial analysis technology, to assess and zone the risk of drought. The results showed that the risk of drought in Shandong was high, areas with medium and high risk accounted for 59.40% of the total, and the high risk areas were mainly located in the northwestern part of Shandong and the eastern part of Jiaodong peninsula. The exposure of disaster-bearing bodies was high, areas with medium and high exposure accounted for 70.66% of the total, and the high exposure areas were mainly located in the western and southern parts of Shandong, and some areas in the central part were also highly exposed. The vulnerability of disaster-bearing bodies was slightly high, areas with medium and high vulnerability accounted for 48.1% of the total, and high vulnerability areas were mainly located in the southwestern part of Shandong. The disaster prevention and mitigation capacity of Shandong was strong, areas with medium and high disaster prevention and mitigation capacity accounted for 50.87% of the total, and areas with high disaster prevention and mitigation capacity were mainly located in the Jiaodong peninsula and some areas in the north of the province. The comprehensive risk of drought in Shandong was high, areas with medium and high comprehensive risk accounted for 54.04% of the total, and mainly located in the western and central parts of Shandong, and the eastern part of the province had relatively low comprehensive risk of drought.

Key words: drought disaster, risk zoning, principles of disaster risk assessment, analytic hierarchy process, Shandong Province