广东省重点易旱区干旱调查、风险评估与区划研究OA

From 2020 to 2022,Guangdong Province suffered from the most severe drought in nearly 60 years,and the situation of drought relief and water supply security was very serious.We conducted a detailed investigation of the drought history and current situation of 11 drought-prone counties by means of literature research,face-to-face interviews,evaluation analysis,case analysis,etc.A map of water supply works systems was drawn,based on which the water balance analysis was carried out and the water supply gap calculated.Moreover,drought risk zoning maps was drawn for the 11 drought-prone counties.Then several drought relief schemes were put forward to make water supply and demand balance.Finally,specific measures were put forward from the aspects of strengthening regional water security system,emergency project construction,drought-fighting team construction and intelligent drought-fighting technology.The result showed that the natural conditions of different districts of Guangdong province vary and the drought characteristics and drought resistance methods are regionalized Investigation and research work is conducive to finding the shortage of drought resistance and improving the regional water resources allocation system.This study explored and summarized the working patterns and theoretical methods of drought investigation,analysis and decision-making applicable to Guangdong Province,which may provide technical reference for related provinces and even the whole country.