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《Geographical Research》 2003-05
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On season risk of the prevalence of SARS in China

WANG Zheng 1,2 , CAI Di, LI Shan, ZHENG Yi ping, WANG Ying, WU Bing, LI Hua qun, CHEN Jian guo (1 Geo information Key Laboratory, ECNU, Shanghai 200062, China; 2 Policy and Management Institute,CAS, Beijing 100080, China)  
This paper conducts a statistical analysis of the climate characters of SARS epidemic area during the epidemic disease prevalence period, 2003 Based on the analysis, it puts forward the climate risk as a foundation of the seasonal risk estimation of the prevalence of SARS and estimates the risk of the main cities in China. The results are shown in Figs. 4-7 With these figures, we found that not all the areas reach the highest risk in winter; several conclusions are drawn about epidemic law As to the climate risk, SARS tends to prevail in most provinces in China during the Chinese season of spring and autumn; however area south to the tropic of cancer will reach a high risk during the Chinese season of winter But all of them will turn to be much safer in summer In month when SARS is in its prevalence, the disease outbreak is relative with the particular weather conditions, that atmospheric inversion is liable to occur SARS tends to prevail in climate area where atmospheric inversion is easy to find Generally, lower air pollution index and higher ultraviolet radiation will prevent SARS from being epidemic; the threshold value of the air pollution index is found to be 70 with some observed data Therefore on Qinghai Tibet Plateau, Yunnan Guizhou Plateau and Hainan Island the SARS has lower risk to outbreak
【Fund】: 国家自然科学基金应急资助 (4 0 345 0 0 4 ) ;; 中科院政策与管理研究所所长基金应急资助 ;; 上海市科委 资助 (0 3dz1 96 1 2 ) ;; 上海重中之重学科建设成果
【CateGory Index】: R181.3
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