中国

In this paper we demonstrated the area change of cultivated land in different periods of time since the establishment of new China, and investigated its main contributors since reform policy carried out in the end of 1970s. The results show that the area of cultivated land fluctuated sharply under different periods of time. While it depended heavily on the natural and social factors before the reform policy, the area change of cultivated land is mainly affected by the fast economy development after the reform policy. While the results show among the contributors of the decrease of cultivated land in recent years, constructions carried out by individuals, collectives and state are the leading factors. Furthermore, the area of cultivated land altered by rural individuals' constructions are positively correlative to the cash income of farm householders, and negatively correlative with the area of their housingholding. ln addition, the area of cultivated land transformed by rural collectives' constructions are positively affected by the magnitude of farmer's wage working, and the cQnsumption level of rural individuals. As well, the cultivated land area altered by the state's constructions is positively affected by the state budgetary investment as capital construction and the reform policies on the allocation system of urban state-owned land in 1990, but not significantly affected by Land Management Law of 1986. Key words: China, area of cultivated land, fluctuation, contributors.