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.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.8
- 수록면
- 245 - 252 (8page)
이용수
초록· 키워드
오류제보하기
Leaf area index (LAI) is important in explaining the ability of crops to intercept solar energy for biomass production, amount of plant transpiration, and in understanding the impact of crop management practices on crop growth. This paper describes a procedure for estimating LAI as a function of image?derived vegetation indices from temporal series of RapidEye imagery obtained from 2010 to 2012 using empirical models in a rice plain in Seosan, Chungcheongnam?do. Rice plants were sampled every two weeks to investigate LAI, fresh and dry biomass from late May to early October. RapidEye images were taken from June to September every year and corrected geometrically and atmospherically to calculate normalized difference vegetation index (NDVI). Linear, exponential, and expolinear models were developed to relate temporal satellite NDVIs to measured LAI. The expolinear model provided more accurate results to predict LAI than linear or exponential models based on root mean square error. The LAI distribution was in strong agreement with the field measurements in terms of geographical variation and relative numerical values when RapidEye imagery was applied to expolinear model. The spatial trend of LAI corresponded with the variation in the vegetation growth condition.
목차
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
참고문헌 (25)
참고문헌 신청
1. [학술지(정기간행물)] - Anderson, M. C. / 2004 / Upscaling ground observations of vegetation water content, canopy height, and leaf area index during SMEX02 using aircraft and Landsat imagery / Remote Sensing of Environment 92 : 447 ~ 464
2. [학술지(정기간행물)] - Gebhardt, S. / 2012 / A comparison of Terra SAR‐X Quadpol backscattering with RapidEye multispectral vegetation indices over rice fields in the Mekong Delta, Vietnam / International Journal of Remote Sensing 33 (24) : 7644 ~ 7661
3. [학술지(정기간행물)] - Goudriaan, J. / 1990 / A mathematical function for crop growth based on light interception and leaf area expansion / Annals of Botany 66 : 695 ~ 701
4. [학술지(정기간행물)] - Gower, S. / 1999 / Direct and indirect estimation of leaf area index, fAPAR, and net primary production of terrestrial ecosystems / Remote Sensing of Environment 70 : 29 ~ 51
5. [학술지(정기간행물)] - Hatfield, J. L. / 1976 / Evaluation of an electronic foliometer to measure leaf area in corn and soybean / Agronomy Journal 68 : 434 ~ 436
2. [학술지(정기간행물)] - Gebhardt, S. / 2012 / A comparison of Terra SAR‐X Quadpol backscattering with RapidEye multispectral vegetation indices over rice fields in the Mekong Delta, Vietnam / International Journal of Remote Sensing 33 (24) : 7644 ~ 7661
3. [학술지(정기간행물)] - Goudriaan, J. / 1990 / A mathematical function for crop growth based on light interception and leaf area expansion / Annals of Botany 66 : 695 ~ 701
4. [학술지(정기간행물)] - Gower, S. / 1999 / Direct and indirect estimation of leaf area index, fAPAR, and net primary production of terrestrial ecosystems / Remote Sensing of Environment 70 : 29 ~ 51
5. [학술지(정기간행물)] - Hatfield, J. L. / 1976 / Evaluation of an electronic foliometer to measure leaf area in corn and soybean / Agronomy Journal 68 : 434 ~ 436
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UCI(KEPA) : I410-ECN-0101-2014-520-002466111