Vulnerability analysis of the impact of disaster causing rainstorm to agricultural production
Based on the meteorological data,rainstorm and flood disaster data and annual economic data of Qinghai Province from 2018 to 2022,the vulnerability of disaster causing rainstorm to agricultural production was analyzed by using correlation analysis,curve fitting and other methods.The results showed that the impact of disaster causing rainstorm on agricultural production in the study area was mainly concentrated in the Eastern part of Qinghai and the Eastern part of Haixi Prefecture.In recent five years(2018 to 2022),the most disasters occurred in 2022,the highest frequency occurred in August,and the duration of precipitation mostly not exceed 1 day;6 h,12 h and daily maximum precipitation were the main precipitation disaster causing factors that cause economic losses per unit area of crop rainstorm disasters in this area.When the disaster resistance capacity was consistent,the economic losses per unit area of crop rainstorm disasters gradually increase with the increase of precipitation.Due to the large error of the vulnerability curve of a single element,a multi element vulnerability curve of crop rainstorm disaster was selected:economic loss per unit area of crop rainstorm disaster=0.020 × 12 h maximum precipitation-0.146 × precipitation duration days+0.585.The curve could provide references for the disaster prediction of rainstorm and flood on agricultural production in the future.
NETL
NSTL
万方数据
