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LDD'S Application programs for sharing GIT among less skilled endusers

Parida Kuneepong and Rangsridh Boonsin
Land Development Department, Ministry of Agriculture and Cooperatives
Bangkok 10900, Thailand.
Email: Parida@loxinfo.co.th



Abstract
Land Development Department (LDD) had developed application programs in response to the need of LDD's regional offices to build and share GIS applications among poorly skilled end users.

Originally, the project was developed in collaboration with Chiang Mai University mostly under ArcView environment to be handed out to LDD's regional offices and later on to the bodies that work in the territory, such as provincial administration and individual farmers. All the functions of the complex application in the programs were brought into ArcView with an easy to use interface.

LDD has until now developed 5 personalization with 4 of them are in ArcView environment, namely:
  1. SoilView: Running Soil map of Thailand (76 provinces) in Microsoft Windows in Thai language.
  2. LandPlan : Running and analyzing changing in Land use/ land cover data with ArcView 3.0 or higher in Microsoft Windows and Graphic User Interface (GUI) in Thai language.
  3. EROSView : Running and analyzing soil erosion and factors inducing erosion through Thai menu bars under ArcView 3.1.
  4. AgZone : A decision support program for crop zoning to be used in ArcView 3.1. It included physical and economic zoning.
  5. ThaiPedon : Running soil series in Thailand included their properties and pictures of typical profiles.
The application programs make it easy to share of applications among different bodies, share both cartographic and noncartographic data, be trained and offered technical support by LDD.

Land Development Department
The main tasks of the Land Development Department (LDD) are (i) survey of soil and land, (ii) research on soil and land development (including soil and water conservation) and (iii) land use planning for the economic development and/or conservation of land resources. In the 8 th National Development Plan (1997-2001), the development of a soil and land data base has been included as an additional task for LDD. This information system will serve LDD’s internal needs for information on land resource data for soil and water conservation and land use planning as well as cater for information on land resources required by government and private institutions. To support the development of the information system LDD has established a Center of Information Technology to coordinate digital activities such as the design of soils and land databases and an implementation plan.

LDD's Application Programs
The application programs has been developed by LDD's Center of Information Technology in collaboration with Chiang Mai University to meet the needs of its 12 regional offices,70 stations of LDD as well as individual and institutions concern to build and share GIS applications among poorly skilled end users. The systems were distributed in CD-ROM.

SoilView is the first ready made GIS application program in Microsoft Windows. It was developed in Avenue language from soil information and their suitability for economic crops all over Thailand to be presented both in map (scale 1: 50,000) and table formats. All the functions of the complex application in the programs were brought into ArcView with an easy to use Thai interface. Users can choose the menues according to their purposes in term of administrative units, map sheets, layer of information and project boundaries.

LandPlan is a GIS application program under ArcView environment in Thai Graphic User Interface Windows. LandPlan was developed to support national resource development planning. It can be possible to retrieve and analyse land use, land cover , suitability and limitation of lands for specific crops. The presentation could also be in maps (scale 1: 50,000) and/or tables.




AgZone is the application program for agro-ecological zoning follow FAO land evaluation (FAO, 1976). Parameters used in the program are soils, land use/land cover, land units, forest areas, irrigation areas, moisture availability, LUT and distance from factory in specific crops. The highly suitable zone (Z-I) is from highly suitable to moderately suitable soils within irrigated areas, exclude forests, urban areas and < 1 km from roads.




EROSView is an application program to retrieve lands that are prone to erosion under ArcView environment in Thai Graphic User Interface Windows. Spatial parts compose of soil, land use/ land cover, density of rain fall and erosion hazard while soil properties, land use and names are attributes. It can be retrieving and analyzing soil erosion and factors inducing erosion through Thai menu bars in terms of administrative units, main watersheds and project areas.



ThaiPedon was developed by visualBasic6.0 with Map Object 30 for retrieving soil typical profiles (USDA, 1999) from the soil maps. Their descriptions included taxonomy, properties and pictures of the profiles. The system combines soil map of scale 1:50,000 in shape files and their attributes that were linked with their pictures by Microsoft JetOLEDB 4.0. There are main menues: areas, administrative units, soil information and their suitability in specific purposes.

Training and Technical support Training and Technical support will be provided by LDD and/or Chiang Mai University both in LDD head office (Bangkok) and Its regional offices as well as individual and institutions concern by request to make the application possible for poorly skilled end users.

References
  • FAO, 1976. A framework for land evaluation. Soils Bulletin 32, FAO, Rome, 79 p.
  • USDA, 1999. Soil Taxonomy, A basic system of soil classfication for making and interpreting soil survey, USDA Agricultural handbook no.436
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