The Application Of Environment Assessment In The Landscape Reconstruction Of Cangzhou Canal

The Beijing-Hangzhou grand canal bears rich historical culture and urban characteristics,it is a representative landscape of Cangzhou.This article aims to study the application of environmental assessment method to the reconstruction of canal landscape belt so as to intuitively understand whether the reconstruction project is environmentally friendly and whether the reconstruction regional planning is reasonable.The existing landscape assessment methods usually start from the experience of the landscape,and the visual effect has a greater impact,while the results of the environmental assessment methods through the analysis of ecological data and calculation formulas have more practical significance for how to improve the health of the human living environment in the landscape area.Environmental assessment includes environmental impact assessment and environmental quality assessment.Environmental impact assessment shows that air quality in the region was the worst in the first quarter,mainly limited by SO₂.The quality of acoustic environment in the region is basically up to the standard,and the division of functional areas is unreasonable,which results in local excessive;At present,the main pollution indexes of the water body of the canal are BOD₅,TP and COD,which are organic pollution.The data of the water body of the canal from 2011to 2017 are compared.According to the changing trend of the water quality,the ecological quality of the canal after landscape reconstruction is gradually improved.Environmental quality assessment quantitatively analyzes the environmental quality in the canal landscape area by determining the assessment factors and corresponding weights.The assessment results reflect that the functional division and sorts of plants in the landscape area are not ideal.According to the above assessment results,targeted solutions are put forward to the existing problems,so that the urban canal landscape reconstruction project can achieve the effect of improving the beauty of the city and giving consideration to ecological and environmental protection.This can also serve as a reference in the future canal landscape reconstruction.