The present situation of alien invasive plants in Anhui province and a comparison with the other provinces in China

Based on the field investigation and the related literatures,93 species of alien invasive plants belonging to 26 families had been founded so far in Anhui province.These species were analyzed on their original places,life-forms and harmfulness.The results showed that : The most abundant original places were America and Europe,respectively,involving 52 and 23 species.There were 88 species of herbs,including 10 species virulent weeds,3 species poisonous plants and 5 species harmful quarantine weeds in China.Compared with the other provinces and cities in China,the number and ratio of alien invasive plants were so high that Anhui province faced more and more serious problems about invasion of alien plants.