摘要
广东省泥石流灾害主要分布于粤西、粤东、粤北西部和珠江三角洲北部地区。根据对泥石流历史数据的统计分析研究发现,广东省泥石流灾害虽然发生频率低,但造成的经济损失巨大,明显高于滑坡、崩塌灾害,且呈现频率低、规模大、成灾快、损失严重、时空分布集中、危害范围广等特点。文中最后提出了广东省泥石流防治对策:提高防灾意识,做好防灾规划;注重对低频泥石流的防范;因地制宜采取防治措施;加强预防监督,杜绝人为灾害。
Base on the statistics and analyses of debris flow hazards from 1997 to 2003, the present situation of debris flow hazards of Guangdong are analyzed in four aspects： disaster-pregnant environment, spatial and temporal distribution, the conditions of disaster and damage, and preventing and treating measures for debris flow hazards. Research show that under geological conditions, geomorphic conditions, meteorological and hydrographic conditions and human activity factors, some regions easily generate debris flow hazards. Mainly distributed in the west, east, north-west of Guangdong and the north area of Pearl River Delta, debris flow hazards usually cause serious economic loss, 22.58% of which belong to extremely severe disasters. Influenced by the meteorology and human activity, debris flow hazards are fluctuated in time, and mostly occur over the period from April to September. Moreover, debris flow in Guangdong has other characteristics such as： regional coherence, wide range of damage, centralized distribution of time and space, accompanying with landslide and collapse hazards, aggravating soil and water loss due to erosion, frequently generated by human activities. Based on the research, this paper proposes several constructive suggestions for debris flow hazards prevention and treatment as follows： enhancing the awareness of hazard precaution and planning, keeping watch on the occurrence of low frequency debris flow, and making preventing and treatment measures according to different local conditions.
出处
《热带地理》
北大核心
2009年第4期335-339,共5页
Tropical Geography
关键词
泥石流
孕灾环境
灾害特点
灾情分析
防治对策
广东省
debris flow
hazard circumstances
characters of debris flow hazard
hazards preventing suggestions
Guangdong province
