The Analysis Of Input-output Efficiency In Xi’an Urban Green Space Direct Service Value

As a basic city infrastructure construction, urban green space not only has thefunction of beautifying the city environment, and people also pay more and moreattention to its economic value and social value along with the development of marketeconomy. However, due to the lack of understanding the value of urban green space,and green space industry itself can not or is difficult to produce direct economic benefits,as a result, there appears a larger problem in the measure of the market value of urbangreen space, only to becomes a work which just inputs but did not outputs.This alsoresulted in non-persistent construction of urban green space and inefficient green spaceinvestments. The value research and efficiency analysis of urban green space, andexploring urban green space market financing mechanisms can provide theoreticalguidance for the construction of urban green space,and can also provide theoreticalbasis and practical mode for the reform of urban green investment.First, this paper introduces the related concepts, function and significance of urbangreen space, and by using the basic principles of public goods and external effect, at thesame time drawing on relevant domestic and abroad researches on the urban greenspace ecological, economic, social and other value classification, through the analysiswe obtained a green space value of direct services for the city’s economic value of greenspace; by building an econometric model, which was separated from the total benefitsof urban green space, thereby obtaining green Xi’an GDP contribution value-the valueof direct services; then use data envelopment (DEA) model into input-output efficiency of urban green space research, evaluate the efficiency of direct services Xi’an Greenlandfrom2002to2011in order to measure the value of green space on the role of Xi’anGDP value, the results showed that: over the past decade, Xi’an direct service efficiencygreen is not ideal, especially in the low efficiency of nearly six years, the impact of themajor reasons is the low efficiency of green land investment is too little, so that capitaland labor resources underutilized and Xi’an the city does not track green building onsustainable development.Finally, based on the summary of domestic and foreign investment mode in theconstruction of urban green space, and through analyzing the principles of the positiveexternalities of beneficiary groups of the urban green space and the effective supply ofpublic goods, the paper proposes an investment mode that the government shouldwithdraw from investment dominant position, real estate and green space should jointdevelopment, which is trying to solve the shortage of funds and low investmentefficiency of the public sector in the whole.