关键词: 土地整理, 投入产出, 效率评价, 中部土地整理区, DEA

Abstract: Land consolidation plays a key role in keeping the dynamic equilibrium of arable land and ensuring the target of farmland protection. It is of great significance to guarantee food security, relieve contradiction between human and environment, as well as promote the urbanization process and socio-economic development. However, as China's land consolidation history was very short, the undertaken land consolidation projects were mainly focused on the increase of cultivated area, while social and ecological benefits were ignored to a certain extent. Comprehensive evaluation lack of regional input-output efficiency was usually employed as a method for benefit assessment. In this paper, based on determining the input and output factors, in accordance with characteristics of multi-input and multi-output, DEA method was applied to calculate the input-output efficiency and to analyze the corresponding efficiency loss by taking central land consolidation region as DMU. The results are obtained as follows. 1) In general, land consolidation bears regularity and difference. All the provinces with advantageous agricultural production conditions have decreasing benefits to scale, regardless of the optimal value of input-output efficiency, whereas the situation in provinces with disadvantageous agricultural production is on the contrary. 2) Due to the differences of topography, soil, climate, and other agricultural production and ecological conditions, the efficiency between various provinces are quite different. Both input and output factors need to be modified in non-DEA efficient DMU, and there is significant difference in the extent of adjustment as well. 3) Due to scale differences and irrationality of input-output structure, the land consolidation output does not increase with the input. In addition to the provinces at low level of relative efficiency, such as Shanxi, Hubei and Anhui, the tendency is also observed in relatively efficient provinces

Key words: land consolidation, input-output, efficiency evaluation, central land consolidation district, DEA