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Çѱ¹¼öÀÚ¿øÇÐȸ / v.43, no.7, 2010³â, pp.597-608
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CART±â¹ý°ú º¸Á¶ÀڷḦ ÀÌ¿ëÇÑ Åä¾ç¼öºÐ ÃßÁ¤
( Soil Moisture Estimation Using CART Algorithm and Ancillary Data ) |
| ±è±¤¼·;¹ÚÇѱÕ; °æºÏ´ëÇб³ °ø°ú´ëÇÐ °ÇÃàÅä¸ñ°øÇкΠÅä¸ñ°øÇÐ;°æºÏ´ëÇб³ °ø°ú´ëÇÐ °ÇÃàÅä¸ñ°øÇкΠÅä¸ñ°øÇÐ;
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| º» ¿¬±¸¿¡¼´Â ¿ì¸®³ª¶ó Àü¿ª¿¡ ´ëÇÑ Åä¾ç¼öºÐ ºÐÆ÷µµ ÀÛ¼ºÀ» À§ÇÏ¿© Áö»ó°üÃø Åä¾ç¼öºÐ, °¼ö·®, Áö¸é¿Âµµ, NDVI, ÅäÁöÇǺ¹, À¯È¿Åä½É µî°ú °°Àº º¸Á¶ÀÚ·á¿Í CART±â¹ýÀ» ÀÌ¿ëÇÑ »õ·Î¿î ÃßÁ¤±â¹ýÀ» Á¦½ÃÇÏ¿´´Ù. ¸ÕÀú ½Å·Ú¼º ³ôÀº Åä¾ç ¼öºÐ °üÃøÀڷḦ °¡Áø ¿ë´ã´ï À¯¿ª(4°³ ÁöÁ¡)¿¡ ´ëÇÏ¿© Åä¾ç¼öºÐÀ» ÃßÁ¤ÇÏ¿© Àû¿ë °¡´É¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. 3°³ ÁöÁ¡(ºÎ±Í, »óÀü, õõ2)ÀÇ Åä¾ç¼öºÐ °üÃøÄ¡´Â Åä¾ç¼öºÐ ÃßÁ¤ ¸ðÇü ¼ö¸³¿¡ »ç¿ëÇÏ¿´À¸¸ç, °ËÁõ¿¡ 1°³ ÁöÁ¡(°èºÏ2)ÀÌ »ç¿ëµÇ¾ú´Ù. °üÃøÁöÁ¡µéÀÇ Åä¾ç¼öºÐÀÇ °üÃøÄ¡¿Í ÃßÁ¤Ä¡ »çÀÌÀÇ »ó°ü°è¼ö°¡ ¾à 0.737·Î ³ªÅ¸³µÀ¸¸ç, ÀüüÀûÀÎ Åä¾ç¼öºÐÀÇ °Åµ¿À» Àß ³ªÅ¸³»°í ÀÖ¾î Åä¾ç¼öºÐ ÃßÁ¤ ¸ðÇüÀÇ Àû¿ë°¡´É¼ºÀ» È®ÀÎÇÏ¿´´Ù. À̸¦ ÀÌ¿ëÇÏ¿© ¿ë´ã´ï À¯¿ªÀÇ Åä¾ç¼öºÐ ºÐÆ÷¿Í ¿ì¸®³ª¶ó Àü¿ª¿¡ ´ëÇÑ Åä¾ç¼öºÐ ºÐÆ÷µµ¸¦ ÃßÁ¤ÇÏ¿´´Ù. ´Ù¾çÇÑ Áö»óÁ¶°Ç¿¡ ´ëÇÏ¿© ½Å·ÚÇÒ ¼ö ÀÖ´Â Áö»ó°üÃø Åä¾ç¼öºÐ °üÃøÄ¡°¡ Á¸ÀçÇÏÁö ¾Ê´Â ÇѰ谡 ÀÖÀ½¿¡µµ ºÒ±¸Çϰí Á¦½ÃµÈ Åä¾ç¼öºÐÃßÁ¤¹æ¹ýÀº Á¦ÇÑµÈ °¡¿ëÀڷḦ »ç¿ëÇÑ ¿ì¸®³ª¶ó Àü¿ªÀÇ Åä¾ç¼öºÐ ÃßÁ¤¿¡ ÀÖ¾î ÇÕ¸®ÀûÀÎ Á¢±Ù¹ýÀ̶ó ÆÇ´ÜµÈ´Ù. |
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| In this study, a method for soil moisture estimation was proposed to obtain the nationwide soil moisture distribution map using on-site soil moisture observations, rainfall, surface temperature, NDVI, land cover, effective soil depth, and CART (Classification And Regression Tree) algorithm. The method was applied to the Yong-dam dam basin since the soil moisture data (4 sites) of the basin were reliable. Soil moisture observations of 3 sites (Bu-gui, San-jeon, Cheon-cheon2) were used for training the algorithm and 1 site (Gye-buk2) was used for the algorithm validation. The correlation coefficient between the observed and estimated data of soil moisture in the validation sites is about 0.737. Results show that even though there are limitations of the lack of reliable soil moisture observation for various land use, soil type, and topographic conditions, the soil moisture estimation method using ancillary data and CART algorithm can be a reasonable approach since the algorithm provided a fairly good estimation of soil moisture distribution for the study area. |
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| Ű¿öµå |
| Åä¾ç¼öºÐ;ÀÇ»ç°áÁ¤³ª¹«;°¼ö·®;soil moisture;CART;decision tree;rainfall; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.43, no.7, 2010³â, pp.597-608
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201022262412318)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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