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Çѱ¹ÀܵðÇÐȸ / v.22, no.1, 2008³â, pp.1-12
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³ÁöÇü ÀܵðÀÇ °¡¹³ ½ºÆ®·¹½º »óÅ·ΠÀÎÇÑ ¸ÖƼ½ºÆÑÆ®·² ¹Ý»ç±¤ ¿¬±¸
( Multi-Spectral Reflectance of Warm-Season Turfgrasses as Influenced by Deficit Irrigation ) |
| ÀÌÁØÈñ;;; ÇÔÆò ´ÙÀ̳ʽºÆ¼ C.C.;Ç÷θ®´Ù ´ëÇб³ ȯ°æ¿ø¿¹Çаú;Ç÷θ®´Ù ´ëÇб³ ȯ°æ¿ø¿¹Çаú;
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| Multi-spectral radiometer (MSR)¸¦ »ç¿ëÇÑ ¸®¸ðÆ® ¼¾½Ì ±â¼úÀÌ Çâ ÈÄ ÀܵðÀÇ °ÇÁ¶½ºÆ®·¹½º¸¦ °¨ÁöÇÒ ¼ö ÀÖ´Â µµ±¸·Î »ç¿ëµÉ ¼ö ÀÖ´Ù. º» ¿¬±¸ÀÇ ¸ñÀûÀº ³×°¡Áö °¢±â ´Ù¸¥ Á¶°ÇÀÇ °ÇÁ¶½ºÆ®·¹½º¸¦ ¹ÞÀº ³ÁöÇü ÀܵðÀÇ ÀÙ¿¡¼ ¹Ý»çµÇ´Â Reflectance¿Í Åä¾ç¼öºÐ, ºñÁÖ¾ó Àܵð»óÅÂ, ¿±·Ï¼Ò ÇÔ·®, ±¤ÇÕ¼º µîÀ» ÃøÁ¤ÇÏ¿© °¢ factor°£ÀÇ »ó°ü°ü°è¸¦ Á¶»çÇßÀ¸¸ç º» ¿¬±¸¸¦ ÅëÇØ ¸ðµç factor°¡ MSR µ¥ÀÌÅÍ¿Í ÁúÀº »ó°ü°ü°è¸¦ °¡Áö°í ÀÖ¾ú´Ù. ¶ÇÇÑ Reflectance ¹Î°¨µµ´ÂVisual spectral regionº¸´Ù Infrared spectral region¿¡¼ ´õ ³ôÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ¸ðµç °á°ú¸¦ Á¾ÇÕÇØ º¼ ¶§ Multi-spectral radiometer (MSR)Àº ÀܵðÀÇ °ÇÁ¶»óŸ¦ ¹Ì¸® ¿¹ÃøÇÒ ¼ö ÀÖ´Â µµ±¸·Î »ç¿ëµÉ ¼ö ÀÖÀ½À» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ÀÌ ±â¼úÀÇ ÀڷḦ Ȱ¿ëÇÏ°Ô µÈ´Ù¸é Çâ ÈÄ MSRÀÌ ºÎÂøµÈ ±â±¸(Balloon)¸¦ ÀÌ¿ëÇÑ ÇÊµå ½ºÅ͵𠿬±¸·Î È®´ëµÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù. |
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| Remote sensing using multispectral radiometry may be a useful tool to detect drought stress in turf. The objective of this research was to investigate the correlation between drought stress and multispectral reflectance (MSR) from the turf canopy. St. Augustinegrass (Stenotaphrum secundatum[Walt.] Kuntze.) cultivars 'Floratam' and 'Palmetto', 'SeaIsle 1' seashore paspalum Paspalum vaginatum Swartz.), 'Empire' zoysiagrass (Zoysia japonica Steud.), and 'Pensacola' bahiagrass (Paspalum notatumFlugge) were established in lysimeters in the University of Florida Envirotron greenhouse facility in Gainesville. Irrigation was applied at 100%, 80%, 60%, or 40% of evapotranspiration (ET). Weekly evaluations included: a) shoot quality, leaf rolling, leaf firing b) soil moisture, chlorophyll content index; c) photosynthesis and d) multispectral reflectance. All the measurements were correlated with MSR data. Drought stress affected the infrared spectral region more than the visible spectral region. Reflectance sensitivity to water content of leaves was higher in the infrared spectral region than in the visible spectral region. Grasses irrigated at 100% and 80% of ET had no differences in normalized difference vegetation indices (NDVI), leaf area index (LAI), and stress indices. Grasses irrigated at 60% and 40% of ET had differences in NDVI, LAI, and stress indices. All measured wavelengths except 710nm were highly correlated (P < 0.0001) with turf visual quality, leaf firing, leaf rolling, soil moisture, chlorophyll content index, and photosynthesis. MSR could detect drought stress from the turf canopy. |
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| Ű¿öµå |
| °¡¹³ ½ºÆ®·¹½º;Áõ¹ß»ê·®;drought stress;multi-spectral reflectance;deficit irrigation;evapotranspiration; |
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Çѱ¹ÀܵðÇÐȸÁö / v.22, no.1, 2008³â, pp.1-12
Çѱ¹ÀܵðÇÐȸ
ISSN : 1229-3253
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200828837396940)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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