宁都县常见气象灾害风险区划及成因对策分析

Risk Zoning of Common Meteorological Disasters in Ningdu County and Its Causes and Countermeasures

根据多年气象资料,基于ArcGIS技术对宁都县暴雨、干旱、低温、高温、雷电等5种常见气象灾害进行了风险程度区划,研究表明:这5种常见气象灾害在宁都县表现较为严重,其中以干旱灾害最为严重。成因分析发现暴雨灾害与宁都县独特的地形与地理位置有关,干旱灾害与降水因子密不可分,而高温和低温灾害分布则由太阳辐射的纬度差异决定,加之人类活动的影响形成。

Based on many years of meteorological data and ArcGIS technology,this paper divided the risk degree of five common meteorological disasters in Ningdu County,such as rainstorm,drought,low temperature,high temperature and lightning.The research showed that the five common meteorological disasters such as rainstorm,drought,low temperature,high temperature and lightning was more serious in Ningdu County,among which drought disaster was the most serious.The cause analysis showed that the rainstorm disaster was related to its unique terrain and geographical location,the drought disaster was inseparable from the precipitation factor,and the distribution of high and low temperature disasters was determined by the latitude difference of solar radiation and the influence of human activities.The research of this paper had a certain reference and guiding role for regional meteorological disaster prevention and reduction.