四川省高县自然灾害及防御对策

高县位于四川盆地南部山区,幅员面积1321平方公里,主要自然灾害有干旱、低温、暴雨、大风、冰雹、洪水、水力侵蚀、地裂缝、蠕变体、滑坡、泥石流等。夏旱频率高达93.8％;低温频率3月上旬为50％,9月下旬为45％,暴雨集中于5—9月;水土流失面积达882.96平方公里(占总面积的66.8％),地质地貌灾害严重,大量石块泥砂阻塞河道,造成洪水暴涨成灾。本文在分析上述灾情的基础上提出建立生态农业;强化工程改造;以林为主,农为主导多层次设防。

NATURAL DISASTER AND DEFENDING COUNTER-MEASURE OF GAOXIAN COUNTY OF SICHUAN PROVINCE

Gaoxian County is located in the southern mountains of Sichuan Basin. It covers 1, 321km2. It's mainly natural disasters are dry, low temperature, storm, hydraulic erosion, landslide, debris flow, wriggling body and geologic crack etc. The frequency of dry at Oaoxian County comes up to 93. 8%. The frequency of low temperature in the last ten days of March is 50%, in the last ten days of September is 45%. The storm concentrates in the period from May to September. The area of soil and water erosion at Gaoxian County reaches 882. 96km2(which is 66. 8% of the whole county area). The disaster of geology and geomorphy at Gaoxian County is serious. The following countermeasures of synthetical defending based on analysing the characters and the conditions of disasters are provided, which are refered: building ecology agriculture, strengthening engineering remake, advancing on the road of developing foresting as ruler, developing agriculture as instructor, developing a diversified and comprehensive economy which lead to rich, suiting measures to local condition, making key projects, using defending as principal, concoting administer and defending.