《Table 3 Components of the SAM table》

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《中国直辖市社会核算矩阵数据集》

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It can be found that the 42 industrial sectors analyzed by input-output analysis in China basically correspond to five types of state-owned construction land，such as transportation land，industrial and mining land，and storage land，in the classification of land use status in China[5]（Table 2）.According to the division of construction land and the definition of the industry in the land classification，five industries，including information transmission，software，and information technology services in the input-output table can correspond to commercial service land.27 industries were compared with industrial and mining storage land.Seven industries，including scientific research and technical services，water conservancy，environment，and public facilities management，will be matched with public management and public service land.The real estate industry could be matched with residential land.42sections in the table have some overlapping fields，so it cannot fully correspond to the classification of land use status，such as the classification of warehousing.Since the warehousing industry and the transportation industry are merged into the transport，storage and post industry（code 30）in the input-output table of China，they cannot be separated.Here，warehousing industry refers to goods transportation，transit warehousing，and goods distribution mainly engaged in warehousing.Its main business belongs to the same category as transportation，so the transportation and storage industry were matched with transportation land.The special land in the state-owned construction land includes the land for military facilities，embassies，and consulates；the water area and water conservancy facilities in the construction land include the water surface of reservoirs，coastal beaches，and other land including idle land.Taking Beijing as an example，in 2012，the special land，water and water conservancy facilities land，and other land in Beijing were 3.33，6.83，and 0 hm2，respectively[6]，which accounted for a small proportion and were not closely related to the city’s social economy，so they were not included in the research scope.Since this dataset is mainly used to study the structure of urban construction land，the data for agriculture，forestry，animal husbandry，fishery，and corresponding agricultural land data in the input-output table are excluded.Other departments[1]and match the standard CGE model，including elements，residents，government，and summary departments.