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