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一、长江流域水灾与受灾面积长江流域资源丰富,长江中下游是我国经济文化的发达地区。但长江流域水灾频繁,致使人民生命财产受到了巨大威胁。对长江流域水灾进行研究掌握其规律,准确地预报已成为当今的重要课题。水灾受灾面积是水灾重要的定量描述指标。根据所获得这一指标的历
I. Floods and Affected Areas in the Yangtze River Basin The Yangtze River Basin is rich in resources and the middle and lower reaches of the Yangtze River is a developed area of China’s economy and culture. However, frequent floods in the Yangtze River Basin have caused great threats to people’s lives and property. To study the law of the floods in the Yangtze River basin and accurately forecast it has become an important issue today. Flood affected area is an important quantitative description of floods. Based on the calendar of this indicator