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Global Vegetation Map º¸°í¼­

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2018.10.29
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 Global Vegetation Map º¸°í¼­ #1    Global Vegetation Map º¸°í¼­ #2    Global Vegetation Map º¸°í¼­ #3
 Global Vegetation Map º¸°í¼­ #4    Global Vegetation Map º¸°í¼­ #5    Global Vegetation Map º¸°í¼­ #6
 Global Vegetation Map º¸°í¼­ #7    Global Vegetation Map º¸°í¼­ #8    Global Vegetation Map º¸°í¼­ #9
 Global Vegetation Map º¸°í¼­ #10    Global Vegetation Map º¸°í¼­ #11    Global Vegetation Map º¸°í¼­ #12
 Global Vegetation Map º¸°í¼­ #13    Global Vegetation Map º¸°í¼­ #14    Global Vegetation Map º¸°í¼­ #15

1Àå 3Global Vegetation Map

2Àå NDVI-½Ä»ýÁö¼ö

3Àå ±× ¹ÛÀÇ ½Ä»ýÁö¼ö¸¦ ³ªÅ¸³»´Â Index

4Àå Âü°íÀÚ·áÃâó

  global vegetation map     
12.3global vegetation map
Áö±¸ ÀüüÀÇ ½Ä»ý»óŸ¦ °´°üÀûÀ¸·Î ÆľÇÇϱâ À§Çؼ­´Â ÀΰøÀ§¼º noaa¿¡ žÀçµÇ¾î ÀÖ´Â avhrrÀÌ À¯È¿ÇÏ´Ù.
avhrrÀÇ Ã¼³Î 1(°¡½Ã:ch1), ü³Î(±ÙÀû¿Ü:ch2)·ÎºÎÅÍ ´ÙÀ½ ½ÄÀ¸·Î »êÃâµÈ ndvi(normalized difference vegetation index)¶ó°íµµ ÇÑ´Ù.
ndvi ch2-ch1/ch2ch1  
avhrrÀÇ ifov´Â À§¼ºÁ÷ÇÏ¿¡¼­ ¾à 1.1kmÀÌ°í, Áö±¸ Àü¿ªÀ» °ÅÀÇ ÇÏ·ç¿¡ 2ȸ °üÃø ÇÒ ¼ö ÀÖ´Ù.¹Ì±¹ÀÇ noaa(±¹¸³Çؾç´ë±âû)´Â ÁÖÀϸ¶´Ù Áö±¸Àü¿ªÀÇ ndvi ¹× avhrrü³Î ÀÚ·áµîÀ» Á¤¸®ÇÑ gvi(global vegetation index)¶ó°í ÇÏ´Â ÆÄÀÏÀ» ÀÛ¼ºÇÏ¿© ¹èÆ÷ÇÏ°í ÀÖ´Ù.
  
noaa-¹Ì±¹Çؾç´ë±â°ü¸®Ã³(national oceanic and atmospheric administration )
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ÁÖ¿ä È°µ¿-Çؾç¤ý±â»ó¤ý¼ö»ê ¾÷¹«, ȯ°æ À§¼º ÀÚ·á °ü¸®, ÇØ¾ç ´ë±â ¿¬±¸
  
½Ä»ýÀÇ °èÀý º¯È­ ÆÐÅÏÀÌ À¯»çÇÑ È­¼Ò¸¦ ±×·ìÀ¸·Î Á¤¸®ÇÏ¸é ¼¼°è½Ä»ýµµ°¡ ¾ò¾îÁø´Ù.󸮷μ­´Â 1³â 12°³¿ùºÐÀÇ ndviÀÚ·á¿¡ ´ëÇÑ Å¬·¯½ºÅÍÀÏÀ» ÇàÇÑ´Ù.
¡ØŬ·¯½ºÅ͸µ: °³Ã¼ °£ÀÇ À¯»çµµ¸¦ °Å¸®·Î Æò°¡ÇÏ°í, °Å¸®°¡ °¡±î¿î °ÍÀ¸·ÎºÎÅÍ µ¿ÀÏ Å¬·¯½ºÅÍ·Î ¹­¾î °¡´Â ¹æ¹ýÀÌ´Ù.Ŭ·¯½ºÅÍÀÇ ¼ö°¡ ¼³Á¤µÈ ÃÖÁ¾ Ŭ·¯½ºÅÍ ¼ö·Î µÉ ¶§±îÁö °³Ã¼°£ÀÇ À¯»çµµ Æò°¡¿Í °áÇÕÀÌ ¹Ýº¹µÇ¾î ÷ÀڷΠŬ·¯½ºÅÍ°¡ Á¤¸®µÇ¾î °£´Ù.
  ndvi-½Ä»ýÁö¼ö  
ndvi (normalized difference vegetation index)´Â ½Ä»ýÀÇ È°·Âµµ¸¦ Æò°¡ÇÏ´Â °¡Àå º¸ÆíÀûÀÎ ÁöÇ¥·Î¼­ ½Ä»ýÀÇ °Ç°­ »óÅ ¹× ³óÀÛ¹° »ý»ê·® ÃßÁ¤µî¿¡ È¿°úÀûÀÎ ½Ä»ýÁö¼ö·Î 20³â ÀÌ»ó ÃàÀûµÈ noaa ndvi dataÀÇ °æ¿ì ½Ä»ýÀÇ ½Ã±âÀû, °èÀýÀû º¯È­ ŽÁö°¡ °¡´ÉÇϸç À̸¦ °³¹ßÇÏ¿© °¡¹³Áö¼ö È®Àεµ °¡´ÉÇÏ´Ù.
½Ä¹°ÀÇ ÃÑ»ý»êü·®(bio mass)À̳ª ³ìÁöÁö¼ö(greenness)¸¦ »ó´ëÀûÀ¸·Î Á¤·®È­°¡ °¡´ÉÇÏ´Ù.
  ndvi-½Ä»ýÁö¼ö  
ndvi nirtm4-redtm3/nirtm4redtm3 (-1<ndvi<1)
nirÀº ±ÙÀû¿Ü ¹êµå(0.xxxx.xx.xx§­)·Î ¿µ»ó ³»¿¡ ³ªÅ¸³ª´Â ½Ä»ýÀÇ »ý¹°·®¿¡ ¸Å¿ì ¹Î°¨ÇÑ ¹ÝÀÀÀ» º¸À̸ç red´Â °¡½Ã¿µ¿ªÀÇ 3¹ø ¹êµå (0.xxxx.xx.xx)·Î È°¼ºµµ°¡ Å« ½Ä»ýÀ» ±¸º°Çϴµ¥ ÀÖ¾î °¡Àå Áß¿äÇÑ ¹êµåÀÌ´Ù.ÀÌ¿Í °°Àº °¡½Ã¿µ¿ª¿¡¼­ÀÇ °­ÇÑ ¹Ý»ç¸¦ °®´Â Ư¼ö¼º¿¡ ÀÇÇØ °¡½Ã ¹× ±ÙÀû¿Ü ¿µ¿ªÀÇ ÆÄÀå´ë°¡ ½Ä»ýÁ¶»ç¿¡ ÀÌ¿ëµÇ°í ÀÖ´Ù.
  ndvi-½Ä»ýÁö¼ö  
ndvi´Â ½Ä»ýÀÌ ¹ÐÁ¢ÇÑ Áö¿ªÀϼö·Ï 1¿¡ °¡±õ°Ô ºÐÆ÷µÇ°í, ±×¿¡ ¹ÝÇØ ¹°, ±¸¸§, ´«¿¡ ´ëÇؼ­´Â ±ÙÀû¿Ü¿µ¿ª¿¡ ºñÇØ °¡½Ã±¤¼±¿µ¿ªÀÇ ÆÄÀåÀÌ °­ÇÏ°Ô ¹Ý»çµÇ¾î, ndvi´Â À½ÀÇ °ªÀ» °®°Ô µÈ´Ù.¶ÇÇÑ ¾Ï¹ÝÀ̳ª ³ªÁö¿¡ ´ëÇؼ­´Â ¾çÀÇ °ªÀÇ ¹Ý»çÀ²ÀÌ °ÅÀÇ °°¾ÆÁö°Ô µÇ¾î ±× °á°ú ndvi´Â 0¿¡ °¡±î¿î °ªÀ» °®´Â´Ù.½Ä»ýÀÌ Á¸ÀçÇÏ´Â ´ëºÎºÐÀÇ ¿µ¿ªÀº ½Ä»ýÀÌ °®´Â ¼öºÐ »óŸ¦ °í·ÁÇÏÁö ¾Ê´Â´Ù¸é º¸Åë 0.1~0.6»çÀÌÀÇ °ªÀ» °®´Â °ÍÀÌ ÀϹÝÀûÀÌ´Ù.
  ±× ¹ÛÀÇ ½Ä»ýÁö¼ö¸¦ ³ªÅ¸³»´Â index  ratio vegetation index(rvi)  soil-adjusted vegetation index(savi)  transformed vegetation index(tvi)  perpendicular vegetation index(pvi)  tasseled cap transform    1987³âÀÇ ¼¼°è ½Ä»ýµµ    
1999³â 3¿ùºÎÅÍ 20ÀÏ °£°ÝÀ¸·Î Çѹݵµ °üÃø ¿µ»óµé¿¡ ´ëÇؼ­ Á¤ÀûÇÕ¼º(¿ÞÂÊ)°ú µ¿ÀûÇÕ¼º(¿À¸¥ÂÊ)µÈ ndvi ¿µ»ó
  Á¤±ÔÈ­ ½Ä»ýÁö¼ö, ÀϺ»ÀÇ ½Ä»ýÈ°·Âµµ ºÐ¼®¿µ»ó     rgb¿µ»ó    ndvi°á°ú¿µ»ó    Âü°íÀÚ·áÃâó            xxxx.xx.xx   text books on remote sensing and gis   °ø°ø¿ø°ÝŽ»ç¼¾ÅÍ  
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