The Damage Risk And Loss Assessment Of Adventive Organism Red Fire Ant, Solenopsis Invicta Buren, In Fujian

Red fire ant(Solenopsis invicta Buren)is a serious hazard alien specie.It not only harms the normal production of the national economy,but also damages the ecological environment of invasived area by the enormous ecological advantage.In addition,red fire ants can threaten human life and health.The paper studies the hazard of red fire ants in Fujian systematically.It analyses the ecological and economic impact in Fujian because of red fire ants from three aspects of the forecast of suitable area,assessment of invasived and estimate of economic losses.Then puts forward the management measure to reply the the invasion of red fire ants.The aim of the research is to provide scientific basis to survey,monitor,prevent and control work of red fire ants in Fujian.The result are as follows:According to the distribution of red fire ants major climate critical factors,the effective temperature and bio-climatic similarity distance,I select Access design database,MapInfo MapX and Visual Basic design procedures to construct the distribution model of red fire ants suitable area in Fujian.This model is run by 28 sites in 30 years meteorological information of Fujian province.The forecast result shows that:all of province are surrounded by the red fire ants suitable area.the mildly dangerous area occupies 7.14%,distributing in Dehua Jiuxianshan in the mid of Fujian and Shouning in the northern of Fujian.The dangerous area accounts for 50.00%,mainly including the western mountains of Fujian and northern coastal areas of Fujian.The high-risk area accounts for 42.86%,mainly including central part of Fujian and most parts of the southern coast.The paper collects data information about the impact factor of the invasion of red fire ants in Fujian systematically.Then constructed the risk assessment indicator system and the risk of the R computation model about the invasion of red fire ants in Fujian.The result shows that the risk value is R=2.194.So the red fire ants belongs to a high dangerous invasive species.This study only estimates the ecological and economic losses of loimic area of the red fire ants in Fujian.According to the field survey data and statistical information of red fire ants loimic area in Longyan,Fujian,the total loss that is affected by red fire ants is estiamated￥2306039.28 in 2005 in Fujian from direct economic losses and indirect economic losses.It accounts for 10.8%GDP.Direct economic losses is￥1971446.19,indirect economic losses is￥334593.09;loimic areas loss per area is as much as￥13665.44/hm~2.In order to deal with red fire ants epidemic,this paper put forward a series of policy suggestion and practical preventative and mitigative measures from the quarantine identification,the monitoring of loimic area and the prevention and cure of epidemic and so on.Finally,《The Red Fire Ants epidemic Crisis Management Plans in Fujian》is established.