自然灾害学报
自然災害學報
자연재해학보
JOURNAL OF NATURAL DISASTERS
2000年
2期
26-31
,共6页
区域灾害熵%区域灾害加权熵%计算方法%应用案例
區域災害熵%區域災害加權熵%計算方法%應用案例
구역재해적%구역재해가권적%계산방법%응용안례
regional disaster entropy%weighted regional disaster entropy%calculation method%case study
某一区域的灾害风险反映了该区域灾害发生的不确定性。据此,本文采用信息熵的理论与方法,引入了区域灾害熵和区域灾害加权熵概念,并给出了相应的计算公式,选取山东省作为应用案例研究的区域,利用1949~1994年旱灾、洪涝灾害受灾面积资料计算了旱灾、洪涝灾害的区域灾害熵和区域灾害加权熵。研究结果表明,区域灾害加权熵可以作为表征区域灾害风险整体水平的一个综合指标。本文给出的区域灾害熵计算方法简便易行.
某一區域的災害風險反映瞭該區域災害髮生的不確定性。據此,本文採用信息熵的理論與方法,引入瞭區域災害熵和區域災害加權熵概唸,併給齣瞭相應的計算公式,選取山東省作為應用案例研究的區域,利用1949~1994年旱災、洪澇災害受災麵積資料計算瞭旱災、洪澇災害的區域災害熵和區域災害加權熵。研究結果錶明,區域災害加權熵可以作為錶徵區域災害風險整體水平的一箇綜閤指標。本文給齣的區域災害熵計算方法簡便易行.
모일구역적재해풍험반영료해구역재해발생적불학정성。거차,본문채용신식적적이론여방법,인입료구역재해적화구역재해가권적개념,병급출료상응적계산공식,선취산동성작위응용안례연구적구역,이용1949~1994년한재、홍로재해수재면적자료계산료한재、홍로재해적구역재해적화구역재해가권적。연구결과표명,구역재해가권적가이작위표정구역재해풍험정체수평적일개종합지표。본문급출적구역재해적계산방법간편역행.
Regional disaster risk can be considered as the reflection of the occurrence probability of regional disaster.In terms of information system theory,the author proposes the conceptions of regional disaster entropy and weighted regional disaster entropy,and provides their calculation formula.In case study,the author calculates the regional disaster entropy and weighted regional disaster entropy with the damage area data of drought disaster and flood-waterlogging disaster from 1949 to 1994 in Shandong Province.The result shows that the weighted regional disaster entropy can be regarded as a comprehensive index of regional disaster risk level,and the method of regional disaster entropy and weighted regional disaster entropy calculation given in this paper is simple and convenient.