Disaster entropy:conception and application
Ren Qiang Lu · Ziran zaihai xuebao · 2000
Regional disaster risk can be considered as the renection of the occurrence probabilityof regional disaster. In terms of information system theory, the author proposes the concep-tions of regional disaster entropy and weighted regional disaster entropy, and provides theircalculation formula In case study, the author calculates the regional disaster entropy andweighted regional disaster entropy wlth the damage area data of drought disaster andflood-waterlogging disaster from 1949 to 1994 in Shandong Province. The result shows thatthe weighted regional disaster entropy can be regarded as a comprehensive index of regional dis-aster risk level, and the method of regional disaster entropy and weighted regional disasterentropy calculation given in this paper is simple and convenient.