Typhoon hazard assessment of late rice in Guangdong Province based on comprehensive wind and rain intensity index
Based on typhoon process data that made landfall or affected in central and southern Guangdong,wind speed and rainfall data from meteorological stations,record of late rice yield of these cities from 1995 to 2022,a calculation model for yield reduction rate of late rice and a typhoon hazard assessment model of late rice by integrating the wind and rain factors were built to evaluate typhoon hazard of late rice in the 16 cities in the south-central Guangdong Province.The results show that:(1)on average,6.6 typhoons make landfall or affect the central and southern regions of Guangdong Province each year from 1995 to 2022 with a fluctuating decreasing trend at the rate of 0.8 typhoon per decade.(2)The calculation model for yield reduction rate of late rice and the typhoon hazard assessment model of late rice can reflect the reduction of late rice yield and typhoon-induced disasters in various cities,especially in the years of severe typhoon disasters such as 2002,2013,2017,and 2018,which perform exceptionally well.(3)The impact of typhoons on late rice production varies in different cities,with Zhanjiang,Yangjiang,Jiangmen,Zhongshan,Zhuhai,and Shanwei as high-risk areas for typhoon hazard of late rice,Maoming,Foshan,Huizhou,Jieyang,Shantou,and Chaozhou as medium-risk areas,and Yunfu,Zhaoqing,Guangzhou,and Dongguan as low-risk areas.
late riceyield reduction ratetyphoonhazardGuangdong Province
万方数据
维普
