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德州市农业气象灾害特征与区域分布

         

摘要

利用德州市1978~2013年灾情普查数据以及农作物总播种面积资料,对主要农业气象灾害变化特征及在各区域的分布进行了分析。结果表明:(1)农业气象灾害造成的农作物成灾面积在20世纪80年代末、90年代初数值较大,其余时段较小,且年际波动大。(2)干旱、暴雨洪涝和风雹是德州市三类主要气象灾害,各类农业气象灾害比重的年际变化也较大。(3)从变化趋势来看,干旱、风雹、低温冻害成灾面积呈现下降趋势,暴雨洪涝呈上升趋势,且上升趋势明显。(4)在区域分布方面,旱灾乐陵市最为严重,平原、庆云县次之;洪涝灾情齐河县最为严重,平原、庆云县次之;风雹灾情分布各区域差异较小,相对而言,夏津县最为严重,乐陵、庆云次之;庆云县虫害灾情最为严重,宁津、平原连阴雨灾害严重,其余县市成灾较小,有的县市几乎为零。%The change characteristics of main agro -meteorological disasters and their distribution in dif-ferent regions were analyzed based on the statistic data of disaster survey and total sowing area in Dezhou City of Shandong Province from 1 978 to 201 3.The results showed that:(1 )The disaster -suffering area of crops caused by agro -meteorological disasters was bigger in the late 1 980’s to the early 1 990’s,the rest time was smaller,and there was a notable interannual fluctuation.(2)Drought,flood and wind -hailstone were the main three kinds of meteorological disasters,and the proportions of different agro -meteorological disasters had considerable interannual fluctuations.(3)The disaster -suffering areas of drought,wind -hailstone and pest and frost injury had decreasing trends,and that of flood had an obvious increasing trend.(4)In the regional distribution,the most serious drought disaster was in Laoling,followed by Pingyuan and Qingyun;the most se-rious flood disaster was in Qihe,followed by Pingyuan and Qingyun;the regional differences of wind -hail-stone damage were small,among which,Xiajin’s damage was relatively the heaviest,followed by Laoling and Qingyun;the most serious insect pest was in Qingyun;continuous rain disaster was heavier in Ningjin and Pingyuan;the disasters in remaining counties were small,some closed to zero.

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