基于MAXENT的稻水象甲在中国的入侵扩散动态及适生性分析

Historical invasion,expansion process and the potential geographic distributions for the rice water weevil,Lissorhoptrus oryzophilus in China based on MAXENT

稻水象甲Lissorhoptrus oryzophilus Kuschel是中国水稻上的重要植物检疫性害虫,根据稻水象甲的分布数据及其主要寄主水稻的分布,利用MAXENT生态位模型和ArcGIS对其在中国的入侵扩散动态及适生性进行了再分析和预测。稻水象甲在中国的扩散主要分为2个阶段:1988—1996年为零星扩散阶段,稻水象甲分布集中在环渤海湾及东南沿海地区,首次入侵发现地大多出现在港口城市;2001年至今为快速扩散阶段,稻水象甲逐步从沿海地区向内陆省份扩散,首次入侵发现地大多位于铁路或公路沿线城市。稻水象甲在中国的适生区广泛,90%以上水稻种植区均适合其生存,高度适生区域主要集中分布在南方稻区,少量分布在环渤海湾一带。

The rice water weevil,Lissorhoptrus oryzophilus Kuschel,is a disastrous plant quarantine pest of rice in China.According to occurrence records for rice water weevil all over the world,historical invasion,dispersal process and the potential geographic distributions for the pest were reanalyzed by using ecological niche model（MAXENT） and ArcGIS with rice planting data.The historical invasion and expansion process of L.oryzophilus within China were mainly classified into two phases of scattering dispersion and rapid expansion.During the period from 1988 to 1996,the rice water weevil concentrated in Circum-Bohai Sea Region and southeastern coastal area,and firstly invaded sites mostly located at port cities.In the second period of 2000s,it gradually had spread further inland from the eastern coastal region,and the firstly detected sites were mostly along railways or highways.The rice water weevil could survive in more than 90% of rice planting area across China.The highly potential region located at rice growing region mainly in southern China and partly in the Circum-Bohai Sea Region.