Landscape reconstruction of Jorisystem area using Historical GIS

日本古代有许多平原和盆地，乔里普兰就是在那里建立的。Joriplan将稻田调整为每边长约109米的网格模式，并引入了一种统一的系统，通过以CHO面积单位为基础的编号方法来指示位置。在重建古代和中世纪的景观时，土地制度，即约里斯制，是非常重要的。由于根据Jorissystem，每一条线都有单独的编号，因此可以将其虚拟地表示为具有地理位置的栅格数据，从而便于应用于地理信息系统分析。因此，我首先用Jorissystem建立了历史地理信息系统数据库，该数据库包含了北国地区古代和中世纪的土地用途、土地所有者、聚落考古遗存。利用这个数据库，我试图展示寺庙开展的庄园稻田的土地利用和交换地块的真实情况。作为研究的结果，发现了一些关于僧侣和祭祀制度的有趣事实：766年，由于东代寺集中了分散在Echizen-no-kuni(省)一处的田地，寺庙的田地被换成了几公里外的Sakai-un(县)的kubundens(祭祀制度下分配给每人的公共稻田)。在Asuwa-Gun，它在没有考虑土地物理条件的情况下，为附近的kubundens更换了田地。

There are many plains and basins where the Joriplan was established in ancient times in Japan. Paddy fields was adjusted by the Joriplan into the grid pattern of approximately 109meters in length on each side and introduced a uniform system that indicated locations by a numbering method which was based on the areal unit of cho. The land system, the Jorisystem, is very important when reconstructing the landscape of ancient and medieval times. Since each chohas individual number according to the Jorisystem, it can be virtually expressed as grid data with geographical location and easily applied to GIS analysis. So I built up the historical GIS database with Jorisystem first, which contained land use, land holders, the archeological remains of settlements in Hokuriku region in ancient and medieval times. Using the database I tried to show the true state of land use and exchange plots of manorial paddy fields which were carried out by the Temple. As a result of the research, some interesting facts on the land use of monors and the Jorisystem were found as follows: As Todai - jiTemple concentrated fields which were dispersed in one place in Echizen-no-kuni(province) in 766, fields of the Temple were exchanged for kubundens(public paddy fields assigned to each person in the Ritsuryosystem) in several kilometers away in Sakai-gun(county). In Asuwa-gun, it changed fields for kubundensof the neighborhood without consideration on land physical conditions.