黑龙江省夏季旱涝低温灾害风险区划

Risk zoning of drought/flood and low temperature disasters in Heilongjiang Province in summer

利用黑龙江省81个站夏季6-8月的气温、降水资料,计算了其变异系数,并进行了正态化处理,求得了Z指数。确定了重旱、轻旱、重涝轻涝和特低、偏低、温度指标,求出了其发生概率,对所得结果进行了灾害风险3级区划,即大、中、小风险区划;另外,还进行了黑龙江全省的主旱区和主涝区区划。

Using the summer data on air temperature and precipitation from 81 stations in Heilongjiang Province, this paper calculates their coefficient of variation, conducts normalization processing and obtains ＂Z＂ index. The indices for sever and light drought, flood and low temperature were determined and their occurrence probabilities were find out. The result was used to classify the disaster risk into 3 degrees. The zoning of main drought/flood area in whole province were also carried out.