Adaptable Landscape Pattern Strategy For Non-point Source Pollution Control In Shenfu New Town In The Process Of Urbanization

With the acceleration of the urbanization process in China,the impact and destruction of human activities on the surrounding natural environment are increasingly aggravated,and the landscape pattern has undergone tremendous changes.As an important part of the natural environment,the river's water pollution has always been a focus of attention in urban development.In the point source pollution and non-point source pollution that cause water pollution problems,the non-point source pollution has received widespread attention due to its wide spatial and temporal distribution,large spatial differences,strong uncertainties,and complex and variable migration processes.The Control of non-point source pollution has become a key task in the process of urbanization.The study of landscape pattern optimization has always been one of the core aspects of landscape ecology research.The problems of non-point source pollution and other ecological environmental problems that have occurred in the process of urbanization are in fact closely related to the change of landscape pattern.Shenfu New Town is still at the initial stage of development.How to achieve a win-win situation in the development of urbanization and good ecological functions in future urban construction is a question worth considering.Therefore,in the study of urban non-point source pollution control,we have to propose the specific optimization methods to provide ecological environment for Shenfu New City based on the theory of landscape ecology,through the study of the relationship between non-point source pollution and landscape patternsThis paper takes Shenfu New City as the study area,and mainly carries out three researches:(1)Combining GIS and Fragstats analysis software,the four-year landscape types of Shenfu New City in 2006,2009,2011 and 2014 are divided into 6 categories,including arable land,woodland,grassland,urban construction land,rural residential areas and water areas.And then select 13 kinds of landscape pattern indexes to analyze the dynamic changes foe exploring the impact of urbanization process on landscape patterns;(2)Combining the non-point source pollution monitoring data provided by cooperative units,analyze the relationship between non-point source pollution and landscape patterns,including the relationship between urbanization and non-point source pollution,the relationship between landscape level index and non-point source pollution,and the relationship between landscape type index and non-point source pollution;(3)Based on understanding the current functional layout of the landscape pattern,an optimization strategy of "Critical Area Identification-Optimization Measures Selection—Landscape Pattern Adjustment" is proposed,and then construct a landscape pattern optimization system for the whole area of Shenfu New City,including the waterway corridors.,traffic corridors and greenery patches,combined with the“Shenfu New City Master Plan(2013-2030)".Then on the basis of the overall optimization system,a conceptual plan for the landscape pattern along the Hunhe River is proposed to provide reference for the protection of the water quality of the Hunhe River and the surrounding ecological environment.The thesis takes the topic of the author's participation as the topic,creatively combines the demonstration of science and technology of environmental engineering with the optimization of the traditional landscape pattern,and implements the technical strategies and indicators of the environmental profession into the visualization space based on the optimization concept of the sustainable landscape.It gives the scientific nature of landscape design,maximizes the economic benefits,ecological benefits,and social benefits of landscape design,and provides an important guarantee for the sustainable development of ecological settlement in Shenfu New Town.