Urban green infrastructure affects bird biodiversity in the coastal megalopolis region of Shenzhen city. (February 2023)

• Record Type: Journal Article
• Authors: Liu, Ziyu; Zhou, Yi; Yang, Haiyan; Liu, Zhenhuan
• Is Part Of: Applied geography. Volume 151(2023)
• Publication Date: 2023-02
• Subjects: Urbanization -- Green infrastructure -- Bird diversity -- Citizen science data -- Coastal city; Geography -- Periodicals; Human geography -- Periodicals; Human ecology -- Periodicals; 910
• DOI: 10.1016/j.apgeog.2022.102860
• Languages: English
• ISSNs: 0143-6228

Abstract

Abstract: Urban green infrastructure (UGI) is an important habitat for birds and acts a leading role in bird diversity conservation. However, the response of bird diversity to UGIs characteristics have not been well understood. Taking Shenzhen as an example, a dataset of bird records was compiled by several citizen science. We quantified the impact of environmental characteristics of UGI on bird diversity by the generalized additive model. Then, the clustering method was used to classify bird diversity bundles for identifying priorities of UGIs. The results showed that: (1) There are significant differences in urban gradients formed the spatial pattern of bird diversity. (2) There was mainly nonlinear relationship between the bird diversity and UGI environmental characteristic, with different response processes and thresholds. Area of UGI was critical for bird diversity, and an area of about 20 km 2 plays a relatively large role. Moreover, migratory birds were more sensitive to the negative impact of the surroundings of UGI, such as impervious surfaces and nighttime light. (3) The cluster analysis indicates that UGIs with better eco-environment were conducive to maintaining bird diversity. This study could be helpful to provide guidelines for the implementation of UGI planning and management and bird diversity conservation. Highlights: The bird diversity patterns show significant differences in the urban domain. The nonlinear responses of bird diversity to UGIs was explored by the GAM model. UGI's area was critical for bird diversity with an area of about 20 km 2 . Migratory birds are more sensitive to the impact of urbanization around the habitat.