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湖南四水流域洪涝灾害特性与减灾战略
引用本文:李景保,喻小红,金涛.湖南四水流域洪涝灾害特性与减灾战略[J].水土保持通报,2002,22(5):57-60.
作者姓名:李景保  喻小红  金涛
作者单位:湖南师范大学,资源与环境科学学院,湖南,长沙,410081
基金项目:湖南省教育厅资助(26000512)
摘    要:湖南湘资沅澧四水均属山区暴雨型河流 ,汛期洪涝灾害频发。通过对四水流域近数 10 a洪涝灾害资料分析表明 :洪涝灾害发生频率高 ,且具有多发性、共生性与地域差异性的整体特征。在时间分布上呈现明显的季节性、连年性和循环周期性 ;在空间分布上 ,中上游山丘区山洪灾害频发 ,中下游河谷平原洪涝灾害交织 ,下游尾闾洪溃涝渍灾害并发。随着时间的演进 ,洪涝灾损和发生频率均呈明显的增大趋势 ,据此提出了减灾战略以减轻洪涝灾害损失。

关 键 词:洪涝灾害  整体特征  生成规律  四水流域
文章编号:1000-288X(2002)05-0057-04
收稿时间:2002/1/25 0:00:00
修稿时间:2002年1月25日

Integrate Characteristics and Flood Disasters Reduction Strategy in Xiang, Zi, Yuan and Li River Valley
LI Jingbao,YU Xiaohong and JIN Tao.Integrate Characteristics and Flood Disasters Reduction Strategy in Xiang, Zi, Yuan and Li River Valley[J].Bulletin of Soil and Water Conservation,2002,22(5):57-60.
Authors:LI Jingbao  YU Xiaohong and JIN Tao
Abstract:Xiangjiang, Zishui, Yuanjiang and Lishui, flowing in mountainous region, are heavy rain rivers with frequently occurring flood water logging disasters. Based on analyzing the data of flood disasters in about ten years, some conclusions about integrate features of the flood water logging disasters are got as follows: high frequency, simultaneously occurrence and regional difference. In temporal distribution, the flood represents seasonal, annual and periodical aspects. In spatial distribution, mountain torrents repeat in upper and middle reaches in mountainous and hilly area. Flooding and water logging interweave repeat in middle and lower reaches over valley plain, coexist in the lower reaches. Furthermore, the severity and frequency of the disasters being enlarged day by day. So redution strategies are put forward in order to reduce the loss.
Keywords:flood  water logging disasters  integrate characteristics  laws  of formation  four rivers valley
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