中国农业气象

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基于信息扩散法的湖南水稻生产水灾风险评估

罗伯良;张超;黄晚华;   

  1. 湖南省气象科学研究所;
  • 出版日期:2009-06-10 发布日期:2009-06-10
  • 基金资助:
    中国气象局项目(CMATG2008M45)“水稻气象灾害精细化风险区划技术研究”

Flooding Risk Assessment of Rice Production Based on Information Diffusion in Hunan Province

LUO Bo-liang,ZHANG Chao,HUANG Wan-hua(Institute of Meteorology in Hunan Province,Changsha 410007,China)   

  • Online:2009-06-10 Published:2009-06-10

摘要: 利用1987-2006年湖南省水稻播种面积、水灾成灾面积数据资料,基于模糊数学和信息扩散理论,以县为单位,计算了湖南各地水稻生产遭受水灾的风险概率,运用GIS技术得到了水稻生产水灾风险评估及其区划。结果表明,各风险水平下湖南水稻生产遭受水灾的概率总体上北部大于南部,这对提高社会公众对水稻生产中水灾的防灾减灾意识和因地制宜调整农业生产结构有指导意义。

关键词: 信息扩散法, 水稻生产, 水灾, 风险评估

Abstract: Based on the statistical data of rice planting area and flooding damaged area during the period of 1987-2006 in Hunan Province,the probability of flooding risk of rice production was calculated by using the theory of the fuzzy Mathematics and information diffusion. The flooding risk assessment of rice production and its regionalization were obtained based on GIS. The results showed that the probability of flooding risk of rice production decreased at the different risk grades from the North to the South of Hunan Province. Therefore,the conclusion would give direction in enhancing the awareness of the public to prevent and mitigate disasters,and adjusting the agricultural production structure.

Key words: Information Diffusion, Information Diffusion, Rice production, Flooding, Risk assessment