Guo Qinfeng, Qian Hong, Ricklefs Robert E, Xi Weimin
Ecol Lett. 2006 Jul;9(7):827-34. doi: 10.1111/j.1461-0248.2006.00938.x.
Although some plant traits have been linked to invasion success, the possible effects of regional factors, such as diversity, habitat suitability, and human activity are not well understood. Each of these mechanisms predicts a different pattern of distribution at the regional scale. Thus, where climate and soils are similar, predictions based on regional hypotheses for invasion success can be tested by comparisons of distributions in the source and receiving regions. Here, we analyse the native and alien geographic ranges of all 1567 plant species that have been introduced between eastern Asia and North America or have been introduced to both regions from elsewhere. The results reveal correlations between the spread of exotics and both the native species richness and transportation networks of recipient regions. This suggests that both species interactions and human-aided dispersal influence exotic distributions, although further work on the relative importance of these processes is needed.
尽管一些植物特征与入侵成功有关，但区域因素（如多样性、栖息地适宜性和人类活动）的潜在影响尚未得到充分理解。这些机制中的每一个都预测了区域尺度上不同的分布模式。因此，在气候和土壤相似的地方，可以通过比较源区和接收区的分布来检验基于区域入侵成功假说的预测。在这里，我们分析了东亚和北美之间引入的或从其他地方引入到这两个地区的所有1567种植物的原生和外来地理分布范围。结果揭示了外来物种扩散与接收区本地物种丰富度和交通网络之间的相关性。这表明物种相互作用和人类辅助扩散都影响外来物种的分布，尽管需要进一步研究这些过程的相对重要性。
