Study on the influence of drought to crop growth based on SAR remote sensing

Author

Cai, Aimin ; Shao, Yun ; Zhang, Fengli ; Gong, Huaze

Author_Institution

Inst. of Remote Sensing Applic., Chinese Acad. of Sci., Beijing, China

Volume

4

fYear

2009

fDate

12-17 July 2009

Abstract

This paper aims to get the relationship between drought and crop growth. By investigating synthetic aperture radar (SAR) backscattering coefficients, HH- and VV- polarization were found different due to influence from canopy, because of strong attenuation of the VV- polarization by the vertically oriented wheat stems. In small incidence angle, HH is sensitive to soil moisture, while VV is more sensitive to canopy. Two classes of crop with low and high soil moisture are investigated by Â¿water-cloudÂ¿ model with vegetation descriptor vegetation water mass (VWM). Parameters of the model show that in drought the crop growth will be worse. This research presents that it is possible to study the influence of drought to wheat growth with small incidence angle of C-band SAR.

Keywords

backscatter; crops; hydrological techniques; hydrology; radar polarimetry; rain; remote sensing by radar; soil; synthetic aperture radar; C-band SAR; HH-polarization; SAR remote sensing; VV-polarization; crop growth; drought; soil moisture; synthetic aperture radar backscattering coefficient; vegetation descriptor; vegetation water mass; vertically oriented wheat stems; water-cloud model; Backscatter; Biomass; Crops; Geometry; Optical sensors; Polarization; Remote sensing; Soil moisture; Vegetation mapping; Weather forecasting; Drought; SAR; crop growth; water-cloud model;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009

Conference_Location

Cape Town

Print_ISBN

978-1-4244-3394-0

Electronic_ISBN

978-1-4244-3395-7

Type

conf

DOI

10.1109/IGARSS.2009.5417393

Filename

5417393