11 January 2007 Validation of MOD15-LAI and MOD13 using in situ rice data
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Before MODIS products will be applied in rice monitoring, it need to be validated. A site-intensive MODIS product validation on rice planting region in southern China was performed. Validation approach involved scaling up independent fine-grained datasets, including ground and high spatial resolution imagery (Thematic Mapper), to the coarser MODIS spatial resolutions. Results showed that The difference between situ rice LAI and MOD15-LAI in different rice growth sage is different. The differences are bigger in booting stage, heading stage and milking stage, but smaller in tiller stage and maturing stage. The 16-day composited MODIS reflectance and VIs matched well with ground measurement reflectance and VIs. Otherwise, results indicate that the MODIS algorithm will underestimate LAI value by about 5-10 % in total from 1-km resolution data over the Situ rice LAI at Southern China, the mean and standard deviation deviated from MOD15-LAI are smaller than that of situ rice LAI.
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Xiuju Wu, Xiuju Wu, Qian Cheng, Qian Cheng, Zhihua Mao, Zhihua Mao, } "Validation of MOD15-LAI and MOD13 using in situ rice data", Proc. SPIE 6411, Agriculture and Hydrology Applications of Remote Sensing, 64111F (11 January 2007); doi: 10.1117/12.693314; https://doi.org/10.1117/12.693314

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