Abstract
For a comprehensive understanding of Cangzhou nearshore reclamation project construction effect on Marine ecosystem health, the evaluation scope is divided into six areas. According to the spring monitoring data in 2017, the regional ecosystem health evaluation method is used to evaluate the health index, and five evaluation indexes including seawater environment, sediment environment, biological habitat, biological forms and organisms are selected. Studies have shown that: the seawater environment, sediment environment and biological forms in the Cangzhou coastal area were all healthy; biological habitats, organisms and marine ecosystems were Unhealthy or sub-healthy; Reclamation activities are associated with the deterioration of seawater quality and the reduction of benthic and plankton biomass. The destruction of biological habitats is the main reason for the low ecosystem health index. destruction of biological habitats is the main reason for the low ecosystem health index.
Highlights
For a long time, reclamation has been regarded as an important way to solve the shortage of land resources in coastal areas
Cangzhou nearshore index of seawater environment evaluation results are shown in table 4, from which it can be seen that, the seawater environment is in a healthy state, and the health index of area III is the lowest
The analysis shows that the increase of human activities in the reclamation area leads to the increase of the concentration of active phosphate and petroleum. resulting in the lower seawater environmental health index
Summary
Reclamation has been regarded as an important way to solve the shortage of land resources in coastal areas. At the same time of forming remarkable social and economic benefits, the disorderly, unrestrained and free reclamation brings serious negative impact on the Marine environmental resources in coastal areas [1,2,3]. From a single project in the early days to a largescale regional reclamation, the sea area is facing increasing risks of high pollution and Marine ecological damage while making remarkable progress. In order to rationally develop and utilize marine resources and protect marine ecosystem, it is urgent to carry out health assessment of marine ecosystem in the coastal areas of Cangzhou
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