1.建设项目投资构成 建设项目投资构成包括:项目论证费I_f,土地使用费I_l,项目评估费I_i,城市建设基础设施配套费I_c,勘察设计费I_d,房屋施工费I_b,设备费I_e,监理费I_m,项目内环境建设费I_p,业主管理费I_h,税金I_t和其他费用I_o。 2.建设项目主要投资随时间的变化 (1)土地使用费I_l。土地使用费可分为3个阶段,第一阶段为九十年代上半期(约1985年前),土地由国家划拨给企业无偿使用,包括征地和补偿均由国家承担;第二阶段约为1985～2002年,土地按政府规定的地级差有偿给 1. Investment Composition of Construction Project The investment structure of the construction project includes project demonstration fee I_f, land use fee I_l, project evaluation fee I_i, urban construction infrastructure supporting fee I_c, survey and design fee I_d, house construction fee I_b, equipment fee I_e, supervision fee Fee I_m, project construction costs I_p, owner management fees I_h, taxes I_t and other expenses I_o. 2. Construction projects major changes over time (1) land use fees I_l. Land use fee can be divided into three stages, the first stage for the first half of the nineties (about 1985), the land allocated by the state to enterprises free of charge, including land acquisition and compensation borne by the state; the second stage is about 1985 ~ In 2002, the land was paid according to the prefectural level prescribed by the government