China's rural economic reforms radically altered land tenure in rural China. With the granting of land use rights and residual income rights to farming households between 1979 and 1983, agriculture shifted from a collective-based to a familybased system. Land was not privatized, however. Ownership remained "collective", with local officials, typically at the village level, exercising a major influence over the allocation of land and the way households could use land. The initial land allocations to families were typically based on household size, household labour supply, or both. The central government's policy was that these allocations were supposed to be for 15 years. In some villages, land use contracts have been respected; in other villages, however, local leaders have periodically redistributed land among households and have intervened throughout the reform period to determine how farmers are able to use the land. The initial reforms triggered an unprecedented acceleration of agricultural growth in China. From 1979 to 1984, the gross value of agricultural output increased in real terms at an annual rate of 7.6 per cent, and grain production rose by 4.9 per cent annually.' Empirical studies attribute a significant part of this increase to enhanced incentives, as farmers were able to keep the output and