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Developing a Land Use Database of the Kanto Region, Japan in the 1880's

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ns then OK good afternoon everybody
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of of the things in your right the on collections of findings are wholly copied into these conclusions on the companies continue trying to cast the sole means of the ability of the ball in the year and that are applicable to all those that that's the depend on the those applicable but then is to assure that history constitutional news for example in that is part of the 2 is relatively what it developed in it being a hundred years ago so the this remainder and that as a total to area you have to be given off and so that there was no that at all of the devices to get a good sense of destiny is only banished in all the graphs and changes the 1st the operands it is yeah so that would be spent on there being in the intervening years host cells not the only thing I in a in a whole other areas and that's the end of the the sequences of the MIT is similar to the properties and would this is this search this happened that the photos that was and he surpassed where no nobody but the area this sequence is it applicable for the about to kill but unlike in that the this happened and that's about 100 years ago that this happened in about 100 years and equipped with the to add in patent total but after that it after then for example 15 years ago Philomena happens in the province as he would like his wife you who we are and what you have to move on so that we can stick to us and we can you for rest
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Metadaten

Formale Metadaten

Titel Developing a Land Use Database of the Kanto Region, Japan in the 1880's
Serientitel FOSS4G Seoul 2015
Autor Iwasaki, Nobusuke
Lizenz CC-Namensnennung - keine kommerzielle Nutzung - Weitergabe unter gleichen Bedingungen 3.0 Deutschland:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen und nicht-kommerziellen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen und das Werk bzw. diesen Inhalt auch in veränderter Form nur unter den Bedingungen dieser Lizenz weitergeben.
DOI 10.5446/32012
Herausgeber FOSS4G
Erscheinungsjahr 2015
Sprache Englisch
Produzent FOSS4G KOREA
Produktionsjahr 2015
Produktionsort Seoul, South Korea

Inhaltliche Metadaten

Fachgebiet Informatik
Abstract Historical land use records are valuable information for biodiversity protection, disaster management, rural area planning and many other uses. The Rapid Survey Maps (RSM) that were surveyed in the 1880's (early Meiji Era), are the first modern cartographical map series of Japan and important sources of information on traditional land use in early modern Japan. We had been analyzing these maps based on polygon data and raster based Web-GIS System to disseminate the Rapid Survey Maps using FOSS4G, but, these are difficult to apply for quantitative analyses of land use change. Thus, we developed a grid based land use database using QGIS and PostGIS, and published the database using GitHub. First, we developed a land use data input system consisting of a client and server. The client was developed using QGIS API and the server was a PostGIS database. Point data as a 100 m grid was stored in the PostGIS server and land use category underneath each point was input using the QGIS application. About 1,400 thousand records (70%) have already been inputted. Error of grid based land use data is less than 1% compared with vector based land use data. We analyzed land use change from the 1880's to 1975's. The most significant difference between the 1880's and 1970's is the area of urban land use and rough land such as grassland and bush. Urban area increased remarkably and grassland area almost disappeared. That does not mean grassland changed to urban area. Most grassland changed to agricultural land uses and forest, and urban area was formerly mainly agricultural land use and forest. Some inputted data have been copied to GeoJSON and uploaded to GitHub (https://github.com/wata909/habs test/) as open data (Creative Commons BY 2.1 Japan). A tentative data browsing site was constructed with Leaflet (for example, http://wata909.github.io/habs test/rapid544000.html). In this site, it is possible to compare point type land use data in the 1880's and present topographic map/RSM raster data. We hope that this database contributes to not only academic research, but also business, government, and public interest.

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