Beta diversity of urban spontaneous plants and its drivers in 9 major cities of Yunnan province, China

Zhiwen Gao, Yingji Pan, Peter M. Van Bodegom, Ellen Cieraad, Dingliang Xing, Yanyi Yang, Tiyuan Xia, Xinyi Luo, Kun Song, Liangjun Da, Dan Malkinson

Research output: Contribution to journalArticlepeer-review

Abstract

Urbanization has significantly reshaped regional biodiversity structure globally. Previous studies suggested that urban communities of spontaneous plants are well adapted to the urban environment. However, a perspective of urbanization that accounts for the joint impacts of the current state (as expressed by urbanization intensity) and the historical progress of urbanization (as expressed by urbanization rate) to reveal the mechanisms underlying the biodiversity patterns of spontaneous plants in cities is still lacking. Here we present data and analysis of spontaneous plants sampled in 709 patches within 82 sites of built-up areas from nine cities distributed across climatic and floristic zones in Yunnan province, a biodiversity hotspot in China. We used the exponent (z) of a species accumulation curve (SAC) model to characterize beta diversity among patches in a site, and found a higher beta diversity of native species compared with non-natives, indicating that the species composition of native plants is more heterogeneous. The beta diversity of all species groups was best explained by the constant c of the SAC (a proxy of alpha diversity), followed by the urbanization intensity (as expressed by the proportion of sealed surface and patches’ Shannon diversity index), and urbanization rate (as expressed by the sealed surface expansion rate). Moreover, beta diversity of non-native species was additionally negatively correlated with altitude. Our results suggest that the interplay of natural environmental factors and human-induced urbanization shape diversity of urban spontaneous plants in Yunnan province. Our findings emphasize that urban spontaneous plants diversity is not only a reflection of the current state of urbanization, but also a consequence of historical processes of urbanization.

Original languageEnglish
Article number104741
JournalLandscape and Urban Planning
Volume234
DOIs
StatePublished - Jun 2023

Bibliographical note

Funding Information:
This research was funded by Major Program for Basic Research Project of Yunnan Province, China (202101BC070002), the Ministry of Science and Technology of China (2015FY210200-4), and ECNU Academic Innovation Promotion Program for Excellent Doctoral Students, Shanghai, China (YBNLTS2019-019). We are grateful to three anonymous reviewers for their constructive comments which helped improve this paper; we thank professor Enrong Yan from East China Normal University for his helpful suggestions for refining the manuscript; We thank Dr. Xiaoya Yu from Qiannan Normal University for Nationalities, and Mr. Xuwei Sun for helping with the species identification.

Funding Information:
This research was funded by Major Program for Basic Research Project of Yunnan Province, China ( 202101BC070002 ), the Ministry of Science and Technology of China ( 2015FY210200-4 ), and ECNU Academic Innovation Promotion Program for Excellent Doctoral Students, Shanghai, China ( YBNLTS2019-019 ). We are grateful to three anonymous reviewers for their constructive comments which helped improve this paper; we thank professor Enrong Yan from East China Normal University for his helpful suggestions for refining the manuscript; We thank Dr. Xiaoya Yu from Qiannan Normal University for Nationalities, and Mr. Xuwei Sun for helping with the species identification.

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

  • Beta diversity
  • Biodiversity hotspot
  • Historical urbanization process
  • Spontaneous plants
  • Urbanization rate

ASJC Scopus subject areas

  • Ecology
  • Urban Studies
  • Nature and Landscape Conservation
  • Management, Monitoring, Policy and Law

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