지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Radar remote sensing is appropriate for rice monitoring because the areas where this crop is cultivated are often cloudy and rainy. Especially, SyntheticAperture Radar (SAR) can acquire remote sensing information with a high temporal resolution in tropical and subtropical regions due to its all-weathercapability. This paper analyzes the relationships between backscattering coefficients of rice measured by RADARSAT-2 SAR and growth parametersduring a rice growth period. And we applied the relationships to crop monitoring of paddy rice in North Korea. As a result, plant height and Leaf AreaIndex (LAI) increased until Day Of Year (DOY) 234 and then decreased, while fresh weight and dry weight increased until DOY 253. Correlationcoefficients revealed that Horizontal transmit and Horizontal receive polarization (HH)-polarization backscattering coefficients were correlated highlywith plant height (r=0.95), fresh weight (r=0.92), vegetation water content (r=0.91), LAI (r=0.90), and dry weight (r=0.89). Based on the observedrelationships between backscattering coefficients and variables of cultivation, prediction equations were developed using the HH-polarizationbackscattering coefficients. Concerning the evaluation for the applicability of the LAI distribution from RADARSAT-2, the LAI statistic was evaluatedin comparison with LAI distribution from RapidEye image. And LAI distributions in Pyongyang were presented to show spatial variability forunaccessible areas.
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참고문헌 (25)
참고문헌 신청
/ / Korea Aerospace Research Institute Homepage
Baret, F. / 1991 / Potentials and limits of vegetation indices for LAI and aFAR assessment / Remote Sensing of Environment 35 : 161 ~ 173
Bouvet, A. / 2011 / Use of ENVISAT/ASAR wide-swath data for timely rice fields mapping in the Mekong River Delta / Remote Sensing of Environment 115 (4) : 1090 ~ 1101
Chen, J. / 2007 / Application of ENVISAT ASAR data in mapping rice crop growth in Southern China / IEEE Geoscience Remote Sensing Letter 4 : 431 ~ 435
Curran, P. J. / 1992 / Seasonal LAI measurements in slash pine using Landsat TM / Remote Sensing of Environment 39 : 3 ~ 13
Baret, F. / 1991 / Potentials and limits of vegetation indices for LAI and aFAR assessment / Remote Sensing of Environment 35 : 161 ~ 173
Bouvet, A. / 2011 / Use of ENVISAT/ASAR wide-swath data for timely rice fields mapping in the Mekong River Delta / Remote Sensing of Environment 115 (4) : 1090 ~ 1101
Chen, J. / 2007 / Application of ENVISAT ASAR data in mapping rice crop growth in Southern China / IEEE Geoscience Remote Sensing Letter 4 : 431 ~ 435
Curran, P. J. / 1992 / Seasonal LAI measurements in slash pine using Landsat TM / Remote Sensing of Environment 39 : 3 ~ 13
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