| In the context of global warming,the high-temperature disaster of various countries become more and more frequent, so the study of high-temperature disasters is becoming a hot spot all over the world. Currently, research scholars from various countries focused on the causes, impacts, and features of the high-temperature disasters, while the results of the research from the perspective of disaster risk are rare. As the center city of the upper reaches of the Yangtze River, Chongqing city is severely affected by hightemperature disaster, so the study on high-temperature disaster risk of Chongqing has a vital theoretical and practical significance.In this paper, we take the high-temperature data of six typical meteorological stations of Chongqing which is from the year 1964 to 2013 as the research object. The data is based on the Yearly High-temperature Day Series and Annual Extreme Hightemperature which is greater than or equal to 35 degrees. There are 33 meteorological stations’ high-temperature data from 2004 to 2013 of Chongqing which construct hightemperature disaster single observer and the model of high-temperature disaster risk assessment in the whole city. This paper includes high-temperature disaster Hazardous Classification and Temporal and Spatial Distribution in 2006, 2011, 2013 and between 2004 and 2013. It takes the economy, society, environment indexes related with hightemperature disaster vulnerability to analyze by Matter-Element Method. Meanwhile, it analyzes the vulnerability of Chongqing in 2013 and it gets vulnerability Spatial Distribution at every level. On the basis of analyzing the Chongqing’s climate characteristics of high-temperature, we analyzed the risk and vulnerability of Chongqing’s high temperature respectively. Combining these two aspects, we get the risk grading and spatial distribution of the high-temperature regions in Chongqing in 2013. Results of research are as follows:(1) The temperature in Chongqing City did not change so much during the first 30 years between 1964 and 2013.While compared with the fist 30 years, the hightemperature has a distinct increase between 1994 and 2003.During the year 2004 and 2013, it continues to heat up, and more rapidly. The highest temperature and high temperature days of the year 2006, 2011,2013 are the maximum during the 50 years between 1964 and 2013,and far more extreme than the annual maximum temperature and high temperature days in average during the 50 years.(2) we discover that the top three of high-temperature disaster risk index of Chongqing from high to low listed as 2006,2013,2011. From the perspective of space, Kai county, Yunyang county, Wushan county, Wanzhou district in northeastern of Chongqing,Fengdu country and Jiangjin district are the areas of high value of hightemperature disaster risk index. While the Xiushan country, Qianjiang district and Youyang county in southeast of Chongqing and Chengkou country Dianjiang country and Liangping country in north of Chongqing are the areas of low value of hightemperature disaster risk index.(3)There are 21 relatively vulnerable districts in 2013, accounting for 63.6% and most of them are located in urban function development area and urban developing areas.The other 12 regions are in relatively safe level, the majority of them are in the ecological conservation development areas of northeast Chongqing,the ecological conservation areas in southeast of Chongqing and urban functional core area.(4)There are 27 areas in Chongqing where the high-temperature are in the dangerous level of general high or high, accounting for 81.8%. While there are only six regions where the high-temperature dangerous level are in the safe or relatively safe level. Chengkou and Youyang lie in the low center of high-temperature disaster composite risk evaluation. |
