江苏省外来种子植物的初步调查和分析

对江苏省外来种子植物的种类、来源地及分布状况进行了初步调查统计。调查结果显示，江苏省共有外来种子植物393种，大多数来源于欧洲和美洲，主要通过有意引种和无意引入2种方式引入。有意引种的栽培植物有276种，其中观赏植物132种、蔬菜46种、林木35种、工业原料植物17种、药用植物12种、牧草植物11种、粮食作物11种、果树7种以及油料作物5种。另外，外来种子植物中有逃逸种62种、归化种22种、入侵种33种；81．8％的入侵种在江苏全省均有分布；入侵种以菊科（Compositae）和禾本科（Poaceae）植物为主，分别有11种和7种。在此调查结果基础上，对江苏省外来种子植物的分类和危害进行了讨论，并对江苏省外来物种的利用和管理提出了一些建议。

Preliminary investigation and analysis on exotic spermatophyte in Jiangsu Province

The species, original regions and distribution range of exotic spermatophyte in Jiangsu Province were primarily investigated. The results show that there are 393 species of exotic spermatophyte and most of them are introduced from Europe and America through either intentional or unintentional introduction ways. There are 276 species of cultivated plant introduced intentionally, including 132 species of ornamental plant, 46 species of vegetable, 35 species of tree, 17 species of industry plant, 12 species of medicinal plant, 11 species of forage grass, 11 species of food crop,7 species of fruit tree and 5 species of oil crop. Moreover, there are 62 species of escaped plant, 22 species of naturalized plant and 33 species of invasive plant in Jiangsu Province, and 81.8% of invasive species distribute in all over the province. Most of invasive plants belong to Compositae （11 species） and Poaceae （7 species）. Based on those results, the classification and harm of exotic spermatophyte are discussed and some suggestions about utilization and management of exotic spermatophyte in Jiangsu Province are put forward.