湖南省水稻生产干旱灾害风险区划

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、承灾体的脆弱性等方面选取灾害频率、灾害受灾率、灾害强度、水稻生产水平等评价因子,利用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软件给出了湖南水稻生产干旱灾害风险区划。结果表明,湖南南部和怀化的辰溪、靖州、通道为湖南中、晚稻生产干旱灾害中高风险区,其它大多数地区为干旱灾害低风险区或轻微风险区。

Risk Division of Drought Disaster for Rice Production in Hunan Province

The evaluation model on drought disasters for middle and later rice in Hunan province was established by using the human survival environmental risk assessment method,based on the factors,such as the frequency of disasters,the area and the intensity of disasters and rice production.Furthermore,risk division on drought disasters for rice production in Hunan province was conducted by using GIS technology.The results showed that the high risk region was south Hunan and Huaihua region,and others were low or slight risk region.