摘要
以厦门市为例,利用大量调查数据,探讨城市植物种类结构的特征及植物多样性的潜在问题.结果显示,厦门市植物种类丰富,种类构成的特征明显.在调查记录到的467种植物中,国家级珍稀濒危物种只有6种.植物种的频度分布符合Logistic函数(R^2>0.99),其中1个科、1个属和25个种高于多样性管理的10/20/30准则.低频物种占总种数的81.5%,热带分布植物属占草本的72.4%及木本的72.3%.绿地野生草本植物经常遭受人为破坏,但依然占总种数的37.5%.绿地建设中应进一步重视低频及稀有物种的保护和物种构成的协调,通过有效的政策措施减少野生草本植物的人为破坏是提高城市生物多样性的有效途径.
As one of the foci of urban ecology,plant species composition provides a reference for revealing the mechanisms of urban plant diversity.Based on the abundant data of field observations,a case study was made of Xiamen so as to explore the characteristics of plant species composition and the potential problems in urban plant diversity.The results demonstrated that Xiamen supported a rich diversity of plants and the characteristics of species composition was obvious.A total of 467 plant species were recorded,of which only 6 were nationally rare or endangered species.The species frequency distribution of plants was fit by a logistic equation（R^2〉0.99）,and one family,one genus and 25 species were above the10/20/30 benchmark（Kendal et al.,2014）.Low frequency species accounted for 81.5% of all urban plant species,and tropical components accounted for 72.4% of the herb genera and 72.3% of the woody genera.Spontaneous herbs were much richer in species than woody plants,and accounted for 37.5% of all plant species,although they were frequently deliberately destroyed.Based on the above results,this paper concludes that reducing the human destruction of wild herbs through effective policies is an effective way to improve the biodiversity in cities and proposes that more attention should be paid to the protection of low frequency and rare species and the coordination of species composition in the construction of urban green spaces.
作者
赵娟娟
宋晨晨
刘时彦
ZHAO Juan-juan;SONG Chen-chen;LIU Shi-yan(School of Horticulture and Landscape Architecture,Southwest University,Chongqing 400715,China;Key Laboratory of Urban Environment and Health,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen Fujian 361021,China)
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第7期1-8,共8页
Journal of Southwest University(Natural Science Edition)
基金
国家自然科学基金项目(41301612
41671515
51408584)
中央高校基本科研业务费专项(SWU115090)
关键词
城市绿地
生物多样性
区系地理分布
物种频度分布
优势植物
urban green space
biodiversity
chorological spectra
species frequency distribution
dominant plant
