中国地质灾害时空分布规律及防范重点  

The spatial and temporal distribution of China geo-hazard and key prevention area

作　　者：李媛[1] 曲雪妍[1] 杨旭东[1] 房浩[1] 尹春荣[1] 

机构地区：[1]中国地质环境监测院,北京100081

出　　处：《中国地质灾害与防治学报》2013年第4期71-78,共8页The Chinese Journal of Geological Hazard and Control

摘　　要：分析、研究灾害在时空上的分布特征,是预测其未来发展趋势、实施科学减灾措施的基础[1]。本文充分利用山区丘陵县(市)地质灾害调查成果,经统计分析,发现地质灾害在时空分布上具有一定的规律性:①我国滑坡崩塌泥石流高发期为5~8月,高发区随时间由南向北逐渐推移;②地质灾害年际变化特点为逐年波动,总体趋势上升;③地质灾害主要分布在四川、江西、云南,巨型和大型灾害主要分布在四川、云南、甘肃;④汛期全国地质灾害多发区和防范重点为东南和西南地区。To analyze and study the distribution characteristics of geo-hazard in space and time is the basis for predicting the future trends and implementing mitigation measures scientifically. Through fully using achievements of the geo-hazard survey of counties( cities) in mountain and hilly area,the paper count,analyzed and found that, there was a certain regularity of geo-hazard in the spatial and temporal distribution: ① May to August is the high-incidence period of landslide,rockfall and debris-flow. The occurrence disaster zones are from south to north as time goes by. ②The annual variation of geo-hazard fluctuates from year to year,and the trend is rising. ③Geo-hazard mainly distribute in Sichuan,Jiangxi and Yunnan. Giant and large scale disasters are mostly in Sichuan,Yunnan and Gansu. ④Prime and key prevention areas of Geo-hazard are southeast and southwest during the flood season.

关 键 词：地质灾害 时间分布 空间分布 

分 类 号：P694[天文地球—地质学]