应用生态学报2017，Vol.28Issue(6)：1843-1850,8.DOI:10.13287/j.1001-9332.201706.020
滦河流域河岸带入侵植物分布特征及其与环境的关系
Distribution pattern of riparian invasive plants in Luanhe Basin, North China and its relationship with environment
摘要
Abstract
In this study,the invasive plant species from the riparian vegetation in 56 sampling sites of Luanhe Basin were identified,and the correlations between their composition,spatial distribution and environmental factors were explored.In the basin,a total of 26 invasive species were registered,which belonged to 19 genera and 12 families,and 73.1％ of them were annual plants.Asteraceae and Amaranthaceae were the two dominant families with the most invasive species,attributing to 50％ of the total invasive species.Amaranthus retroflexus,Bidens frondosa and Chenopodium serotinum appeared with the highest frequencies.The number of invasive species and the invasive intensity at each site were significantly negatively correlated with the altitude.The distribution of invasive plants was significantly influenced by the intensity of human activities.The invasive plants were mainly distributed in the plain area,shallow mountainous area with many reservoirs,and the mountainous area with developed tourism around Chengde City,meanwhile,only few species with broad ecological amplitude existed in the plateau area.In general,species with higher invasive grades were mainly distributed in low and medium altitude areas below 400 m.Except for A.retroflexus,no high-grade invasive plants were discovered in high altitude area so far.关键词
入侵植物/河岸带/滦河流域/海拔/人类活动Key words
invasive plant/riparian zone/Luanhe Basin/altitude/human activity引用本文复制引用
任颖,何萍,徐杰,贾娇..滦河流域河岸带入侵植物分布特征及其与环境的关系[J].应用生态学报,2017,28(6):1843-1850,8.基金项目
本文由“十二五”国家水体污染控制与治理科技重大专项(2012ZX07203-006)资助 This work was supported by the 12th Five-Year Plan of Major Science and Technology Program for Water Pollution Control and Treatment (2012ZX07203-006). （2012ZX07203-006）
