5Bertolino S.,Genovesi P..Spread and atlempted eradication of the grey Squirrel(Sciurus carolinensis) in Italy,and consequences for the red squirrel (Sciurus vulgaris) in Eurasia.Biological Conservation,2003,109(3):351 - 358.
5REJM NEK M,RICHARDSON D M.What attributes makesome plant species more invasive?[J].Ecology,1996,77(6):1655-1661.
6DAEHLER C C.Variation in self-fertility and the reproductiveadvantage of self-fertility for an invading plant(Spartina al-terniflora)[J].Evolutionary Ecology,1998,12(5):553-568.
7SUTHERLAND S.What makes a weed a weed:Life historytraits of native and exotic plants in the USA[J].Oecologia,2004,141(1):24-39.
8FENG Y L,LEI Y B,WANG R F,et al.Evolutionary tradeoffsfor nitrogen allocation to photosynthesis versus cell walls in aninvasive plant[J].Proceedings of the National Academy ofSciences,2009,106(6):1853-1856.
9COLAUTTI R I,MARON J L,BARRETT S C H.Common gar-den comparisons of native and introduced plant populations:Latitudinal clines can obscure evolutionary inferences[J].Evo-lutionary Applications,2009,2(2):187-199.
10HUFFORD K M,MAZER S J.Plant ecotypes:Genetic dif-ferentiation in the age of ecological restoration[J].Trends inEcology&Evolution,2003,18(3):147-155.