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外来种-本地种亲缘关系对外来植物归化和入侵的影响
郑珊珊,陈旭波,许微楠,骆争荣(),夏更寿
Effects of exotic-native species relationship on naturalization and invasion of exotic plant species
ZHENG Shan-Shan,CHEN Xu-Bo,XU Wei-Nan,LUO Zheng-Rong(),XIA Geng-Shou

图1. 同属本地植物种数、外来种-本地群落最近谱系距离(DNNS)和外来种-本地群落平均谱系距离(MDNS)在不同尺度上对外来植物归化、扩散和危害的影响。A, 对各省同属归化种数量的影响。B, 对各省同属归化种数量的影响(除双0数据)。C, 对外来种在温州归化成功率的影响。D, 对入侵种在温州出现频度的影响。E, 对外来种成功入侵群落的影响。F, 对群落内入侵种多度的影响。实线段表示各参数的95%置信区间。虚线为0线。虚线与实线段相交表示相应的回归系数不显著。物种水平的归化年代为1-5级, 数值越大归化年代越近, 因此回归参数为负值时表示归化时间越短的外来种在相应阶段的表现越差。

Fig. 1. The effects of the number of congeneric natives, phylogenetic distance to the nearest native species (DNNS) and mean phylogenetic distance (MDNS) to all native species in the same community (or flora) on naturalization, dispersal and invasion at different scales. A, Effects on the number of exotics naturalized in a province. B, Effects on the number of exotics naturalized in a province without double-zero records. C, Effects on probability of exotics successfully naturalized in Wenzhou. D, Effects on frequency of exotics naruralized in Wenzhou. E, Effects on exotics successfully invade in communities we examined. F, Effects on invasive species abundance in communities we examined. Solid line segments are 95% credible intervals of parameter distribution. Dash lines are zero lines. If a solid line intersects with a dash line, it means the corresponding coefficient was not significant. Period of naturalization, evaluated at the species level, ranges from 1 to 5, with 5 being more recent naturalization, so a negative coefficient indicates that species introduced more recently perform inferior.