Research On Economic Efficiency Of Urban Industrial Land Used In Guangdong Based On Undesirable Outputs

Land is scare, important and non-renewable resource. Utilization of land is not only related to the development of economic, but also an important impact on the ecological environment. Moreover, effective use of land is of great significance. Industrial land, as an important land utilization form, is a strong support of national economic development, but also an effective way to improve the utilization efficiency of land. Previously, researches on the efficiency of industrial land pay more attention to its economic output while ignored the noise, pollution and other environment problems that industry brought. Therefore, how to measure the economic and environment of industrial land would be the focus of our study.Firstly, our study carries on the qualitative analysis about economic development, industrial development, and pollution of Guangdong province, then we applies data envelopment analysis method which based on slack variable model(SBM) to measure the data of 21 cities in Guangdong province from 2012 to 2014. At the end of our study, we carry on the quantitative analysis of industrial land use efficiency of Guangdong province, and put forward some suggestions.Here are our main results:(1)Analysis that based on the slack variable DEA model is more close to the practical situation of industry. Based on SEM model, we find that the result of considering the desirable output is more disappointed when compared with that of not considering the desirable output. Actually, such result is more consistent with the current situation of Guangdong province in the third chapter.(2)In Guangdong province, when we consider the desirable output, the efficiency is lower than that without considering the desirable output.(3)The scale efficiency of the overall industrial land in Guangdong province is low. In the pearl river delta region, centralized industry and sufficient funds make its scale efficiency become higher than the entire province average level while other regions are still as low as the overall scale efficiency.(4)In order to improve the utilization efficiency of industrial land in Guangdong province, we suggest to reduce the Undesirable-Output-Model results show that there is no shortage in economic output of cities in Guangdong province, however, the emissions of “three wastes” are high. Hence, reducing the emissions of the industrial “three wastes” is the main way to improve the utilization efficiency of industrial land.