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引用本文:王凤,吴敦银,李荣昉.鄱阳湖区洪涝灾害规律分析.湖泊科学,2008,20(4):500-506. DOI:10.18307/2008.0414
WANG Feng,WU Dun-yin,LI Rong-fang.Analysis on flood disaster characteristics in Lake Poyang region. J. Lake Sci.2008,20(4):500-506. DOI:10.18307/2008.0414
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鄱阳湖区洪涝灾害规律分析
王凤1,2, 吴敦银1,2, 李荣昉1,3
1.江西师范大学鄱阳湖生态环境与资源研究教育部重点实验室, 南昌 330022;2.江西师范大学地理与环境学院, 南昌 330029;3.江西省水利科学研究院, 南昌 330029
摘要:
根据1950-2002年的鄱阳湖洪水与洪水灾害损失资料,建立年最高洪水位与洪灾损失的相关模型;运用概率统计的理论与方法,研究了鄱阳湖区洪涝灾害与灾害损失的统计规律,将鄱阳湖洪水、鄱阳湖区洪涝灾害的受灾面积划分为6个等级,揭示鄱阳湖区洪水主要集中于10年一遇(3级)以下;一般洪水为2-5年一遇,在统计资料内,共发生过24次,造成的损失只占到历年总损失量的约1/3;5年一遇以上的洪水虽然只发生过7次,但是其损失却占历年洪灾总损失的约2/3.采取综合治理措施,降低鄱阳湖洪水位,并进一步提高鄱阳湖区圩堤防洪能力是减轻鄱阳湖区洪涝灾害损失的有效途经.
关键词:  鄱阳湖区  洪水等级  洪灾频率  灾害规律
DOI:10.18307/2008.0414
分类号:
基金项目:鄱阳湖区生态环境与资源研究教育部重点实验室(江西师范大学)开放基金(PK2004003)资助
Analysis on flood disaster characteristics in Lake Poyang region
WANG Feng1,2, WU Dun-yin1,2, LI Rong-fang1,3
1.Key Laboratory of Lake Poyang Ecological Environment and Resource Research of Ministry of Education, Jiangxi Normal University, Nanchang 330022, P.R.China;2.School of Geography and Environment, Jiangxi Normal University, Nanchang 330029, P.R.China;3.Institute of Water Science, Jiangxi Province, Nanchang 330029, P.R.China
Abstract:
Based on the data of flood peak levels and flood disaster losses in Lake Poyang region during the period of 1950-2002, this paper established the correlation model between the annual flood peak levels and flood disaster losses, analysed the statistical pattern and regularity of flood disasters and flood disaster losses in Lake Poyang. A scheme of 6-grades was established for floods and areas of flooing in the Poyang region, which revealed that most of the floods occurred once every 2-5 year and are smaller than Grade 3 flood (once every ten year). Lake Poyang had 24 floods during 1950-2002, which accounts 1/3 of total flood disaster losses of this period. Although, Grade 4 floods (once every 5 year) were recorded only 7 times, they account 2/3 of total flood disaster losses. We believe, to low peak flood levels by comprehensive and integrated measures and management, and to increase the capacity of flood prevention for the dyked lakeside farmland are the effective options for mitigation of flood damages and losses.
Key words:  Lake Poyang region  flood grade  frequency of flood disaster  regularity of flood disaster loss
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