Economic Loss Evaluation And Risk Assessment Of Damage By Oriental Fruit Fly In Fujian

Oriental Fruit Fly is an important quarantine pest which affecting agriculture sustainable development and damage fruit-vegetable producing, it has caused tremendous loss to Fujian Province. It is urgent to quantify the damage caused by Oriental Fruit Fly and assess the hazard risk to the cities for Fujian Province, in order to provide decision-making for effective prevention and control Oriental Fruit Fly.In this review, the damage characteristic and occurred state of Bactrocera dorsalis were discussed on the basis of monitoring result. The Bactrocera dorsalis total trapping quantity increased significantly in Fujian Province from 2003 to 2005, the total quantity increased by 124.5% as compared with in 2004 over 2003, increased by 75.52% as compared with in 2005 over 2004. In general, the quantity in the coastal area of east Fujian Province greater than the other areas, and the damage becomes more serious with the lower of latitudes.At first, the economic meanings of Oriental Fruit Fly are demonstrated, the index system of economic loss evaluation for Oriental Fruit Fly is constructed, and the evaluation methods of economic loss for Oriental Fruit Fly are proposed, then the evaluation models for index are constructed. All kinds of economic losses caused by Oriental Fruit Fly are calculated with base year 2005. It is estimated that the total economic loss is 1.21×10~8 yuan, in which, the direct value is about 1.09×10~8 yuan, the indirect value about 0.12×10~8 yuan.In this paper, the risk evaluation index system of Oriental Fruit Fly is established based on occurrence characteristics of Oriental Fruit Fly in regional cities of Fujian, climatic environment in Fujian and development of Oriental Fruit Fly, combination with socioeconomic status of Fujian. Following that, determined the weight of the index by using Analytic Hierarchy Process; risk assessment model of Oriental Fruit Fly disaster is established, and the comprehensive decision-making index is obtained on the basis of these indexes data, the rank for comprehensive decision-making index of regional cities is longyan,zhangzhou,xiamen,fuzhou,quanzhou,putian,ningde,sanming and nanping. At last, risk zoning map of Oriental Fruit Fly disaster is made which based on Arcview3.0 software.In this article, we try to discuss the reason of Oriental Fruit Fly invasion and caused disaster for fujian from the following three aspects: the biological characteristic and ecological characteristic of Oriental Fruit Fly, ecological environment characteristic of fujian province, influence of human activities. The best scheme for Oriental Fruit Fly was selected on basis of expectation cost minimization for Oriental Fruit Fly controlling in honey pomelo garden. Considering the different control strategies, the optimal control scheme is trapping by application of sex pheromone immediately in honey pomelo garden, if necessary, applied twice. If it still doesn't works, release sterile male adult immediately.