Application Of Ecological Security Of Fuzhou City, China

In this dissertation,based on the current domestic and foreign research resultswhich are drew on build index system,index selection and evaluation method,thispaper use comprehensive index method,Grey correlation method and Catastropheprogession method to evaluate and analyze the dynamic status of ecological securityin Fuzhou City.After investigat experts and combined with the actual situation of thestudy area,select42index to structure a evaluation index system which called PSRsystem,based on indexs standard and calculate entropy weight,use comprehensiveindex method to evaluat the eco-security dynamic status of Fuzhou City.Seqencing theindex by the value of entropy weight,select26indexs which weight values greaterthan0.02,then use rough set theory,wipe off redundant information,get18indicator-s,finally use catastrophe progression method and gray correlation analysis method toevaluat the eco-security of Fuzhou City.By analysis and comparison the Basic principles, advantages, disadvantages ofthe three methods and combined with the actual situation of Fuzhou,We found that theecological security assessment results of Fuzhou derived from the catastropheprogression method is more realistic;So we use the catastrophe progression method tomake a further analysis of ecological security.The results showed that the ecologicalsafety level of Fuzhou overall has been an upward trend,Among2000to2002risemore rapidly;Because of the reduction of the built-up green area as well as the declinein air quality rate,the state of the system security trends have a mutation in2003;Thesystem of ecological security level is rising after the2003,The main reason may be theecological environment of Fuzhou already in the security warning status,Governmenthas realized the importance of the urban ecological environment and enhance theecological control efforts which have had a significant effect and the ecologicalsecurity level by unsafe rising as critical level of security to2008,does not meet thelevel of security,But proved positive protection work which played a big rol-e;According to the evaluation results of catastrophe progression method,Using a linearfitting to predict the ecological security of Fuzhou,The forecast results show that theecological safety of Fuzhou overall level can achieve the desired level of safety From2012,Pressure safety membership and respond to security membership achieve thedesired level of safety,but state safety membership is still in a very unsafe level.Use ecological footprint method to make a dynamic analysis of ecologicalcarrying capacity conditions of Fuzhou.Calculated ecological footprint and ecological capacity of Fuzhou from2000to2011,And useecological deficit,ecological footprintsdepth,the ecological footprint breadth and the footprint depth footprint breadth pricescissors to analyze ecological carrying capacity of Fuzhou.The results show that theecological footprint of Fuzhou from2000to2011are greater than the ecologicalcarrying capacity, ecological environment is unsafe;The results of the depth andbreadth of the ecological footprint show that the resource supply of Fuzhou is alreadysaturated in2000and the main sources of natural resources supply into stock in2004;Use Gray GM(1,1) model predict the trend of ecological carrying capacity ofFuzhou in the next decade.The forecast results show that ecological carrying capacityof Fu zhou will be far can not afford ecological footprint and the ecological deficit isgrowing.Finally, according to the study found that the problem with the reality ofFuzhou recommendations to improve the urban ecological security.