Open Journal Systems

Urban biodiversity conservation planning integrating the analysis of green space structure and functional connection

Yang Liu, Xiaoyang Ou, Xi Zheng

Article ID: 1855
Vol 3, Issue 1, 2022

DOI: https://doi.org/10.54517/ec.v3i1.1855
VIEWS - 101 (Abstract)

Abstract

The process of urbanization and population growth lead to the fragmentation of biological habitat and the loss of biodiversity. It is of great significance to use effective models and indicators to evaluate landscape connectivity and construct green space network for habitat restoration and biodiversity conservation. Taking Fengtai District of Beijing as an example, firstly, the optimal distance threshold of green space construction suitable for biological migration is discussed by using the connectivity index based on graph theory, and the source patches are selected according to the evaluation results of landscape connectivity. Secondly, the resistance surface is constructed by using the minimum cost path model, and the potential connection path of species migration is determined by Linkage Mapper tool. Finally, according to the relative importance of patch and corridor in the quantitative source of current density, the “pinch” area, which is very important to species migration, is identified, and the model recognition results are compared with the empirical observation results of remote sensing satellite map and bird abundance. The results showed that the ecological base of green space in the western part of the study area was good, which provided the main habitat for species, and the patch fragmentation of green space in the central and eastern regions was serious, so it was necessary to increase urban green space as a stepping stone for species migration in pinch areas. The circuit model focusing on species diffusion is introduced in the study, which makes up for the lack of urban green space network construction method at the level of biodiversity conservation, clarifies the present situation of habitat quality and the future development of green space network in Fengtai District of Beijing, and provides scientific reference for the optimization of regional green space pattern and biodiversity conservation planning strategy.

Keywords

landscape architecture; urban biodiversity; landscape connectivity; green space network; circuit theory

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