Title :
Evaluation of MODIS data for assessment of regional spring wheat yield in Kazakhstan
Author :
Doraiswamy, Paul ; Muratova, Nadiya ; Sinclair, Thomas ; Stern, Alan ; Akhmedov, Bakhyt
Author_Institution :
Hydrology & Remote Sensing Lab., U.S. Dept. of Agric., Beltsville, MD, USA
Abstract :
The new MODIS satellite imagery offers an opportunity for operational applications. The 1-km AVHRR imagery is not suitable for retrieval of field level parameter and the Landsat data is not frequent enough for monitoring changes in crop parameters during the critical crop growth periods. The objective of this research is to evaluate the application of MODIS data for crop yields assessment in the spring wheat belt of north Kazakhstan. Field measurements during the season included crop reflectance, leaf area index (LAI), biomass and final yields. A radiative transfer model was used to develop the LAI parameters from the MODIS 250-m data. The magnitude and spatial variability of crop yield estimates were compared with ground-based yield samples. Spring wheat crop yields were simulated using a crop model with LAI generated from MODIS imagery. Yield results were within the limits reported by the Kazakhstan Ministry of Agriculture.
Keywords :
agriculture; geophysical techniques; vegetation mapping; IR; Kazakhstan; MODIS; Triticum; agriculture; biomass; crop growth; crop reflectance; crops; geophysical measurement technique; infrared; leaf area index; multispectral remote sensing; regional yield; satellite imagery; satellite remote sensing; spring wheat; vegetation mapping; visible; wheat; wheat crop; yields; Area measurement; Belts; Condition monitoring; Crops; Image retrieval; Information retrieval; MODIS; Remote sensing; Satellites; Springs;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International
Print_ISBN :
0-7803-7536-X
DOI :
10.1109/IGARSS.2002.1025082
