关键词: 土地价格, 土地出让金, 土地调控政策, 关键点, 实物期权

Abstract: Analyzes the mechanism of land price and the relationship between land price and land concession expense especially the effects of land concession expense and its time-dependent readjustment policy on land price. Assuming that the readjustment policy of land concession expense remains unchanged, it is found theoretically that there is a key point in both the policy and land concession tenure, and the key point has been verified via practical data. Taking the key point as a reference, the validity of land policies can be actually proved. Under conditions that the policy of land concession expense is readjustable and also uncertain, the way to readjust the land concession policy is discussed on the basis of real options in discrete state, thus providing some suggestions for the validity of land policies.