An ecosystem-level ecological risk assessment framework for lake watershed: A case study of upstream Taihu lake watershed

2015 ◽  
pp. 207-215
Author(s):  
N Li ◽  
J Qi ◽  
R Han ◽  
B Zhou ◽  
Y Huang
Keyword(s):  
Risk Assessment ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Taihu Lake ◽  
Assessment Framework ◽  
Ecosystem Level

scholarly journals Input-output model based ecological risk assessment for ecological risk management of watersheds: a case study in the Taihu Lake watershed, China

Water Policy ◽  
2017 ◽  
Vol 19 (3) ◽  
pp. 556-573
Author(s):  
Jianchuan Qi ◽  
Nan Li ◽  
Ping Yang ◽  
Bo Lai
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Taihu Lake ◽  
Input Output ◽  
Large Scope ◽  
Internal Interaction ◽  
Ecological Risk Management

To achieve advanced watershed ecological management, policy-makers have struggled to predict ecological impacts for a long time. As a process of ecosystem analysis, ecological risk assessment (ERA) has been widely adopted to analyse the possibility of adverse ecological effects. ERA has developed from considering only a few indicators in an area to multiple sources and receptors in large-scope regions. However, the transfer of risk in large-scope regions caused by internal interaction has not been deeply analysed, especially in regions with complex internal interaction structures. This would lead to extensive management, where watershed-level policies may not be fit for some subregions, thus leading to limited management efficiency. In this study, we integrate an Input-Output (IO) model into the Relative Risk Model (RRM), and propose an IO model based ERA (IO-ERA) methodology, which would reveal the intensity of ecological risk caused by local sources, direct water flows and indirect transfers. An IO-ERA is conducted in Taihu Lake watershed as a case study, in which we could demonstrate that IO-ERA is capable of providing advanced insights of risk analysis in large-scope regions. The outcome of IO-ERA would support watershed administration to transfer from single standard regulation to diverse, dynamic and lean ecological risk management.

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