摘要
北京外来植物是城市植物景观的组成部分,但同时对生态系统也造成了潜在的威胁。为了对北京市外来植物的有序管理和安全利用提供更多可行性建议,在对北京市近郊区郊野公园进行实地调查的基础上,分析外来植物的种类构成、传播途径、原产地、景观效果等以及其中入侵植物的现状。结果表明,北京市近郊区郊野公园外来植物种数总体比例为25.83%,低于建成区外来植物比例,入侵植物占外来植物的46.51%;外来植物优势科为菊科(Compositae)、苋科(Amaranthaceae)、禾本科(Gramineae),传播方式主要为种子自然掉落、人工携带栽植和风力传播,原产地集中在亚洲和北美洲。本研究对不具危害性外来植物的应用价值进行评价,并从预防评估、综合治理、生态平衡3个方面提出防控入侵风险的措施。
Under the background of globalization and urbanization,biological invasion has been given wide attention.In Beijing,alien plants are part of the plantscape in urban area,but at the same time,invasive plants have resulted in a great damage to the ecosystem.In order to offer some proposal to management and intelligent use of exotic plants in Beijing,an investigation about exotic species was carried out from the aspects of transmission,origin,visual effect of exotic plants and status of invasive plants.The results showed that the proportion of alien plants in Beijing country park in the suburbs was 25.83%,lower than that in built-up area,and invasive plants accounted for 46.51%of invasive plants.The dominant families of alien plants were Compositae,Gramineae and Amaranthaceae,main spread way was from the falling of natural seed,artificial carrying and wind carrying.The main origins were from Asia and North America.Then value of harmless exotic plants application was evaluated,and the measures to control the invasion risk were put forward from three aspects of prevention and assessment,comprehensive treatment and ecological balance.
作者
孙芳旭
张嘉琦
赵丹阳
董丽
SUN Fang-xu;ZHANG Jia-qi;ZHAO Dan-yang;DONG Li(College of Landscape Architecture,Beijing Forestry University,Beijing Laboratory of Urban and Rural Ecological Environment, National Engineering Research Center for Floriculture,Beijing 100083,China)
出处
《西北林学院学报》
CSCD
北大核心
2018年第5期278-284,296,共8页
Journal of Northwest Forestry University
基金
北京市林业外来物种调查与研究(AS-2016-01)
北京园林绿化增彩延绿植物资源收集、快繁与应用技术研究(CEG-2016)。
