【摘要】 利用约2000个中国自然灾害记录,我们计算分析得到了中国自然灾害的统计规律,它们可总结为:1.中国的灾害可以以胡焕庸线和34°N为界划分为西域、北域、南域三个区,并且沿胡线可能存在过渡带区域;2.中国自然灾害的月特征是旱灾主要发生于3-10月,洪涝主要发生于6-9月;3.灾害的最频发区位于黄淮海地区。更多还原

【Abstract】 About 2000 records of larger natural disaster in China are collected, with a computation and analysis, the statistical charateristics of natural disasters in China (CND) were discovered. These charateristics are following: 1. Chinese territory is divided into 3 subregions, West-territory, North-territory and South-territory; Hu-line (Hu Population Line) and 34°N bounded these 3 subregions, respectively. But a sub-territory of CND may exited alongside Hu Line. 2. The ac- tions of CND show clear monthly variation during last 40 years. The drought acts in March -October, the flood-waterlogging damage acts in June-September. 3. The most frequence area of natural disaster locates in Huang-Huai-Hai area.更多还原