Investigation on the Distribution of Pomacea canaliculata in Erhai Lake Basin
Through the investigation on the distribution of Pomacea canaliculata in the Erhai Lake basin, including the water area in each village and town, main inflow and outflow rivers, it showed that Pomacea canaliculata was widely distributed in the Erhai Lake basin, mainly in Yong'an River, Luoshi River and the west coast of the Erhai Lake, Xihu and Donghu wetland, Luoshi wetland, Xizhou Town, Yinqiao Town and Xiaguan Town; while there was no Pomacea canaliculata in Miju River, Mici River, Boluo River, Fengyu River and Xi'er River. According to the related references and date analysis, downstream diffusion was the main disfussion way of Pomacea canaliculata, and human activity had a great influence on it. The main concentrated diffusion area of Pomacea canaliculata was the buffer area of wetlands and lakesides, Dengchuan Town, Shangguan Town, Wanqiao Town, Dali Town and Haidong Town were the high risk diffusion areas of Pomacea canaliculata.