Spatial Distribution Characteristics Of Economic Value Of Water Resources And Its Influencing Factors In The Yellow River Basin

The Yellow River is an important water source of the northwest and north China.To do a good job in the protection and management of the Yellow River is of great strategic significance to promote the high-quality development of China's economy and society.The Yellow River basin covers a vast area,involving 66 cities(prefectures and leagues)in 9 provinces,and the value of water resources in different regions and different water use departments is different.It is of great theoretical and practical significance to study the spatial distribution of economic value of water resources of the Yellow River Basin and its influencing factors for realizing the rational allocation of water resources and promoting the efficient and rational utilization of water resources in the basin.This paper is based on the"13th five year plan"national key research and development project"comprehensive value assessment of river basin water resources"(2017YFC0404404).This paper taking the Yellow River Basin as the research object,combining the ecological economics and spatial econometrics methods,studies the quantitative system of the economic value of water resources in the Yellow River Basin,uses the spatial autocorrelation analysis method and spatial regression model to explore the spatial distribution of the economic value of water resources and its influencing factors,in order to achieve a new understanding of the value-based allocation of water resources,and to provide a scientific basis for comprehensive management of water resources in the basin.(1)The economic value of water resources in the Yellow River Basin was evaluated by emergy method.The economic value of water resources is divided into water resources industry,agriculture,construction industry and service industry according to the division of industrial structure and the difference of water users.According to the characteristics of water resources in the river basin,this paper puts forward a method to measure the economic value of water resources based on emergy,and realized the quantification of the economic value of water resources in the cities of the river basin.The industrial production value of water resources is 16.30-26.91yuan/m~3;the agricultural production value of water resources is 4.01-6.10 yuan/m~3;the construction industry production value of water resources is 6.05-9.24 yuan/m~3;the service industry production value of water resources is 10.12-16.76 yuan/m~3.It lay the foundation for the analysis of the spatial distribution characteristics of the economic value of water resources in the basin.(2)The spatial autocorrelation theory was introduced to analyze the spatial distribution characteristics of economic value of water resources in the Yellow River Basin.From the perspective of global spatial autocorrelation,the overall spatial correlation degree of economic value of water resources in river basins was analyzed.From the perspective of local spatial autocorrelation,the spatial correlation model and spatial aggregation location of economic value of water resources in different cities were investigated.There are"high high","low low","high low"and"low high"aggregation patterns in the spatial distribution of water resources economic value in the basin."high-high"aggregation is the main mode,which are mainly concentrated in the middle and lower reaches of the basin.It provided support for the research on the influencing factors of spatial distribution of economic value of water resources.(3)The spatial regression model is constructed to explore the influencing factors of the economic value of water resources in the Yellow River Basin.In view of the obvious spatial effect of the economic value of water resources in the river basin,the spatial regression model(spatial lag model and spatial error model)is used to analyze that the economic development level,system input and output,and natural geographical conditions all have certain influence on the economic value of water resources,but each factor has different influence direction,influence strength and significance.The driving mechanism of spatial distribution of economic value of water resources in the basin was revealed.