Decision-Making of Green Space Utilization and Protection in Urban Fringe Based on Biodiversity Trade-Off

Haijiao Liu,Yan Song,Qing Liu,Yonghong Ma

doi:10.3390/su12041373

Abstract

Urbanization leads to the continuous expansion of urban built-up areas and the erosion of green space in urban fringe areas, leading to the continuous decline of biodiversity. Urban planners and managers need corresponding decision support tools to coordinate the contradiction between the utilization and protection of green space, ensure the maintenance capacity of biodiversity in green space, and realize the sustainable development of regional economy, society and ecology. Therefore, based on the Hellwig Method, this study designed a decision-making method of green space utilization and protection in urban fringe areas and applied the method to the decision simulation of single or multiple green space utilization and protection modes. In the decision simulation of a green space utilization mode, we evaluated the Hk values of one or several green space sample units, respectively. The smaller the Hk value, the smaller the influence of the green space unit on the biodiversity maintenance function of the whole green space in the region, so the green space unit can be selected first when making green space utilization planning decisions in the urban fringe. In the decision simulation of green space protection mode, the higher the Hk value of single green space sample unit combination or multiple green space sample unit combination, the greater the influence of the green space unit in the combination on the maintenance function of the overall green space biodiversity in the region. Then, when planning the green space protection in the urban fringe, the combination of such green space sample units should be given priority as the key protection and control objects. As a decision support tool for optimal scheme of green space utilization and protection in urban fringe areas, the method is practical, instructive, reasonable, operable, flexible, and universal.

Highlights

The world is becoming more and more urbanized
In the “Long-Term Planning”, green space sample unit 4 is planned as storage land, green space sample unit 5 is planned as residential land, green space sample unit 6 is planned as external traffic land, green space sample unit 7 is planned as commercial and financial land and public green area, green space sample unit 8 is planned as scenic area, green space sample unit 9 is planned as public green area, green space sample unit 10 is planned as residential land
Compared with the simulation results of the above single or multiple green space utilization models, it is obvious that not all the green space sample units in the current downtown vicinity are suitable for the construction with the goal of minimizing biodiversity loss

Summary

Introduction

The world is becoming more and more urbanized. From 2000 to 2030, the area of the global urban built-up areas will triple [1], mainly occupying the green space at the urban fringe [2,3]. Green space has a variety of positive impacts on the quality of life, health, and well-being of human beings. It has the functions of economic production, land support, aesthetics, leisure, and entertainment [10,11,12] and provides potential habitats for species and has the function of maintaining biodiversity [13,14]. Under the background of rapid urbanization and the development mode diversification of green space in urban fringe areas, urban planning and managers need corresponding decision support tools to coordinate the contradiction between the utilization and protection of green space, ensure the maintenance capacity of biodiversity in green space, and realize the sustainable development of regional economy, society, and ecology

Methods

Results

Conclusion