1 Learning from land suitability analysis and Dutch spatial policy for sustainable land use in Japan Toru Nagayama 22 January 2009 GIS Research Group Seminar, University of Tsukuba Highlights from : Nagayama., T. (2008) Application of Geo-information to support sustainable land use in Japan, Individual Final Assignment Report submitted to International Institute for Geo- information Science and Earth Observation (ITC), Enschede, the Netherlands
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1
Learning from land suitability analysis and Dutch
spatial policy for sustainable land use in Japan
Toru Nagayama
22 January 2009
GIS Research Group Seminar, University of Tsukuba
Highlights from : Nagayama., T. (2008) Application of Geo-information to support sustainable land
use in Japan, Individual Final Assignment Report submitted to International Institute for Geo-
information Science and Earth Observation (ITC), Enschede, the Netherlands
2
Background
• Rapid urbanization in Japanese suburban
areas after the Second World War
– Inhabitation in disaster prone areas / sprawl
– Degradation of nature / reduce of farmland
• No sign of improvement
– Problems of land use policy
– Lack of (geo-)information and its sharing
• Opportunities for improving land use policy
– Review of land use policy
– Application of geo-information
3
Objectives
1. Summarize land use policy in Japan
2. Conduct a case study to support land
use planning
3. Review spatial planning in the
Netherlands
4. Identify possible ways to apply geo-
information in Japanese land use policy
4
Legal system• National Land Use Planning Act
– National land use plan (National, Prefectural, Municipal)
– Prefectural land use master plan
• Compile five land uses from the following laws
• Individual spatial planning laws
– Urban: City Planning Law
– Agriculture: Law Concerning the Improvement of
Agricultural Promotion Areas
– Forest: Forest Law
– Natural park areas: Natural Parks Law
– Nature reserve areas: Nature Conservation Law
1. Land use policy in Japan
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Schematic land use zoning
Urban planning area
Blank areas called
“White areas”
Urban
promotion
zone
Urban control zone
Agricultural promotion zone
Agricultural land zone
Forest areaNatural park area
Nature
Conservation
area
1. Land use policy in Japan
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Identified problems• Physical
– Inhabitation in disaster prone areas
– Nature degradation
– Loss of beautiful landscapes
– Inefficient energy and resource use by urban sprawl
• Institutional
– Weak coordination of relevant laws
– Uneven and inconsistent land use regulation
– No representation for secondary- (semi-) nature areas
No-rice cultivationNo rice cultivation mainly on terrace
areas. * * * * *
Rice field cultivation Rice cutlgation dominating areas * * * * * *
Intense cultivationGreen areas mainly for cultivation. No
grass lands are expected * * * * *
Urban No cultivation is recognzied. * * * *
Legend
No cultivation, no artificial No rice cultivation Rice cultivation Intense cultivation Urban
Legend
LCLUClassUnitPoly
<all other values>
UnitClass
1
2
3
4
5
11
Provision of Geo-information2. Case study
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Suitability criteria
• Three classification for each criterion
– Suitable / less suitable / unsuitable
• Equal weighting
• Simple overlaying method
2. Case study
Criterion Developed Agriculture Nature
Flatness * *Vulnerability to floods *Vulnerability to earthquakes *Land use compatibility * * *Distance from urban centers * * *Land use zoning *Valuable nature *Proximity to nature *