DocumentCode :
410405
Title :
Using the NDVI contribution ratio at different growth stages to estimate winter wheat yield
Author :
JING, Juan-juan ; WANG, Ji-hua ; WANG, Peng-xin ; PAN, Yu-chun ; LIU, Liang-yun ; WANG, Jin-di ; WANG, Hua ; HUANG, Wen-jiang
Author_Institution :
Nat. Eng. Res. Center for Inf. Technol. in Agric., Beijing, China
Volume :
1
fYear :
2003
fDate :
21-25 July 2003
Firstpage :
377
Abstract :
This paper mainly proposed using multi-temporal spectral data with given weight to estimate yield using contribution ratios of different stages to improve yield estimation, then use stepwise regression to build models for yield estimation. The contribution ratio is calculated by principal component analysis respectively. Result show that this methodology reflects the crop growth status, physiological characters at different stages, and improves the accuracy obviously.
Keywords :
agriculture; crops; data acquisition; vegetation mapping; NDVI contribution ratio; crop growth stages; multitemporal spectral data; normalized difference vegetation index; physiological characters; principal component analysis; stepwise regression; winter wheat yield; yield estimation; Agricultural engineering; Agriculture; Crops; Economic forecasting; Fertilizers; Reflectivity; Remote sensing; Variable speed drives; Vegetation; Yield estimation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
Type :
conf
DOI :
10.1109/IGARSS.2003.1293781
Filename :
1293781
Link To Document :
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