湖南水稻生产旱灾风险区划研究

Study on the Risk Regionalization of Drought Disaster for Rice Production in Hunan Province

以湖南中、晚稻生产干旱灾害为研究对象,从水稻干旱灾害发生的可能性、成灾环境、成灾体的脆弱性等方面选取灾害频率、灾害范围、灾害强度、社会经济等评价因子,根据人类生存环境风险评价法,建立了湖南中、晚稻生产干旱灾害评价模型,应用GIS技术给出了湖南水稻生产干旱灾害风险区划。

Taking the drought disaster for middle-season rice and later-season rice production in Hunan Province as an example, the evaluation factors such as the frequency of disasters, the area and the intensity of disasters, society economy were selected from the aspects of the occurring probability of disasters, the forming background of disasters and the vulnerability of stricken objects. According to the risk estimation method of human survival circumstance, the model of drought disasters estimation which applied in middle-season rice and later-reason rice production in Hunan Province was established. The risk regionalization of drought disasters for rice production in Hunan Province was attained by applying GIS technique.