• 研究报告 •

### 黑、吉、辽、蒙归化植物分布格局及其影响因素

1. 1南开大学环境科学与工程学院， 天津 300350;2天津市跨介质复合污染环境治理技术重点实验室， 天津 300350; 3天津师范大学城市与环境科学学院， 天津 300387）
• 发布日期:2020-05-10

### Distribution patterns and influencing factors of naturalized plant species in Heilongjiang, Jilin, Liaoning, and Inner Mongolia.

LUO Li1,2, LI Long-qin1,2, XU Guang-yao1,2, YANG Hao-lu1,2, HE Meng-xuan3, LI Hong-yuan1,2*

1. (1College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; 2Tianjin Key Laboratory of Environmental Technology for Complex TransMedia Pollution, Tianjin 300350, China; 3College of Urban and Environmental Science, Tianjin Normal University, Tianjin 300387, China).
• Published:2020-05-10

Abstract: Based on field investigation and data collection, we estimated the distribution pattern and driving factors of naturalized plant species in 48 prefecturelevel cities in four provinces (Heilongjiang, Jilin, Liaoning and Inner Mongolia) of Northeast China. We found 370 species from 239 genera and 70 families of naturalized plant species in this area. Among those species, Asteraceae, Poaceae and Fabaceae had the largest proportion of species. About 70% of the naturalized species were introduced artificially, with Europe as the largest source area. There was substantial spatial variability in species diversity, with a decreasing trend from east to west in prefecturelevel cities. Naturalized 〖HJ*5〗species distributed more in capital cities or coastal cities, such as Shenyang, Harbin, Hohhot and Dalian, while less distributed in plains and grasslands. GDP, land use intensity and mean annual temperature were major driving factors. By Logistic fitting, we found that the number of naturalized species in our study region tended to be stable. However, more exotic plant species may be introduced in the future with the implementation of “Northeast Revitalization” policy, which should be paid more attention.