Quantity plan - Ryoan (English spelling) yang-an; ryang-an

Japanese: 量案 - りょうあん（英語表記）yang-an; ryang-an

A land register from the Joseon Dynasty (Yi Dynasty) in Korea. It is also called a land register or a dokocho. The format of the land register is the survey year (zodiac sign), month and day, and the location of the fields. Every 5 knots are given a character code in the order of the Thousand Characters Classic. It records the order of surveying, the grade of the land, topography, knot (area), boundaries, names of landowners, names of farmers and their movements, fields, residential land, fruit trees, bamboo forests, dams, and other survey measurements. The land register was not only used to collect taxes on agricultural products, but also as a basis for labor and other public charges, and was the basic data for the entire finances. Land registers were already created during the Unified Silla period (→ Silla), and at the beginning of the Goryeo period, a three-grade system of fields based on soil fertility was seen. In 1069, the 23rd year of Emperor Munjong's reign, the land register was established for the measurement of fields (60 sun = 1 shaku, 6 shaku = 1 bu) and knots (1 knot is 33 bu squares). In the early Joseon dynasty, the land survey was made based on this system, but in 1444 (26th year of the reign of King Sejong), fields were divided into six grades, and the area of land was determined based on the fertility of the land, which was used as the basis for taxation. Nationwide surveys of cultivated land began in 1391 (3rd year of the reign of King Gongyang) in the late Goryeo dynasty, and in 1405 (5th year of the reign of King Taejong) in the Joseon dynasty. The Gyeonggukdaejeon states that cultivated land surveys and land surveys were made every 20 years, and that a portion of the land surveys were kept by the central government, provincial offices, and county offices, but in reality, they were only carried out in certain regions every few decades. The land surveys continued until 1938, with some revisions. The oldest existing land surveys are those of Haein-hyeon (Haebuk-myeon, Boeun-gun, North Chungcheong Province) made around 1669 (10th year of the reign of King Hyeonjong) of the Joseon dynasty, and although they have been found scattered around the southern provinces since then, they are extremely valuable as socio-economic historical materials.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

朝鮮，朝鮮王朝（李朝）の土地台帳。田案，導行帳ともいう。量案の形式は測量年（干支）月日，田畑の所在地名が表記され，5結ごとに『千字文』の順序に従う字号がつけられ，測量の順序，土地の等級，地形，結負（面積），境界，土地所有者名，耕作人名とその移動，田畑，宅地，果樹，竹林，堰堤などの測量計数が記録されている。量案は農産物の徴税のためだけでなく，徭役そのほか公課の基準となり，財政全体の基礎資料であった。土地台帳は統一新羅時代（→新羅）にすでに制作されており，高麗時代の初めには地力を基とした田畑の 3等級制がみられる。文宗23（1069）年に量田尺（60寸を 1尺，6尺を 1歩）と結（1結は 33歩四方）とを定めた。朝鮮王朝初期はこれによって量案をつくったが，世宗26（1444）年に田畑を 6等級に分け，結負は土地の肥沃度を考慮した面積となり，これを課税の基準とした。全国的な耕地測量は高麗末期恭譲王3（1391）年に始まり，朝鮮王朝では太宗5（1405）年から始まる。『経国大典』には 20年ごとに耕地測量と量案制作とを行ない，量案は中央の戸曹，地方の道庁と郡庁に各一部を保管するとあるが，実情は数十年ごとに一部の地方で行なわれたにすぎない。量案は若干の改正が行なわれながら，1938年まで続いた。現存最古の量案は朝鮮王朝顕宗10（1669）年前後の懐仁県（忠清北道報恩郡懐北面）量案で，その後も南部諸道に散見する程度であるが，社会経済史料としてきわめて貴重なものである。

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