Estimation of spring crops sowing calendar dates using MODIS in Northern Kazakhstan

Author

Muratova, Nadiya ; Terekhov, Alexey

Author_Institution

Space Res. Inst., Minist. of Educ. & Sci., Almaty

Volume

6

fYear

2004

fDate

20-24 Sept. 2004

Firstpage

4019

Abstract

Sowing period for spring crop lasts usually more than 40 days in Northern Kazakhstan. Calendar dates of sowing are important for final crop productivity, which can be varied about 30% in relation to this factor. IMODIS data and ground survey in 2003 were used as the base for developing of cropland sowing date estimation procedure. Spectral characteristics of crop fields are changed after sowing. Values of near infrared reflectance (band 2) increase during 40-60 days after sowing. This effect is used for estimation of cropland sowing dates. Cloudless MODIS images dated by June 15-25 are used for processing. Ground survey data used for creation of calibration curve between sowing calendar date and reflectance (MODIS, band 2) for separate fields. Accuracy of calibration procedure is enough for three classes of sowing calendar dates recognition namely: early, normal, late

Keywords

agriculture; crops; geophysical signal processing; image processing; infrared imaging; terrain mapping; vegetation mapping; AD 2003 06 15 to 25; IMODIS data; MODIS; Northern Kazakhstan; calibration curve; crop productivity; cropland sowing date estimation; ground survey; image processing; near infrared reflectance; spring crop sowing calendar; Calendars; Calibration; Crops; Earth Observing System; Educational products; MODIS; Productivity; Reflectivity; Springs; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International

Conference_Location

Anchorage, AK

Print_ISBN

0-7803-8742-2

Type

conf

DOI

10.1109/IGARSS.2004.1370010

Filename

1370010