Drivers of spontaneous and cultivated species diversity in the tropical city of Zhanjiang,China |
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| Affiliation: | 1. Key Laboratory of Tropical Biological Resources of Ministry of Education, College of Tropical Crops, Hainan University, Haikou, 570228, China;2. School of Life Science and Technology, Lingnan Normal University, Zhanjiang 524048, China;3. Department of Botany and Zoology, Masaryk University, Brno, 611 37, Czech Republic;4. Department of Biology, Algoma University, Sault Ste. Marie, Ontario, P6A 2G4, Canada;1. Centre d''Ecologie et des Sciences de la Conservation (CESCO, UMR7204), Sorbonne Université, MNHN, CNRS, UPMC, CP135, 61 rue Buffon, 75005 Paris, France;2. Faculty of Engineering, Lebanese University, Tripoli, Lebanon;3. Water & Environment Science Laboratory, Faculty of Public Health, Lebanese University, Tripoli, Lebanon;1. Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China;2. Department of Biology, Algoma University, Sault Ste. Marie, Ontario, P6A 2G4 Canada;3. School of Forest Resources & Conservation, Fort Lauderdale Research and Education Center, University of Florida, Davie, FL 33314;4. Beijing University of Civil Engineering and Architecture, No. 1, Zhanlanguan Road, Xicheng District, Beijing, 100044, China;5. The Key Laboratory for Urban Geomatics of National Administration of Surveying, Mapping and Geoinformation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China;1. Laboratory of Beijing Urban and Rural Ecological Environment, Beijing, China;2. National Engineering Research Center for Floriculture, Beijing, China;3. College of Landscape Architecture, Beijing Forestry University, Beijing 100083, China;1. Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China;2. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan, 666303, China;3. College of Mechanical and Electrical Engineering, Hainan University, Haikou, Hainan, 570228, China;4. Department of Biological and Environmental Sciences, Concordia University of Edmonton, Edmonton, Alberta, T5B 4E4, Canada;1. CNRS UMR 7324 CITERES, Ecole de la nature et du paysage – INSA Centre Val de Loire, 9 rue de la chocolaterie, 41000 Blois, France;2. CNRS UMR 6553 ECOBIO, Rennes 1 University, France |
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| Abstract: | Urban plant diversity influences the social functioning and well-being of urban dwellers. However, the patterns and drivers of plant diversity in tropical urban areas are still not entirely understood. In response to the knowledge deficiencies in this area, we investigated spontaneous and cultivated plant richness and their phylogenetic diversity and relatedness in 260 Urban Functional Units (UFUs), which represented nine different land use types according to anthropogenic function, in the tropical coastal city of Zhanjiang, China. Plant diversity was modelled as a function of UFU characteristics and human maintenance practices. Spontaneous species richness was highest in urban villages and vacant lands and lowest in transportation areas, while phylogenetic diversity was highest in utilities and lowest in parks. In comparison, cultivated species richness was highest in multi-family residential areas and lowest in vacant lands, while phylogenetic diversity of cultivated species was highest in commercial/industry areas and lowest in agriculture areas. The number of cultivated species and the degree of phylogenetic relatedness of spontaneous species were positively correlated with the human population density. The phylogenetic diversity of cultivated species within UFUs was generally higher than that of spontaneous species. Human maintenance of landscapes acted as an environmental filter for spontaneous species, but also promoted the number of cultivated plants. We conclude that appropriate investment in urban green areas may improve both plant species richness and phylogenetic diversity in urban environments. |
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| Keywords: | Biodiversity drivers Landscape maintenance Tropical coastal city Urban functional units Urban plant diversity |
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