Efficiency Evaluation Of Farmland Conversion In Urbanization

With the acceleration of urbanization, lots of agricultural lands have been transformed into construction lands. The fierce conflict between population and lands in China requires more strengthen management so as to use lands resources more efficiency, it is important to evaluate the efficiency of farmland conversion. The lands’ urbanization is closely linked to the urbanization of labor、population and industrial structure, this thesis tries to take them into a unified system.This thesis takes efficiency measure as a starting point, use instruments of management science to measure the efficiency and analyze the driving factors of farmland conversion of it. The main research work and conclusions include the following aspects:(1)First review the history of the farmland conversion of China. Then use LMDI to make decomposition analysis of the driving factors of farmland conversion, calculate the influence of output effect、structural effect and efficiency effect to farmland conversion. The empirical results indicate that output effect is the main driving factors of farmland conversion, efficiency effect has an offset effect and structural effect has a negative impact on land use efficiency. At last use STIRPAT model to analyze the effects of population、affluence and industrial structure. The results indicate that population has a positive effect on the farmland conversion while affluence and industrial structure have negative effects on it.(2) Use TOPSIS to measure the comprehensive utility efficiency of farmland and construction land. It shows that the comprehensive utility efficiency of farmland of Eastern China is higher than that of other parts of China; this means the opportunity cost of farmland conversion of Eastern China is higher than other regions. The comprehensive utility efficiency of construction land is quite different after take population into consideration than not; this indicates that it is necessary to consider population as an important indicator.(3)Use DEA to measure the efficiency of farmland conversion. First use CCR model to evaluate the efficiency that not considered population, then the efficiency considered population, at last propose the concept of opportunity cost of farmland conversion, take it as a constraint to build a SBM-DEA model based on undesirable outputs to evaluate the efficiency of farmland conversion which takes the opportunity cost into consideration. Analyze the difference among the three stages and find that while considering opportunity cost, the efficiency of farmland conversion of Eastern China becomes lower. Lastly, give suggestions to improve the efficiency of farmland conversion.