摘要
河南省水旱灾害十分频繁。本文在1450年-1979年分区历史水旱灾年频率计算的基础上,结合由1980年-2009年数据得到的降雨量距平百分率旱年频次,以及由多年(1980年-2010年)平均汛期雨季(6月-9月)降水量和降水变率获得的综合降水量对洪水灾害危险性的影响度,根据频率越高,危险性越大的原则,利用GIS技术,从时空尺度上对河南省干旱灾害危险性、洪水灾害危险性、水旱灾害综合危险性进行分析。结果表明:在行政区划范围内,干旱灾害危险性的高风险区主要位于平顶山市、郑州市和许昌市的大部分地区,低风险区主要位于南阳市和信阳市;洪水灾害危险性的高风险区主要位于平顶山市南部、漯河市南部和周口市的西南部地区、以及商丘市东南部,和开封、周口、商丘三市的交界处,低风险区主要位于南阳市的大部分地区;水旱灾害综合危险性的高风险区主要位于平顶山市,低风险区主要位于南阳市。其结果可为河南省水旱灾害的风险评估、风险管理及防灾减灾预案等提供重要依据。
Flood and drought disasters are very frequent in Henan Province. Based on the frequency calculation of historical zoning flood and drought disasters from 1450 to 1979, frequency of drought year from precipitation anomaly percentage and influence degree of integrative precipitation on flood disaster risk, using GIS technique, this paper has analyzed the drought disaster risk, flood disaster risk, the integrative risk of flood and drought disaster in Henan Province from spatio-temporal scale according to the principle of the risk rises with frequency. The conclusions are as follows： 1） Extremely high risk regions of drought disaster mainly lie in Pingdingshan city, Zhengzhou city and the most of Xuchang city; high risk regions mainly lie in Xinxiang city, Jiaozuo city, Hebi city, Jiyuan city, the most of Luohe city, and the east of Luoyang city; medium risk regions mainly lie in Kaifeng city, Shangqiu city, Zhoukou city, Anyang city, Puyang city; low risk regions mainly lie in Zhumadian city, the most of Sanmenxia city, the south and west of Luoyang city; very low risk regions are mainly located in Nanyang city and Xinyang city; 2） As for flood disaster hazard, very high risk regions mainly lie in the south of Pingdingshan and Luohe city, the southwest of Zhoukou city, the southeast of Shangqiu city, and the common boundary of Kaifeng city, Zhoukou city and Shangqiu city; high risk regions mainly lie in Xuchang city, the south of Luoyang city, the most of Zhoukou city, the northwest of Shangqiu city, the south of Kaifeng city, the north of Luohe and Pingdingshan city; medium risk regions mainly lie in Sanmenxia city, Jiyuan city, Hebi city, the most of Luoyang and Zhengzhou city, etc; low risk regions mainly lie in Puyang city, the most of Xinxiang and Zhumadian city, the east of Anyang and Jiaozuo city, and the north of Xinyang city; very low risk regions are mainly located in the most of Nanyang city; 3） As to the integrative flood and drought disaster hazard, very high risk regions mainly lie in Pingdingshan city; high risk regions mainly lie in Xuchang city, Luohe city, Zhoukou city, Shangqiu city, Kaifeng city, Hebi city, Anyang city; medium risk regions mainly lie in Xinxiang city, Luoyang city, Zhengzhou city, Puyang city, Jiyuan city, Jiaozuo city, Sanmenxia city; low risk regions mainly lie in Zhumadian and Xinyang city; very low risk regions are mainly located in Nanyang city. The results can provide important basis for risk assessment and management of flood and drought disasters, disaster prevention and reduction and so on.
出处
《资源科学》
CSSCI
CSCD
北大核心
2012年第8期1526-1532,共7页
Resources Science
基金
国家自然科学青年基金(编号:41001359)
教育部人文社会科学研究青年项目(编号:09YJCZH032)
教育部人文社会科学重点研究基地重大项目(编号:12JJD790023)
河南大学青年骨干教师培养计划基金
关键词
水旱灾害
危险性分析
GIS技术
河南省
Flood and drought disaster
Risk analysis
GIS technique
Henan Province
