6个亚洲港口城市入侵植物的传粉特征

Pollination Characteristic of Invasive Plants in Six Port Cities of Asia

理论预测植物传粉方式会影响植物的入侵性,使入侵被子植物中动物传粉的比例有所降低,但这个预测缺乏观察数据的证实.收集整理了亚洲太平洋沿岸的6个港口城市的入侵植物的种类及其传粉方式,以探究传粉方式与植物入侵的关系.结果表明,入侵植物中动物传粉的比例在66.1%与82.6%之间,平均值高达76.8%,但与原产地的被子植物相比,入侵的被子植物中动物传粉的比例显著地降低,这一特点在热带尤为明显.绝大部分的入侵种都能进行有性繁殖以及入侵种中高比例的动物传粉这两方面特征意味着这些入侵种将与土著种竞争传粉者,从而影响土著种的繁殖.

Theory has suggested that pollination type of plants will affect their invasive ability, and that invasive angiosperm will have a lower ratio of animal-pollinated species however, it has not been supported by stable empirical evidences. By analyzing invasive plants and their pollination types of six port cities on the Pacific coast in Asia, this study discusses the relationship between pollination and plant invasion. The results show that the ratio of animal-pollinated invasive angiosperm is 66. 1%--82. 6%, with an average of 76.8%. Though the ratio is very high, compared to that of animal-pollinated angiosperm in the native areas, it decreases significantly, especially in tropi Most invasive species reproducing sexually and the high ratio of animal-pollinated mean there is a competition for pollinators among invasive and native plants, This will definitely affect reproduction of native plants, thus causing serious problems to local ecosystem