Utilization of GIS in Japan

Hiroyuki KITADA , Yumi SEKINENational Statistics Center

Japan

ContentOutline and Advantage of GIS

Utilization of Census data in GIS

Services by the “e-stat”

Grid square statistics

Densely Inhabited District

Challenge

Conclusion

Outline of GISGIS(Geographic Information System) enables an advanced analysis by managing and processing data that are linked to location(s) and displaying visually.

Land Information

Building Information

Road Information

Administration field and statistical Information

Original map where layer was overlapped

Advantage of GIS The display control in the map can be freely done. (expansion, reduction of the map, and movement of the display

position) Measurement of distance and area can be easily calculated. (measurement of distance between arbitrary points, area

measurement in arbitrary area) Data with the address can be automatically displayed in the map. The information extraction can be done easily by using the map. (classification display, map expression that corresponds to the

condition of designation) Effective expression can be freely done according to the

purpose. (It is possible to express it in the classification chart, the ranking map (choropleth map), and the graph chart and the distribution map) Three dimensional analyses can be done. (Bird's-eye view and the cross section, etc. can be made.)

Example of Using GIS DataCompilation of small area statistics

Compilation of Grid-Square(Mesh Blocks) Statistics

Demarcation of DID(Densely Inhabited　District)

GIS data is used in various fields such as universities and research laboratories including the local public entity that promotes the regional administration.

Population density by administrative boundary “prefectures”

Population per square kilometer

Relation between GIS and Census dataGIS is used to decide “basic unit district” of

Population Census.GIS is formed with the census data which is

based on “basic unit district”.GIS is used to analyze small area statistics.

Statistical map can be made by using the data of Population Census.Data of the Census can be used in

2005,2000,1995 now. Statistical map that links Population Census

with Establishment and Enterprise Census can be made.

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e-Stat (Portal Site of Official Statistics)

e-StatThematic Map

The statistical data shown in mapVarious statistical informations are displayed

on the map, and the graphical representation and the total of statistical data can be shown.

Data downloadVarious data can be downloaded.

Information on consolidation of towns and villagesConsolidation information between different

time points can be shown on the map.

The statistical data shown in map (example 1)Population total ranking map and statistic label display around Chiyoda Ward, Tokyo

The statistical data shown in map (example 2)Pie chart of population ratio of men to women around Chiyoda Ward, Tokyo

The statistical data shown in map (example 3)A border map of Narita city(Chiba pref.), and it’s consolidation information

Statistical map published with e-stat (example 1)Workers and Students Commuting to Ku-area of Tokyo-metropolitan

Statistical map published with e-stat (example 2)

Administrative boundaries have varied sometimes == time series comparison becomes difficult Administrative boundaries are not suitable for small area analysis

The Statistics Bureau has reorganized the result of the Population Census and the Establishment and Enterprise Census into small regional square of approximately 1km2 and 0.25km2, dividing the whole area of Japan by latitude and longitude.

Grid Square Statistics

Grid-Square(Mesh Blocks)

Advantage of Grid-SquareQuantitative comparisons between mesh

blocks are easy.Time series comparisons of the region are

easy. The data of a particular region can be

easily acquired. Analysis, calculation and comparison

related to the distance are easy.

Time Series Comparison

Population of the aged 65 years and over

and overMarginal Villages

Densely Inhabited District Promotion law for consolidation of towns and villages was

enforced in1953.

City Areas became larger than before and urban features of the word “city” changed.Year Number of

MunicipalitiesNumber of Towns

Number of villages

Total

1953 286 1,966 7,616 9,868

1956 498 1,903 1,574 3,975

2010 779 844 197 1,727

Densely Inhabited District A DID was established as one of regional presentations

for Population Census 1960.

A DID consists of adjoining basic unit districts that have high population density of 4,000person/Km2 and overall population adds up to 5,000 residents or more.

A DID is used as one of calculation criteria for the amount of Local Allocation Tax which is annually grated from the national government to the local government.

A DID is also used as a basis for planning policy such as town planning, redevelopment of urban areas, or disaster prevention measures.

Population density by administrative boundary “municipalities”

Population per square kilometer

Densely Inhabited　 District

ChallengesConsideration of setting standards of metropolis areas

Adaptation to system change (change of operating system etc.)

ConclusionThe Census data takes an important role in

GIS.GIS is used to decide the basic unit district of

the Census.Utilization on web

Web-GIS Statistical maps can be made on web.

Statistical maps that Statistics Bureau published can be browsed on web.

Challenge of GIS in the futureConsideration of setting standards of the

metropolis areas

Thank you for your attention!