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水灾和旱灾是当今世界发生最频繁、对人类危害最大的自然灾害,其中以区域性的水旱灾害为多。为了抗御水旱灾害,减少灾害损失,需要我们迅速而准确地对灾害所造成的经济损失情况做出评估,作为组织实施抗灾救灾的决策依据。迅速而准确地评估一次水旱灾害的经济损失,需要科学的评估方法。目前,评估水旱灾害经济损失的方法主要有:1.概算法。概算法是根据一定数量的抽样调查,求出平均经济损失,而后按受灾总体进行整体估算。这种方法速度快,但准确程度较低。概算法具有整体性,但必须有调查的样本
Floods and droughts are the most frequent natural disasters that cause the greatest harm to human beings in the world today, of which there are more floods and droughts. In order to combat floods and droughts and reduce disaster losses, we need to quickly and accurately evaluate the economic losses caused by disasters as the basis for organizing the implementation of disaster relief and disaster relief. A quick and accurate assessment of the economic costs of floods and droughts requires a scientific assessment. At present, the methods for assessing economic losses caused by floods and droughts are as follows: 1. Estimation method is based on a certain number of sample surveys, find the average economic loss, and then the overall assessment of the overall disaster. This method is fast, but less accurate. The algorithm has the integrity, but there must be a sample of the survey