Application of satellite imagery

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Presented in “China – Thailand Geo-Informatics Workshop Series I: Agricultural Applications” 30 June - 2 July 2010 at Pattaya, Thailand

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Application of satellite imagery

  1. 1. Application of Satellite Imagery on Forest Cover Monitoring in Thailand by Mr. suchin Khantisomboon Department of Nation parks wildlife and Plant conservation THAILAND [email_address]
  2. 2. Outline <ul><li>Objective </li></ul><ul><li>Historical Background </li></ul><ul><li>Methology </li></ul><ul><li>Output </li></ul><ul><li>Cause and Effect </li></ul><ul><li>Conclusion </li></ul>
  3. 3. Objective <ul><li>To assess the existing forest areas in each periods by using satellite imagery </li></ul><ul><li>To study and monitor forest cover areas in Thailand </li></ul><ul><li>To analyze the cause and effect of forest cover changes </li></ul>
  4. 4. Historical background <ul><li>Department of national park wildlife and plant conservation ( former the Royal Forest Department ) start to use Land satellite-LANDSAT of Nation Aerospace Administrative –NASA since 1973 </li></ul><ul><li>The Application of Satellite data to assess the existing forest cover of Thailand by visual interpretationin19731976,1978,1982,1985,1988,1991,1993,1995,1998,2000 and 2004 </li></ul>
  5. 5. Historical background <ul><li>Satellite Data : LANDSAT 1,2,3,4,5,7 </li></ul><ul><li>Classification: Visual Interpretation </li></ul><ul><li>Map Scale : 1 : 250000 /1 : 50000 </li></ul><ul><li>Data source : Hard Copy </li></ul><ul><li>Out source : Hard Copy </li></ul><ul><li>Time Peroids : 2 – 4 years </li></ul>
  6. 6. Historical background <ul><li>The Result : The result of the existing forest area of Thailand by using LANDSAT interpretation in Thailand. There are the existing forest areas as follow; </li></ul><ul><li>-----------Based map on scale 1 : 250,000----------- </li></ul><ul><li>In 1973 the existing forest areas are 221,725 square kilometers or 43.21 % of the country </li></ul><ul><li>In 1976 the existing forest areas are 198,417 square kilometers or 38.67 % of the country </li></ul><ul><li>In 1978 the existing forest areas are 175,224 square kilometers or 34.15 % of the country </li></ul><ul><li>In 1982 the existing forest areas are 156,600 square kilometers or 30.52 % of the country </li></ul><ul><li>In 1985 the existing forest areas are 150,866 square kilometers or 29.40 % of the country </li></ul><ul><li>In 1988 the existing forest areas are 143,803 square kilometers or 28.03 % of the country </li></ul><ul><li>In 1989 the existing forest areas are 143,417 square kilometers or 27.95 % of the country </li></ul><ul><li>In 1991 the existing forest areas are 136,698 square kilometers or 26.64 % of the country </li></ul><ul><li>In 1993 the existing forest areas are 135,554 square kilometers or 26.03 % of the country </li></ul><ul><li>In 1995 the existing forest areas are 131,485 square kilometers or 25.62 % of the country </li></ul><ul><li>In 1998 the existing forest areas are 129,722 square kilometers or 25.28 % of the country </li></ul><ul><li>-----------Based map on scale 1 : 50,000----------- </li></ul><ul><li>In 2000 the existing forest areas are 172,050 square kilometers or 33.40 % of the country </li></ul><ul><li>In 2004 the existing forest areas are 167,692 square kilometers or 32.67 % of the country </li></ul>
  7. 7. Forest cover in 1973 221,725 sq.km. 43.21%
  8. 8. Forest cover in 1976 198,417 sq.km. 38.67%
  9. 9. Forest cover change during 1973-1976
  10. 10. Forest cover in 1978 175,224 sq.km. 34.15%
  11. 11. Forest cover change during 1976-1978
  12. 12. Forest cover in 1982 156,600 sq.km. 30.52%
  13. 13. Forest cover change during 1978-1982
  14. 14. Forest cover in 1985 150,866 sq.km. 29.40%
  15. 15. Forest cover change during 1982-1985
  16. 16. Forest cover in 1988 143,803 sq.km. 28.03%
  17. 17. Forest cover change during 1985-1988
  18. 18. Forest cover in 1991 136,698 sq.km. 26.64%
  19. 19. Forest cover change during 1988-1991
  20. 20. Forest cover in 1993 135,554 sq.km. 26.03%
  21. 21. Forest cover change during 1991-1993
  22. 22. Forest cover in 1995 131,485 sq.km. 25.62%
  23. 23. Forest cover change during 1993-1995
  24. 24. Forest cover in 1998 129,722 sq.km. 25.28%
  25. 25. Forest cover change during 1973-1998
  26. 26. Flow Chart of Work ( 1 ) Methology
  27. 27. Flow Chart of Work (2)
  28. 28. Flow Chart of Work (3)
  29. 29. Index of SPOT imagery(260 scenes)
  30. 30. Classification categories <ul><li>Upland forest </li></ul><ul><li>Mangrove forest </li></ul><ul><li>Shrimp farm </li></ul><ul><li>Water Body </li></ul><ul><li>Other land </li></ul>
  31. 31. Upland Forest
  32. 32. Mangrove Forest
  33. 33. Water Body
  34. 34. Shrimp Farm
  35. 35. Other Land
  36. 36. Field survey <ul><li>Topographic map </li></ul><ul><li>Satellite imagery </li></ul><ul><li>Ground photograph </li></ul><ul><li>Crown cover and plant profile </li></ul>
  37. 47. Profile of Dry Dipterocarp Forest Percent of Crown Cover = 52.21 %
  38. 48. Profile of Mixed Deciduous Forest Percent of Crown Cover = 81.10 %
  39. 49. Profile of Dry Evergreen Forest Percent of Crown Cover = 87.41 %
  40. 50. Profile of Swamp Forest Percent of Crown Cover = 80.04 %
  41. 51. Output <ul><li>Forest Cover Map 2008 </li></ul><ul><li>Forest Cover Change 2006 – 2008 </li></ul><ul><li>Forest Cover in Conservation Area </li></ul>
  42. 52. Forest Cover of Thailand Upland Forest
  43. 53. Forest Cover of Thailand Upland Forest Mangrove Forest
  44. 54. Forest Cover of Thailand Upland Forest Mangrove Forest Shrimp Farm
  45. 55. Forest Cover of Thailand Upland Forest Mangrove Forest Shrimp Farm Water Body
  46. 56. Forest Cover of Thailand Upland Forest Mangrove Forest Shrimp Farm Water Body Other Land
  47. 57. Forest Cover of Thailand Forest Cover Map 2008
  48. 58. Forest Cover of Thailand Forest cover change 2006-2008
  49. 59. Forest Cover of Thailand Conservation Area
  50. 60. Cause of Forest Changes <ul><li>Land Demand for Agriculture ( main problem ) </li></ul><ul><li>Land Demand for Resouvoir </li></ul><ul><li>Land Demand for Residential Areas </li></ul><ul><li>Land Demand for Commercial areas </li></ul><ul><li>Land Demand for Recreation Areas </li></ul><ul><li>Forest Fire </li></ul>
  51. 61. Effect of Forest Changes <ul><li>Global Warming and Climate Changes </li></ul><ul><li> * Long-term Working Group </li></ul><ul><li> * Kyoto-Potocal Working Group </li></ul><ul><li>Water Supply decreasing </li></ul><ul><li> * Drought </li></ul><ul><li>Natural disaster </li></ul><ul><li> * Flood and Landslide </li></ul>
  52. 62. Sampling Area of Flood and landslide Uttaradit Province
  53. 63. 6 Watershed area in Uttaradit province 1 2 3 4 5 6
  54. 64. Forest cover changes in Watershed 1 Acquired in 2006 Acquired in 2008 Forest cover change= 7.42 Km 2 (7.07 % )
  55. 65. Forest cover changes in Watershed 2 Acquied in 2006 Acquired in 2008 Forest cover change = 1.66 Km 2 (2.30 % )
  56. 66. Forest cover changes in Watershed 3 Acquired in 2006 Acquired in 2008 Forest cover changes= 2.20 Km 2 (1.50 % )
  57. 67. Forest cover changes in Watershed 4 Acquired in 2006 Acquired in 2008 Forest cover changes= 11.34 Km 2 (5.58 % )
  58. 68. Forest cover changes in Watershed 5 Acquired in 2006 Acquired in 2008 Forest cover changes= 1.45 กม 2 (2.79 % )
  59. 69. Forest cover changes in Watershed 6 Acquired in 2006 Acquired in 2008 Forest cover changes= 0.76 Km 2 (0.73 % )
  60. 70. The result of Forest cover monitoring Remark : Watershed 1 and 4 have been landslide and flood in 23 May 2006
  61. 71. GIS Analysis Slope Classes Forest cover changes with Slope classes Cause to landslide and flood in this area
  62. 72. Compare of forest cover change in 6 watershed 7.07 % (7.42 Km 2 ) 5.58 % (11.34 Km 2 ) 2.79 % (1.45 Km 2 ) 2.30 % (1.66 Km 2 ) 1.50 % (2.20 Km 2 ) 0.73 % (0.76 Km 2 )
  63. 73. <ul><li>Field survey at the second time of flood and landslide in this area occur in May,18, 2009 after it heavy rain at the night time of May,17, 2009 to the morning of May,18, 2009 </li></ul>
  64. 74. Timber Logging
  65. 82. Early warning system <ul><li>Distinguish into 4 land cover categories </li></ul><ul><li>Forest cover changes </li></ul><ul><li>Slope map </li></ul><ul><li>Drainage pattern </li></ul><ul><li>Village position </li></ul><ul><li>Drainage buffer zone </li></ul>
  66. 83. Natural Forest
  67. 84. Reforestation Area
  68. 85. Forest area with Orchard It happened landslide only in orchard area
  69. 86. Forest area with Field Crop
  70. 87. 1 2 3 1 หมู่บ้านเสี่ยงภัยระดับวิกฤต 2 หมู่บ้านเสี่ยงภัยระดับเตรียมการ 3 หมู่บ้านเสี่ยงภัยระดับเฝ้าระวัง Early warning system
  71. 90. Conclusion <ul><li>Satellite data is very useful for forest cover monitoring and land use classification in Thailand </li></ul><ul><li>Geographic Information System is suitable for database and data analysis </li></ul><ul><li>Global Positioning system is convenience for navigation and survey </li></ul>
  72. 91. Thank you for your attention

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