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作者

Zhiwen Gao;Kun Song;Yingji Pan;Dan Malkinson;Xijin Zhang;Bo Jia;Tiyuan Xia;Xueyan Guo;Hong Liang;Shasha Huang;Liangjun Da;Peter M. Van Bodegom;Ellen Cieraad

来源

URBAN FORESTRY & URBAN GREENING,Vol.61,Issue1,Article 127098

语言

英文

关键字

Species richness;Spontaneous plants;Urbanization;Urban greening

作者单位

School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China;Shanghai Key Lab for Urban Ecological Processes and Eco‐Restoration, Tiantong National Forest Ecosystem Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China;Institute of Eco-Chongming, Shanghai, 200062, China;Institute of Environmental Sciences (CML), Leiden University, Einsteinweg 2, 2333 CC, Leiden, the Netherlands;Department of Geography and Environmental Studies, Shamir Research Institute, University of Haifa, Mount Carmel, Haifa, 3498838, Israel;Department of Science and Technology, Kunming University, Kunming, 650241, China;College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, China;School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China;Shanghai Key Lab for Urban Ecological Processes and Eco‐Restoration, Tiantong National Forest Ecosystem Observation and Research Station, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China;Institute of Eco-Chongming, Shanghai, 200062, China;Institute of Environmental Sciences (CML), Leiden University, Einsteinweg 2, 2333 CC, Leiden, the Netherlands;Department of Geography and Environmental Studies, Shamir Research Institute, University of Haifa, Mount Carmel, Haifa, 3498838, Israel;Department of Science and Technology, Kunming University, Kunming, 650241, China;College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, China

摘要

Urban green space provides refuges for species that are unintentionally introduced by humans and which do not belong to the remnants of natural habitats in urban areas. However, the quantitative relationships between urban green space properties and these spontaneous species are unclear. To address this, we surveyed plant species occurring in urban green patches in Kunming city, which is located in a biodiversity hotspot in southwest China. We classified spontaneous plants into native, non-native and invasive plant species. A total of 386 spontaneous species belonging to 278 genera and 92 families were recorded in 190 patches. Most of the recorded species were herbaceous plants (76.2 %). While invasive species constituted a relatively small proportion of the total species pool (17.9 %), six out of ten of the most frequently occurring species were invasive. Regression models inspired by the theory of Island Biogeography show that total, native, non-native and invasive spontaneous species richness in urban green patches were best explained by the size of the ‘island’ (patch area), dispersal limitations (as expressed by ‘distance to city boundary’) and edge effects (as shown by the landscape shape index). While the set of drivers of spontaneous plants is similar for the different groups of species, the relative importance of each driver varies among them. Our study provides quantification of drivers of biodiversity patterns in urban green space. Based on this understanding, planning and management of urban green space can be adapted to maximize spontaneous plant conservation in rapidly urbanizing biodiversity hotspot regions.