Over the past 25 years, an annual average of 6 to 7 tropical cyclones (TCs) made landfall onChina mainland and Hainan Island with an average intensity of 29.9 m/s at landfall and maintained at leasttropical storm inte...Over the past 25 years, an annual average of 6 to 7 tropical cyclones (TCs) made landfall onChina mainland and Hainan Island with an average intensity of 29.9 m/s at landfall and maintained at leasttropical storm intensity for 15.6 hours over land, leading to 505 deaths and 37 billion yuan in directeconomic loss, which accounted for 0.4% of the annual GDP of China. Although there was little change inthe overall landfall frequency, intensity at landfall and overland duration, the annual total direct economicloss increased significantly due to the rapid economic development over the past 25 years. Under globalwarming, the intensity of TCs that made landfall on Hainan decreased but the overland duration andfrequency of TCs that made landfall on Fujian and Zhejiang increased. At the national and provincial levels,the ratio of the direct economic loss to GDP and casualties caused by landfall tropical cyclones decreased,suggesting the effectiveness of disaster prevention and reduction in China.展开更多
基金National Key Technology Research and Development Program of China(2007BAC29B02)National Basic Research Program of China(2009CB421503)+1 种基金National Natural Science Foundation of China(40875038)Social Commonweal Research Program of the Ministry of Science and Technology of China(GYHY200806009)
文摘Over the past 25 years, an annual average of 6 to 7 tropical cyclones (TCs) made landfall onChina mainland and Hainan Island with an average intensity of 29.9 m/s at landfall and maintained at leasttropical storm intensity for 15.6 hours over land, leading to 505 deaths and 37 billion yuan in directeconomic loss, which accounted for 0.4% of the annual GDP of China. Although there was little change inthe overall landfall frequency, intensity at landfall and overland duration, the annual total direct economicloss increased significantly due to the rapid economic development over the past 25 years. Under globalwarming, the intensity of TCs that made landfall on Hainan decreased but the overland duration andfrequency of TCs that made landfall on Fujian and Zhejiang increased. At the national and provincial levels,the ratio of the direct economic loss to GDP and casualties caused by landfall tropical cyclones decreased,suggesting the effectiveness of disaster prevention and reduction in China.
