Abstract: The comparisons of single band reflectance and vegetation index between Terra MODIS and Aqua MODIS showed that Terra MODIS and Aqua MODIS had significant correlations in single band reflectance and vegetation index, and the correlations for vegetation index were more obvious than for single band reflectance. The values of single band reflectance from Terra MODIS were lower than those from Aqua MODIS, but vegetation indices were in reverse. In addition, the differences of single band reflectance and vegetation index between Terra MODIS and Aqua MODIS changed over time, and they were greater in winter for vegetation indices, and in summer and autumn for single band reflectance. For different vegetation types, the differences of vegetation indices between Terra MODIS and Aqua MODIS showed a similar rule, while the differences of single band reflectance between Terra MODIS and Aqua MODIS were complicated. The differences in single band reflectance and vegetation index between Terra MODIS and Aqua MODIS were smaller for meadow and plain than for other vegetations, but greater for broadleaf forest and annual doubleharvest crops.

Key words: Maize growth, N₂O emission from soil, N application, Temperature