LAI Model of Spring Wheat in Ningxia Irrigated Area Based on MODIS-Ⅵ

Abstract

Abstract: The correlation between LAI and MODIS-Ⅵ was analyzed based on 4 years experimental data of spring wheat(2005-2008) and MODIS/Terra data in Yongning national agro-meteorological experiment station.The results showed that there no significant correlation between MODIS-Ⅵ and LAI from heading stage to milky stage,but there was significant correlation between MODIS-Ⅵ and LAI from 3-leaf stage to the jointing stage except for the RDSI,NDSI.R2was 0.9759,RMSE was 0.5519,and accuracy was 1.0745 between the true values and the simulated values.The results indicated that the model had reliability and applicability,which could apply to growth monitoring,yield estimating for spring wheat and parameters adjusting for crop model in future.

Key words: MODIS, MODIS, LAI, Ⅵ, Simulate

ZHANG Xue-yi1,2,GUO Jian-mao1,HAN Ying-juan2,CAO Ning2,DUAN Xiao-feng1,GUAN Jing-de3(1.Nanjing University Information Science and Technology,Nanjing 210044,China;2.Ningxia Key Laboratoryfor Meteorological Disaster Prevention and Reduction,Yinchuan 750002;3.Yongning NationalAgro-meteorological Experiment Station,Yongning 750015). LAI Model of Spring Wheat in Ningxia Irrigated Area Based on MODIS-Ⅵ[J]. Chinese Journal of Agrometeorology.

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LAI Model of Spring Wheat in Ningxia Irrigated Area Based on MODIS-Ⅵ

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