Study On The Water Quality Response And Health Management Of The Nanming River In The Process Of Urbanization In Guiyang City

The Nanming River,which is Guiyang people’s mother river,shapes the urban form of Guiyang city.With the acceleration of the urbanization process in Guiyang,Some minor,non-mainstream rivers in the Nanming River system are continuously channeled and artificial,which makes the trend of the river network structure simplification and backbone become more and more obvious,and thus the poor flood discharge,ecological environmental degradation and other secondary environmental problems occur frequently,and it will increase with the increase of human activities,directly lead to urban water resource crisis,urban water system health damage,destruction of ecological balance,and thus threaten the sustainability of urban human living space.In order to identify the existing problems in the water environment of the Nanming River in the process of urbanization,reveal the law of water quality evolution of the Nanming River under the background of urbanization,and put forward the ecological restoration measures of the Nanming River to improve water quality,this paper took the Nanming River in Guiyang as the research object to carry out water environmental problems diagnosis of the Nanming River in the process of rapid urbanization development,the water quality response of the Nanming River to urbanization,ecological restoration measures and health management research.The main research results are as follows:(1)Analysis of the development performance,characteristics,and process of urbanization in Guiyang.A comprehensive analysis of the performance and characteristics of urbanization in Guiyang was made from the aspects of the population,economy,society,space.The development process of urbanization in Guiyang was summed up.(2)Revelation of the status of water quality of the Nanming River and the diagnosis of the root of the problem.Combined with the investigation of the scene and water monitoring data,the status of the water environment quality of the Nanming River was analyzed.The existing problems in the management of the river were revealed based on the reconciliation of the Nanming River Basin.On the basis of the comprehensive analysis of the present situation and the management situation of the water environment,the problems of the water environment of the Nanming River were identified and the root of the problem was diagnosed.(3)Exploration on the water quality response of the Nanming River to urbanization.In consideration of the complexity of the impact of urbanization on urban river and the ambiguity of the relationship between urbanization and water environment,the gray correlation degree method is used to calculate the T-type gray correlation degree between the water quality index of the Nanming River and urbanization factor by MATLAB programming language.The relationship between the index factors in the two systems was analyzed and discussed,and the key factors which influenced the water quality of different river sections of the Nanming River during different water periods,were selected,and the water quality response relationship of the Nanming River to urbanization was analyzed.(4)Put forward relative feasible ecological restoration measures according to local conditions.Combined with Guiyang city development planning and the Nanming River ecological management planning,taking into account the impact of urbanization on the Nanming River,drawing on the successful experience of home and abroad,and based on the Nanming River water conditions,some practical ecological restoration measures according to local conditions were put forward.(5)Exploration on the health management mode of the Nanming River system.Aiming at the main problems of ecological construction and health management of the Nanming River,draw lessons from domestic and international rivers management success experience,the health management model of the Nanming River was constructed,which can provide reference for the ecological water system construction,the scientific management and harmonious operation of similar water systems.