Pedosphere 14(4): 519--526, 2004
ISSN 1002-0160/CN 32-1315/P
©2004 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Rice yield estimation by integrating remote sensing with rice growth simulation model
O. ABOU-ISMAIL1,2, HUANG Jing-Feng1, WANG Ren-Chao1
1 Institute of Agricultural Remote Sensing & Information Application, Zhejiang University, Hangzhou 310029 (China). E-mail: ousamal9@yahoo.com
2 The General Organization of Remote Sensing (GORS), P. O Box 12586, Damascus (Syria)
ABSTRACT
      Since remote sensing can provide information on the actual status of an agricultural crop, the integration between remote sensing data and crop growth simulation models has become an important trend for yield estimation and prediction. The main objective of this research was to combine a rice growth simulation model with remote sensing data to estimate rice grain yield for different growing seasons leading to an assessment of rice yield at regional levels. Integration between NOAA (National Oceanic and Atmospheric Administration) AVHRR (Advanced Very High Resolution Radiometer) data and the rice growth simulation model ORYZA1 to develop a new software, which was named as Rice-SRS Model, resulted in accurate estimates for rice yield in Shaoxing, China, with an estimation error reduced to 1.03% and 0.79% over-estimation and 0.79% under-estimation for early, single and late season rice, respectively. Selecting suitable dates for remote sensing images was an important factor which could influence estimation accuracy. Thus, given the different growing periods for each rice season, four images were needed for early and late rice, while five images were preferable for single season rice. Estimating rice yield using two or three images was possible, however, if images were obtained during the panicle initiation and heading stages.
Key Words:  remote sensing, rice growth simulation model, rice yield estimation
Citation: Abou-ismail, O., Huang, J. F. and Wang, R. C. 2004. Rice yield estimation by integrating remote sensing with rice growth simulation model. Pedosphere. 14(4): 519-526.
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