| It is an effective means to improve the efficiency of water resources utilization and optimize the management of water resources to transfer the agricultural surplus irrigation water to other areas or departments through water right trading.However,the reduction of irrigation by the transferor is likely to lead to some external problems,resulting in the decline of local ecosystem services and economic,social and ecological environmental losses.The key to ensure the efficiency,fairness and sustainable development of water markets is to scientifically identify,quantify and reasonably compensate the transferor’s external losses.This paper takes agricultural water rights trading as the research object,and carries out the research on the eco-economic compensation structure system and quantitative method of agricultural water rights trading.The main work contents and results are as follows:(1)Based on the related concepts of water rights trading,this paper analyzed the practice mode and characteristics of water rights trading in China,and defined the definition and connotation of agricultural water rights trading;based on the eco-economic system of agricultural water rights trading from the perspective of the transferor,and guided by the theoretical basis of ecological economic compensation,the connotation of ecological economic compensation of agricultural water rights trading was identified by considering the influence of water rights trading on the structure and function of the system.(2)On the basis of water,energy conversion and internal relation of the change of the ecological flow in the system,the transaction of water energy conversion law and under the action of agricultural water-saving water rights trading economy,society and ecological environment each subsystem ecological flow change process was analyzed,and energy system diagram,clear energy flow change on the influence of system structure and function of process was constructed;based on the corresponding relationship between the change of ecosystem flow and the change of utility,the “energy-utility” transformation process of economic,social and ecological environment system after water-saving agricultural water rights trading was analyzed,and the formation mechanism of eco-economic compensation for agricultural water rights trading was revealed.(3)On the basis of mechanism analysis,combined with the externality theory,the economic,social and ecological environmental losses of the transferor caused by the change of system utility were clarified,and the eco-economic compensation system of agricultural water rights trading was established.Using emergy theory and analysis method,according to the characteristic factors of eco-economic compensation of each subsystem and the change of energy loss of the system,a quantitative method system of eco-economic compensation of agricultural water rights trading including economic,social and eco-environmental compensation was put forward.(4)Taking Dongyang-Yiwu water rights trading as an example,this paper calculated the amount of economic,social and eco-environmental compensation in Dongyang City from 2012 to 2019,determined the amount of ecological and economic compensation,and analyzes and discusses the results by using the quantification method of ecological and economic compensation energy of agricultural water rights trading proposed in this paper... |
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