The effect of hazard was determined by the dangerous degree of hazard factor—environment and the vulnerable degree of sustaining body. The research into the latter is of importance for the hazard theory and the forma...The effect of hazard was determined by the dangerous degree of hazard factor—environment and the vulnerable degree of sustaining body. The research into the latter is of importance for the hazard theory and the formation of laws on the mitigation of natural hazards. The way to evaluate the vulnerable degree is the foundation of and the key to the research. In this paper, the extenics model is established to do this job.展开更多
[Objective] The aim was to assess the ecosystem vulnerability of Dashanbao wetland.[Method] The evaluation index system of ecosystem vulnerability of Dashanbao wetland was constructed by using analytic hierarchy proce...[Objective] The aim was to assess the ecosystem vulnerability of Dashanbao wetland.[Method] The evaluation index system of ecosystem vulnerability of Dashanbao wetland was constructed by using analytic hierarchy process(AHP),and the ecosystem vulnerability of Dashanbao wetland from 2002 to 2008 was assessed based on vulnerable degree of ecosystem.[Result] The vulnerable degree of ecosystem of Dashanbao wetland from 2002 to 2008 was 0.560 0,0.513 7,0.516 4,0.465 4,0.476 0,0.449 2 and 0.400 6 respectively,that is,showing decreasing trend on the whole,and the vulnerability of wetland ecosystem transformed from moderate vulnerability to mild vulnerability,and it showed that the ecological environment quality of Dashanbao wetland was better.[Conclusion] The study could provide references for wetland restoration,protection,ecological environment planning and management.展开更多
文摘The effect of hazard was determined by the dangerous degree of hazard factor—environment and the vulnerable degree of sustaining body. The research into the latter is of importance for the hazard theory and the formation of laws on the mitigation of natural hazards. The way to evaluate the vulnerable degree is the foundation of and the key to the research. In this paper, the extenics model is established to do this job.
文摘[Objective] The aim was to assess the ecosystem vulnerability of Dashanbao wetland.[Method] The evaluation index system of ecosystem vulnerability of Dashanbao wetland was constructed by using analytic hierarchy process(AHP),and the ecosystem vulnerability of Dashanbao wetland from 2002 to 2008 was assessed based on vulnerable degree of ecosystem.[Result] The vulnerable degree of ecosystem of Dashanbao wetland from 2002 to 2008 was 0.560 0,0.513 7,0.516 4,0.465 4,0.476 0,0.449 2 and 0.400 6 respectively,that is,showing decreasing trend on the whole,and the vulnerability of wetland ecosystem transformed from moderate vulnerability to mild vulnerability,and it showed that the ecological environment quality of Dashanbao wetland was better.[Conclusion] The study could provide references for wetland restoration,protection,ecological environment planning and management.
