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refers to a system for determining land value for taxation purposes under the Tokugawa shogunate of Edo period Japan, and expressing this value in terms of ''koku'' of rice.〔Nussbaum, Louis-Frédéric. (2005). ("Koku" ) in ''Japan Encyclopedia'', p. 549.〕 One 'koku' (roughly equivalent to five bushels) was generally viewed as the equivalent of enough rice to feed one person for a year. The actual revenue or income derived holding varied from region to region, and depended on the amount of actual control the fief holder held over the territory in question, but averaged around 40 percent of the theoretical ''kokudaka''. 〔, p. 14-15.〕 The amount taxation was not based on the actual quantity of rice harvested, but was an estimate based on the total economic yield of the land in question, with the value of other crops and produce converted to their equivalent value in terms of rice. 〔 The ranking of precedence of the daimyo, or feudal rulers, was determined in part by the ''kokudaka'' of the territories under their administration.〔 In 1650, the total ''kokudaka'' of Japan was assessed at 26 million ''koku'', with the Shogun directly controlling 4.2 million ''koku''.〔 ==See also== * Han system 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「kokudaka」の詳細全文を読む スポンサード リンク
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