It is a significant way to update risk zoning maps of natural disasters by weighted processing of new observations and original risk zoning maps in the case of original data unavailable. This paper chooses typhoonrainstorms occurred in Guangdong Province as a case to demonstrate how to update risk zoning maps by using the updating model of weighted processing. This case shows that we can satisfactorily update risk zoning maps of natural disasters by weighted processing of new observations and original data if we use the same theory of risk zoning.%在缺失原始资料情况下,通过加权处理旧区划图和新的资料,是区划图更新的一个重要途径.以广东省台风暴雨灾害为例,说明如何应用加权更新模型进行区划图更新,并对其进行了检验.实例证明,在原区划理论和方法不变的情况下,通过加权处理新旧资料,可以满意地更新自然灾害风险区划图.
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