IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Hydro-environment : Constructing an assessment indicators-system to evaluate the environment impact of tidal flats recla...
Constructing an assessment indicators-system to evaluate the environment impact of tidal flats reclamation on the coastal zones ¡ª a case in jiangsu, china
Author : Xindi Chen
Abstract:
As a combination between land and marine ecosystem, tidal flats build an indispens
able homestead to keep environment balance and maintain biodiversity. While coastal reclamation creates huge benefits by providing
a variety of resources for socio-economic development, it leads the tidal flats to witness a large number of human
activities. Therefore, we should first realize quantitative and qualitative analyses
of the aspects on what tidal flats reclamation will influence, based on which, integrated evaluation system can be built. Combined with the conceptual model of ¡°Driver-Pressure-State-Impact
-Response¡±, a framework links a layer model with indicators-system to assess integrated environment impact value in given space and time. The integrated approach
takes into account three physical layers reflecting the land and water use, the development of infrastructure, the
natural resources and base environment. Using a case study in Jiangsu coastal area in China, we assessed the
integrated environment impact value by comparing the states before and after the reclamation planning
implemented since 2009. The results indicate that (1) hydrodynamic conditions vary near projection areas, but little impact performs on whole
tidal system inshore as well as sediment transport and coastal evolution. Flow states of the flood and ebb tides almost remain the same as before. (2) Ecology resource suffers most pressure, but
it shows a recovery trend over time. Environmental pollution is also a critical indicator. (3) The integrated
environment impact values demonstrate that through infrastructure construction and governance, coastal
environment will stabilize the original equilibrium point to a new one. In this paper, the assessment indices system selects the most necessary ones among all the impacts according to Jiangsu tidal flats characteristics, but more
field data are waiting to be collected which requires more labor work in the future. The conclusions will provide base for the longterm accordance between economic development and ecosystem health.
File Size : 953,865 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 14/08/2015
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