Based On The DEA Method Of Zhengzhou’s Urban Land-using Economic Effiiciency Evaluation

The economic efficiency of urban land-use reflects the ratio of urban input and output,and it hasthe direct effect on the socioeconomic development of the city. Referring to the domestic and foreignresearches on urban land use efficiency, this paper defines the economic efficiency of urban land use, andchooses the data envelopment analysis of similar units of input and output for the effective evaluation.According to the representativeness，comprehensiveness and availability of data, the paper selectsindicators on soil, capital and labor,Urban land use economic efficiency reflects the ratio of urban inputsand outputs,a direct impact on urban human settlement environment construction and social and economicdevelopment. Zhengzhou City, the contradiction between an increasingly prominent, year after yearincrease in construction land, shortage of the status of the land reserve resources, simply rely on large-scaleland investment to support economic growth, is neither realistic, nor can it. Improve the economy of thelimited land use efficiency to ease the shortage of land resources in Zhengzhou City, an important way. So,how to assess the land in Zhengzhou City, the use of economic inefficiency and how science to improve theeconomic efficiency of land use is the focus of this article.This article first summarized the research on the economic efficiency of urban land use at homeand abroad, summed up the basic theory of the economic efficiency of urban land use and the influence ofurban land use of the main factors of economic efficiency urban land use characteristics of the economicefficiency and urban land use economic efficiency research and analysis of the study area land useenvironmental conditions, and the city’s land use status. Followed by a comparative analysis of theprinciple advantages and disadvantages of the main methods currently used in urban land-use evaluation of economic efficiency, and select the best, most suitable for the evaluation, the final selection of inputs andoutputs of similar units in data envelopment analysis effectiveness evaluation. Accurate and reasonableassessment of the economic efficiency of urban land use, input indicators reflect the economic inputvariables of urban land use, and output indicators reflect the economic output variables of urban land use,the indicators selected in accordance with a representative, comprehensive, availability of the principle ofchoice, selected indicators from the three areas of land, capital, labor, build the DEA Evaluation ofZhengzhou City, land use economic efficiency index system. Finally, the DEA C2R model DEAP2.1software Zhengzhou City,12cities (Central Plains District, Erqi, tube city Jinshui, on the street, theeconomic benefits, Gongyi City, Xingyang Xinzheng City, Dengfeng City, the new city, Zhongmu)1999-2010city land use economic efficiency analysis and comparison as well as the land returns to scale,respectively, both in time and space to perform gap analysis, results show that:(1) From the time analysis of every city in Zhengzhou City,12years of land use changes ofeconomic efficiency, we can see that the land use economic efficiency of each city of Zhengzhou City, isrelatively high, inter-city land use economic efficiency is insignificant, land of Zhengzhou City, the overalleconomic efficiency showing "W" shape change, valid values of the average efficiency of the economicefficiency of land use in accordance with the various cities in descending order: Xinmi0.999Zhongmu0.996, Xingyang0.993Xinzheng City,0.991, Gongyi City,0.989, city pipe0.987, Zhongyuan District,0.983, Jinshui0.973, Dengfeng City,0.976, on neighborhoods0.973, Huiji District0.969, Erqi0.962.(2) From the spatial analysis of the12cities of Zhengzhou City in the same year the city’s landuse economic efficiency differences, see the economic efficiency of the different cities of the land use thereare some differences, level of efficiency values arranged in Zhengzhou City Area: Zhengzhou City area>area City area counties, as time goes on, we can see that the urban land use economic efficiency is growing. (3) Analysis of Zhengzhou City, the land returns to scale, the scale can be seen showing the statereturns to scale in increments of Zhengzhou City> area City area County, Zhengzhou City, the majority ofthe city’s land: by region.(4) From Zhengzhou City land use research, analysis of the economic efficiency of ZhengzhouCity land use of inputs, the output efficiency of factors, including the construction area to put too muchespecially, secondary and tertiary industries employing input redundancy, capital utilization rate. Resultingin the output value of the secondary and tertiary industries, GDP output is relatively insufficient.The input-output efficiency of the cities of Zhengzhou City, the land evaluation and impact factoranalysis, to understand the status of land use in cities and urban land use economic efficiency level of themain reasons, both in time and space, combined with problems in urban development proposed measures toimprove the economic efficiency of urban land, the development of relevant policies for the government toadjust and to reduce or to increase investment, optimize resource allocation to provide an effective basis.