NDLI: Dynamics of ruderal species diversity under the rapid urbanization over the past half century in Harbin, Northeast China

Content Provider	Springer Nature Link
Author	Chen, Xiaoshuang Wang, Weibo Liang, Hong Liu, Xiaoli Da, Liangjun
Copyright Year	2013
Abstract	Urbanization has resulted in obvious changes in plant species diversity. We analyzed the dynamics of ruderal species diversity in Harbin over the past half century using historical data collected in 1955 and data of the present spatial distribution in 2010–2011. The results show that, the number of ruderal species decreased from 611 to 175 with remarkable tendency of decreasing in perennial species and increasing in winter annual species in the past half century, which caused the shift of life form spectrum from perennial mono-dominant type to summer annual and perennial co-dominant type. Meanwhile, the proportion of tropical originated species increased and the proportion of temperate originated species decreased which were considered to relate with the increase of temperature in urban area during the past half century. Moreover, there was a distinct decrease of the proportion of aquatic and hygrophytic ruderal species while an increase of mesic and xeric ruderal species which suggested a drought trend in urban habitats that consistent with the change of land use characterized as decrease of natural water bodies and wetlands and increase of urban land. Comparison of ruderal species along urbanization gradient also got the similar results with the above results from analysis on temporal scales and confirmed the effect of urbanization on decreasing plant richness. Our results suggested that land use change combined with its effect on temperature and disturbance regimes in urban habitats preferred species with short life span, high drought tolerance, fast growth rates and high seed yields.
Starting Page	455
Ending Page	472
Page Count	18
File Format	PDF
ISSN	10838155
Journal	Urban Ecosystems
Volume Number	17
Issue Number	2
e-ISSN	15731642
Language	English
Publisher	Springer US
Publisher Date	2013-11-06
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Land use change Urbanization gradient Species diversity Adaptive strategy Urban Ecology Environmental Management Ecology Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Ecology Urban Studies

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