Urban Agglomeration Nitrogen Ecological Risk Assessment

Posted: 22 Jul 2019

See all articles by Yue Dong

Yue Dong

Beijing Normal University (BNU) - State Key Laboratory of Water Environment Simulation

Linyu Xu

Beijing Normal University (BNU) - State Key Laboratory of Water Environment Simulation

Date Written: July 20, 2019

Abstract

The nitrogen cycle of urban agglomeration ecosystems have been widely altered by human activities, which in turn cause the endangerment at the whole city level. Ecological risk assessment (ERA) is capable of modeling and quantifying the potential impact on ecosystems and their components initiated by human disturbance. In this study, a conceptual conversion of flow currency in network was accomplished, i.e. from the substance flow to the risk information flow. Based on the introduction of control allocation analysis and the estimation of the components’ sensitivities to the stressor, we developed a new type of network analysis for urban agglomeration ecological risk assessment-risk information network model. The nitrogen ecological risk information network in urban agglomeration was used as a case study, The initial ecological risks were calculated based on the changes of nitrogen, and the transmission of resultant risk between all functional components of the ecosystem was tracked. By incorporating both direct and indirect ecosystem interactions, the risk conditions of the whole ecosystem and its components were quantified and illustrated in the information networks.

Keywords: urban agglomeration, nitrogen metabolism, ecological risk assessment

Suggested Citation

Dong, Yue and Xu, Linyu, Urban Agglomeration Nitrogen Ecological Risk Assessment (July 20, 2019). Abstract Proceedings of 2019 International Conference on Resource Sustainability - Cities (icRS Cities). Available at SSRN: https://ssrn.com/abstract=3423193

Yue Dong (Contact Author)

Beijing Normal University (BNU) - State Key Laboratory of Water Environment Simulation ( email )

China

Linyu Xu

Beijing Normal University (BNU) - State Key Laboratory of Water Environment Simulation ( email )

China

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