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土地是重要的生产和生活的人力资源，土地是有限的，不可再生的，但随着经济的发展和城市的发展，土地资源的需求不断增加，使有限的土地，以满足我们无限的需求，我们需要必须是合理和有效地利用。改革开放以来，中国经济一直保持一个快速的发展步伐，工业化，城市化水平增加明显，高对土地的需求所造成的快速经济增长，导致建设用地的迅速扩张，耕地减少。

Land is essential for the production and life of human resources, and land is limited and non-renewable, but with the economic development and urban development , the demand for land resources is increasing , to make limited land to meet our unlimited demand requires that we must be rational and effective use . Since reform and opening , China's economy has maintained a rapid pace of development, industrialization, urbanization level increased significantly, rapid economic growth caused by the high demand for land , leading to the rapid expansion of construction land , declining arable land ( Wu Yuling and Qu Futian , 2007 ) . During 1985 to 2008 , a total area of arable land decreased 346.4 × 104hm2, average annual reduction of 15.06 × 104hm2 ( Wuze Bin et al, 2009 ) . At the same time , the phenomenon of inefficient use of land resources, but to some extent there is an urgent need to carry out related research , extensive use of land resources change the status quo, in order to achieve optimal allocation of land resources and economic and social development of effective ( Liu Jin Medium , 2010 ) .

由于中国的经济发展，人口向城市，尤其是在大城市的趋势是越来越清晰的焦点，城市也在迅速扩大规模，主要是在城市建设用地扩张，扩大城镇人口，城市经济增长的区域。一直以来，政府更专注于纯粹的经济增长，人口增长，城市地区是毫不夸张，严格控制，长此以往会导致城市土地利用和经济发展的不平衡.

As China's economic development, population to the cities , especially in large cities the trend is increasingly clear focus , the city is also rapidly expanding scale , mainly in the area of urban construction land expansion , the expansion of the urban population , urban economic growth . The Government has been more focus on purely economic growth, population growth in urban areas is no exaggeration and strictly controlled , the long run will lead to urban land use and economic development imbalance ( Hua Wei et al, 1998 ) . As from 1996 to 2005 , the national urban non -agricultural population increased from 1.89 × 104 2.37 × 104 million people , the annual average growth rate of 2.5 percent , but the city has built-up area at an average 5.41 percent pace, expanding from 20214km2 to 32521km2, its non-agricultural population growth rate 2.16 times ( Liu Wei and others, 2008 ) . The process of urbanization has led to the issue of urban land use extensive waste to volume ratio , for example, in 2005 the national average for all cities volume was only 0.51 , towns less than 0.2 , while in some countries or regions around the city's capacity rate at between 1 and 2 ( Liu Wei , 2006 ) . Difficult to find in the rapid economic development, land-use low efficiency problem has been ignored, specifically: waste of land resources , idle serious , in 2004 over 6000 nationwide merge zone , an area of 60,000 km2, the Pearl River Delta areas even various development area is greater than total land area ; Jiangsu Province undo various development zones 566 , subtract the planning area 2657.14km2. Just a decade the country appeared more than 500 university city , generally covering several acres , Langfang "Oriental University City " in addition to a large number of University City real estate development outside the building , and even occupy 6007 acres, of which 5728 acres of farmland construction 5 standard golf course . Less land per unit of output , allocative efficiency is low, in