Yuji Masutomi Masutomi Yuji Assistant Fellow Assistant Fellow - PowerPoint PPT Presentation

Development and Application and Application of of Development Global Drainage Drainage Basin Database Basin Database Global （ GDBD ） （ GDBD ） th . AIM International Workshop 12 th . AIM International Workshop 12 th - st , 2007 February 19 th -21 21 st , 2007 February 19 National Institute for Environmental Studies, Japan National Institute for Environmental Studies, Japan Yuji Masutomi Masutomi Yuji Assistant Fellow Assistant Fellow National Institute for Environmental Studies National Institute for Environmental Studies

Motivation and Overview of GDBD Motivation and Overview of GDBD � In the 21st century, human well In the 21st century, human well- -being will be locally and globally being will be locally and globally � affected by various water- -related issues. related issues. affected by various water freshwater scarcity and pollution, floods, disturbance of bioge freshwater scarcity and pollution, floods, disturbance of biogeochemical ochemical � � cycles, conflicts in international river basins and so on… …. . cycles, conflicts in international river basins and so on � For understanding and addressing these issues, baseline data is For understanding and addressing these issues, baseline data is � prerequisite. prerequisite. � So we have developed So we have developed Global Drainage Basin Database (GDBD) Global Drainage Basin Database (GDBD). . � Consists of 6 GIS data Consists of 6 GIS data � � • Basin boundary data data • Basin boundary • Stream network data data • Stream network • Discharge station data data • Discharge station • • Natural lake data Natural lake data • • Dam lake data Dam lake data • Flow direction data data • Flow direction Gives us Gives us � � • hydrological flows of land surface • hydrological flows of land surface • appropriate spatial unit • appropriate spatial unit for analysis, assessment and management for analysis, assessment and management � � • Geographic, topographic, and social information • Geographic, topographic, and social information

GDBD_ID : Identification number Region 、 Sub-region 、 Basin 、 Downstream Cachment area 、 Mean elevation 、 Mean slope Country Population 、 Population Density Discharge Station Data Stream Network Data Basin Boundary Data Natural Lake data Dam lake data Land use/cover ● Each polygon represents elementary drainage basin ● Each polygon represents elementary drainage basin ● Each elementary drainage basin has a broad range of information ● Circumference 、 Area Each elementary drainage basin has a broad range of information

of GDBD ① ① Features of GDBD Features -Data format Data format- - - � ArcGIS Geodatabase ArcGIS Geodatabase format format � ArcGIS ＋ ＋ MS Access � ArcGIS MS Access � • Suitable for development of database based on GIS data • Suitable for development of database based on GIS data • We can browse and edit database We can browse and edit database • � Not only by ArcGIS but also by MS Access Not only by ArcGIS but also by MS Access � • Useful for those not familiar with GIS Useful for those not familiar with GIS •

of GDBD ② ② Features of GDBD Features -Data r Data resolution esolution- - - ≒ 1km) resolution data (30 seconds ≒ � High High- -resolution data (30 seconds 1km) � Comparison between 30 min and 30 sec basin boundary Comparison between 30 min and 30 sec basin boundary

Application of GDBD Application of GDBD -Development of Development of Water Supply/Demand Calculation Model Water Supply/Demand Calculation Model- - - Climate Data Climate Data Population Data Population Data AQUASTAT AQUASTAT （ GSWP2 ： Temperature 、 Precipitation ） （ GSWP2 ： Temperature 、 Precipitation ） Crop Water Requirement Data Crop Water Requirement Data Shiklomanov Shiklomanov Runoff Runoff Water Demand Water Demand Runoff Runoff Water Demand Water Demand Calculation Module Calculation Module Calculation Module Calculation Module Calculation Module Calculation Module Calculation Module Calculation Module Runoff Runoff Water Consumption Water Consumption River Discharge River Discharge River Discharge River Discharge River Discharge River Discharge Calculation Module Calculation Module Calculation Module Calculation Module Basin boundary Basin boundary Stream Network Stream Network Natural Lake Natural Lake Dam Lake Dam Lake Discharge Station Discharge Station GDBD GDBD

Result - -Global Global- - Result Annual river discharge [m 3 /s] Abundant in hi hi- -latitude latitude and and equatorial equatorial region region � Abundant in � Scarce in mid mid- -latitude latitude region region � � Scarce in There is spatial variability of water resource

Result - -Regional Regional- - Result Annual river discharge [m 3 /s] （ Indochina Peninsula ） � We can see spatial variability of water resource We can see spatial variability of water resource at small scale at small scale by by � using high high- -resolution basin boundary data of GDBD resolution basin boundary data of GDBD using

Summary and future plans Summary and future plans � We have developed Global Drainage Basin Database We have developed Global Drainage Basin Database � (GDBD) (GDBD) � Basin boundary, Stream network, River discharge station, Basin boundary, Stream network, River discharge station, � Natural lake, Dam lake, Flow direction Natural lake, Dam lake, Flow direction a broad range of information a broad range of information � � � We have developed water supply/demand calculation We have developed water supply/demand calculation � model based on GDBD. model based on GDBD. � We can see spatial variability of water resource by this model We can see spatial variability of water resource by this model � � We will apply GDBD and the model based on GDBD to We will apply GDBD and the model based on GDBD to � not only global but also regional water- -related problem. related problem. not only global but also regional water

世界流域データベース 世界流域データベース Global Drainage Basin Database （ GDBD ） Global Drainage Basin Database （ GDBD ） Available soon from from Available soon http://www- -cger.nies.go.jp/cger cger.nies.go.jp/cger- -j/db/dbhome.html j/db/dbhome.html http://www

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