鲁东大学学报:自然科学版
魯東大學學報:自然科學版
로동대학학보:자연과학판
Ludong University Journal (Natural Science Edition)
2012年
3期
261-265
,共5页
沂沐河流域%山东%洪涝灾害%Matlab拟合法
沂沐河流域%山東%洪澇災害%Matlab擬閤法
기목하류역%산동%홍로재해%Matlab의합법
Yishu River Basin%Shandong Province%flood disasters%Matlab fitting methods
基于沂沭河流域近600年历史洪水资料的搜集、整理和分析,对该流域洪涝灾害发生的时空分布特征以及形成原因进行了研究,结果表明:自公元1368年至1950年的近600年间,历史文献记载了该流域共发生洪涝灾害102次,平均每6年发生一次,其中轻度涝灾45次,占洪涝灾害总数的44.1%;中度涝灾37次,占36.2%;大涝灾16次,占15.6%;特大洪涝灾害4次,占4.1%.“明清小冰期”频繁变化的气候特征、流域地貌特征和河道变迁是洪涝灾害发生的主要原因.
基于沂沭河流域近600年歷史洪水資料的搜集、整理和分析,對該流域洪澇災害髮生的時空分佈特徵以及形成原因進行瞭研究,結果錶明:自公元1368年至1950年的近600年間,歷史文獻記載瞭該流域共髮生洪澇災害102次,平均每6年髮生一次,其中輕度澇災45次,佔洪澇災害總數的44.1%;中度澇災37次,佔36.2%;大澇災16次,佔15.6%;特大洪澇災害4次,佔4.1%.“明清小冰期”頻繁變化的氣候特徵、流域地貌特徵和河道變遷是洪澇災害髮生的主要原因.
기우기술하류역근600년역사홍수자료적수집、정리화분석,대해류역홍로재해발생적시공분포특정이급형성원인진행료연구,결과표명:자공원1368년지1950년적근600년간,역사문헌기재료해류역공발생홍로재해102차,평균매6년발생일차,기중경도로재45차,점홍로재해총수적44.1%;중도로재37차,점36.2%;대로재16차,점15.6%;특대홍로재해4차,점4.1%.“명청소빙기”빈번변화적기후특정、류역지모특정화하도변천시홍로재해발생적주요원인.
Through collecting, sorting and analyzing data of flood occurrences in Yishu River Basin in the past 600 years ,the spatial and temporal distribution as well as the causes of the flood disasters in this basin were studied. The result showed that there were 102 flood disasters recorded according to historical documents during about 600 years from AD 1368 to AD 1950,occurred once every six years. There existed 45 mild flood disasters which accounted for 44. 1% of the total amount of flood disasters,37 moderate flood disasters made up 36. 2% and 4 catastrophic flood disasters consisted in 4. 1%. It was found that the frequent change of climatic characteristics, the features of geomorphology in the fiver basin and the change of river channel during the "Little Ice Age in Ming and Qing Dynasties" were the main factors to cause flood disasters.