A survey of invasive alien plant species in Dinghushan National Nature Reserve.

The invasive alien plant species in Dinghushan National Nature Reserve were investigated using line investigation and sample plot survey methods. The results showed that the invasive alien plant species were found in all experimental zone,the buffer zone,and core zone. There were 14 invasive alien plant species out of 53 investigated plant species,accounted for 26.42% of total plant species found in the experimental zone. In terms of the comprehensive values of dominance of invasive alien weeds,Ageratum conyzoides and Pliea microphylla were larger than that of other plant species. In buffer zone,there were 14 invasive alien plant species out of 62 investigated plant species,accounted for 22.58%t of total plant species. The comprehensive values of dominance of Pliea microphylla,Ageratum conyzoides and Wedelia trilobata were larger than that of other plant species. There were only three invasive alien plant species out of 24 investigated plant species occurred in core zone,which were clearly lower than those of experimental and buffer zones. The invasive alien plant species accounted for 12.5% of total plant species. The invasive alien plant species with the largest comprehensive values of dominance were Peperomia pellucida and Ageratum conyzoides. The introduction way and effect of the invasive alien plant species on ecosystem of Dinghushan National Nature Reserve were also discussed. The results were useful to reserve biodiversity and manage invasive alien plant species in Dinghushan National Nature Reserve. [Ch,3 tab. 18 ref.]