基于数据包络分析的农地城市流转效率研究

农地城市流转效率是衡量社会经济健康发展程度的重要指标,用于考察经济发展中农地资源的有效利用情况.尝试运用数据包络分析方法测算我国31个省区1999-2008年的农地城市流转效率.研究结果表明,1999-2008年我国农地流转的综合效率波动不大,基本保持在0.7～0.8左右的评价效率水平.从综合效率的构成来看,综合效率与规模效率的变化趋势基本一致,在一定程度上表明农地流转效率的波动主要是由规模效率变化引起的.纯技术效率有效的省区数量明显高于综合效率和规模效率有效的省区数量,但达到纯技术效率最优的省区数量有逐年减少的趋势.不同省区在不同年份中均存在城市建设占用耕地过度,土地资源利用效率低下的现象,可以通过投入数量、投入结构和产出数量等方面的适度调整来提升农地城市流转的效率.

A Study of Rural-urban Conversion Efficiency Based on Data Envelopment Analysis

Rural-urban conversion efficiency is an indicator used to measure economic development level andreflects the efficiency of utilizing cultivated land resources in the economic development.The rural-urbanconversion efficiency of China in 1999-2008is calculated using the method of data envelopment analysis(DEA).Results indicate that the rural-urban conversion efficiencies of 31provinces(districts)changed a little in 1999-2008,basically being between 0.7and 0.8.The rural-urban conversion efficiency and scale efficiency had the same change trend,which further shows that the change of the rural-urban conversion efficiency was mainly induced by scale efficiency.The number of provinces(districts)whose pure technical efficiency is efficient was higher than the number of provinces whose conversion efficacy and scale efficiency areefficient.However,the number of provinces with the optimal pure technical efficiency tended to decrease.The phenomena of over rural-urban conversion and low land use efficiency existed in all the provinces in allthe years.It can be concluded that the rural-urban conversion efficiency can be raised by adjusting investmentamount,investment structure and output quantity.