Based on three Landsat TM images of 1984, 1996, 2001 and one "Beijing-1" data obtained in 2005, the land use characteristic of Beijing between 1984-2005 was concluded.
利用1984年、1996年、2001年的陆地卫星TM影像和2005年的“北京一号”小卫星数据，得到北京市1984—2005年间的土地利用变化。
Urban land resources, with obvious assets characteristic, is an economic resources, we should research the optimality use of urban land from the Angle of economics.
城市土地资源具有明显的资产特性，属于经济资源，需要从经济学的角度来研究其最优利用。
Land use right that comprises occupying right, using right, profiting right, as well as disposing right has the basic characteristic of assets and should be recognized as asset.
企业作为一个经济实体，其所获得的土地使用权已具备资产的基本特征，应将其作为资产予以确认。
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