Study On Suitable Area And Economic Loss Assessment Of Ten Important Forestry Weevils In China

Cryptorhynchus lapathi(L.), Rhynchophorus ferrugineus(O liver), R. palmarum(L.), R. phoenicis(F.), Sternochetus mangiferae(F.), S. olivieri(Faust), S. frigidus(F.), Anthonomus quadrigibbus Say, Baris deplanata Roelofs and Alcidodes juglans Chao are all important forestry harmful insects which belong to Coleptera Curculionidae. It is of great significance to study suitability distribution and potential economic losses of these weevils. In study, the data was collected containing biological characters and geographical distribution of ten important forestry weevils. Suitable distribution was studied by using three models, including climatic dynamic CLIMEX model, which Compare Location one species and Match climate Regional functions, ecological niche genetic algorithm GARP model, ecological niche maximum entropy MaxEnt model, in addition, Geography Information System ArcGIS software was used to generate suitable area maps. In additio n, economic loss was evaluated by collecting host distribution areas and ecosystem service value in China, and creating model, including current economic losses in known distribution areas and potential economic losses in potential distribution suitable areas. In addition, current and potential economic losses all contain two loss parts, which are forestry loss and ecological environmental service quality loss. The results showed that ten weevils all have different degrees of suitable areas in China, and ha ve enormous economic loss threat.The suitable areas of Cryptorhynchus lapathi in China mainly concentrate on 23 provinces(city, autonomous region), Heilongjiang, Jilin, Liaoning, Neimenggu, Hebei, Beijing, Tianjin, Shandong, Shanxi, Shannxi, Henan, Jiangsu, Hubei, Anhui, Chongqing, Gansu, Xinjiang, eastern Q inghai, western and central Sichuan, Guizhou, Zhejiang, northern Yunnan, south-eastern Xizang. The current economic loss caused by C. lapathi in China is estimated to be 27.312 billion yuan/year, of which forestry loss is to be 18.583 billion yuan/year and ecological environmental service quality loss is to be 8.729 billion yuan/year; Potential economic loss caused by C. lapathi in China is estimated to be 28.959 billion yuan/year, of which the potential forestry loss is to be 18.454 billion yuan/year and potential ecological environmental service quality loss is to be 10.505 billion yuan/year.The suitable areas of Rhynchophorus ferrugineus in China mainly concentrate on 16 provinces(city, autonomous region), southern Jiangsu, Shanghai, southern Anhui, Zhejiang, Hubei, Jiangxi, Hunan, Fujian, Guangdong, Hainan, Guangxi, Chongqing, western Sichuan, Guizhou, Yunnan, south-eastern Xizang. Currently, R. ferrugineus have happened in all almost suitable areas in China, the economic loss is estimated to be 76.148 billion yuan/year, of which forestry loss is to be 47.963 billion yuan/year and ecological environmental service quality loss is to be 28.185 billion yuan/year.The suitable areas of Rhynchophorus palmarum in China mainly concentrate on 7 provinces(city, autonomous region), Fujian, Guangdong, Hainan, Guangxi, south-western Guizhou, Yunnan, south-eastern Xizang. Currently, R. palmarum does not distributed in China. If R. palmarum happened in all suitable areas in China, the economic loss is estimated to be 46.493 billion yuan/year, of which forestry loss is to be 36.802 billion yuan/year and ecological environmental service quality loss is to be 9.692 billion yuan/year.The suitable areas of Rhynchophorus phoenicis in China mainly concentrate on 5 provinces(city, autonomous region), Guangdong, Hainan, Guangxi, southern Yunnan, south-eastern Xizang. Currently, R. phoenicis does not distributed in China. If R. phoenicis happened in all suitable areas in China, the economic loss is estimated to be 14.088 billion yuan/year, of which forestry loss is to be 5.459 billion yuan/year and ecological environmental service quality loss is to be 8.629 billion yuan/year.The suitable areas of Sternochetus mangiferae in China mainly concentrate on 8 provinces(city, autonomous region), Fujian, Guangdong, Hainan, Guangxi, Sichuan, south-western Guizhou, Yunnan, south-eastern Xizang. Currently, S. mangiferae does not distributed in China. If S. mangiferae happened in all suitable areas in China, the economic loss is estimated to be 2.079 billion yuan/year, of which forestry loss is to be 1.114 billion yuan/year and ecological environmental service quality loss is to be 0.964 billion yuan/year.The suitable areas of Sternochetus olivieri in China mainly concentrate on 7 provinces(city, autonomous region), Guangdong, Hainan, Guangxi, Sichuan, south-western Guizhou, Yunnan, south-eastern Xizang. The current econo mic loss caused by S. olivieri in China is estimated to be 0.465 billion yuan/year, of which forestry loss is to be 0.256 billion yuan/year and ecological environmental service quality loss is to be 0.209 billion yuan/year; Potential economic loss caused by S. olivieri in China is estimated to be 1.992 billion yuan/year, of which the potential forestry loss is to be 1.063 billion yuan/year and potential ecological environmental service quality loss is to be 0.929 billion yuan/year.The suitable areas of Sternochetus frigidus in China mainly concentrate on 7 provinces(city, autonomous region), Guangdong, Hainan, Guangxi, Sichuan, south-western Guizhou, Yunnan, south-eastern Xizang. The current economic loss caused by S. frigidus in China is estimated to be 1.154 billion yuan/year, of which forestry loss is to be 0.624 billion yuan/year and ecological environmental service quality loss is to be 0.529 billion yuan/year; Potential economic loss caused by S. frigidus in China is estimated to be 1.074 billion yuan/year, of which the potential forestry loss is to be 0.571 billion yuan/year and potential ecological environmental service quality loss is to be 0.504 billion yuan/year.The suitable areas of Anthonomus quadrigibbus in China have distribution in all provinces mainly concentrate on Heilongjiang, Jilin, Liaoning, Hebei, Beijing, Tianjin, Shandong, Shanxi, Shannxi, N ingxia, Henan, Jiangsu, Hubei, Anhui, Jiangxi, Hunan, Fujian, Guangdong, Hainan, Chongqing, western and central Sichuan, Guizhou, Zhejiang, Yunnan. Currently, A. quadrigibbus does not distributed in China. If A. quadrigibbus happened in all suitable areas in China, the economic loss is estimated to be 145.148 billion yuan/year, of which forestry loss is to be 130.534 billion yuan/year and ecological environmental service quality loss is to be 14.614 billion yuan/year.The suitable areas of Baris deplanata in China mainly concentrate on 25 provinces(city, autonomous region), Jilin, Liaoning, Hebei, Beijing, Tianjin, Shandong, Shanxi, Shannxi, Henan, Jiangsu, Shanghai, Anhui, Zhejiang, Hubei, Jiangxi, Hunan, Fujian, Guangdong, Hainan, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan, Xizang. The current economic loss caused by B. deplanata in China is estimated to be 7.309 billion yuan/year, of which forestry loss is to be 6.155 billion yuan/year and ecological environmental service quality loss is to be 1.154 billion yuan/year; Potential economic loss caused by B. deplanata in China is estimated to be 0.235 billion yuan/year, of which the potential forestry loss is to be 0.135 billion yuan/year and potential ecological environmental service quality loss is to be 0.100 billion yuan/year.The suitable areas of Alcidodes juglans in China mainly concentrate on 24 provinces(city, autonomous region), Liaoning, Hebei, Beijing, Tianjin, Shandong, Shanxi, Shannxi, Henan, Jiangsu, Shanghai, Anhui, Zhejiang, Hubei, Jiangxi, Hunan, Fujian, Guangdong, Hainan, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan, Xizang. The current economic loss caused by A. juglans in China is estimated to be 3.544 billion yuan/year, of which forestry loss is to be 3.054 billion yuan/year and ecological environmental service quality loss is to be 0.490 billion yuan/year; Potential economic loss caused by A. juglans in China is estimated to be 0.933 billion yuan/year, of which the potential forestry loss is to be 0.831 billion yuan/year and potential ecological environmental service quality loss is to be 0.102 billion yuan/year.