Year 2014, Volume 3 , Issue 3, Pages 163 - 171 2014-11-21

Spectral estimation of soil water content in visible and near infra-red range

Attila NAGY [1] , Péter RİCZU [2] , Bernadett GÁLYA [3] , János TAMÁS [4]


Soils can be examined on the basis of spectral data, using such methods with which the reflected radiation can be divided into a large number of (several hundreds) small spectral channel (some nm). Based on the spectral characteristics of the soils, or the different index numbers calculated from hyperspectral data water content of soils can be well characterized. The examined soil samples were coming from different apple orchards of which soils had different physical characteristics (sandy loamy and clay). The goals of my experiments were the evaluation of spectral measurement method for soil content detection, and to carry out algorithms for fast field scale spectral evaluation of different soil water content. The spectral measuring was carried out by laboratory scale AvaSpec 2048 spectrometer at 400 – 1000 nm wavelength interval with 0.6 nm spectral resolutions and by ASD FieldSpec Junior at 350 – 2500 nm. After drying, dry soil samples were watered by 2.5 m/m% till maximal saturation, and each wetting was measured spectrally. Based on spectral properties, reflectances were decreased in the whole spectral range within the continuous wetting due to the high absorption characteristics of water. The most water sensitive spectral ranges were selected by principal component, and such algorithms were created, with which the water content can be detectable in the certain soil. The algorithms can facilitate farmers for irrigation scheduling of their orchards. These results can also be utilizable in precision water management, since it can be a basis for such integrated active sensors with LED or laser light source, measuring reflectance at the certain spectral range, which can facilitate real time water status assessment of orchards.  

spectral index, soil moisture, reflectance
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Primary Language en
Journal Section Articles
Authors

Author: Attila NAGY

Author: Péter RİCZU

Author: Bernadett GÁLYA

Author: János TAMÁS

Dates

Publication Date : November 21, 2014

Bibtex @ { ejss73474, journal = {Eurasian Journal of Soil Science}, issn = {}, eissn = {2147-4249}, address = {}, publisher = {Avrasya Toprak Bilimleri Dernekleri Federasyonu}, year = {2014}, pages = {163 - 171}, doi = {10.18393/ejss.69645}, title = {Spectral estimation of soil water content in visible and near infra-red range}, key = {cite}, author = {NAGY, Attila and RİCZU, Péter and GÁLYA, Bernadett and TAMÁS, János} }
APA NAGY, A , RİCZU, P , GÁLYA, B , TAMÁS, J . (2014). Spectral estimation of soil water content in visible and near infra-red range. Eurasian Journal of Soil Science , 3 (3) , 163-171 . DOI: 10.18393/ejss.69645
MLA NAGY, A , RİCZU, P , GÁLYA, B , TAMÁS, J . "Spectral estimation of soil water content in visible and near infra-red range". Eurasian Journal of Soil Science 3 (2014 ): 163-171 <https://dergipark.org.tr/en/pub/ejss/article/73474>
Chicago NAGY, A , RİCZU, P , GÁLYA, B , TAMÁS, J . "Spectral estimation of soil water content in visible and near infra-red range". Eurasian Journal of Soil Science 3 (2014 ): 163-171
RIS TY - JOUR T1 - Spectral estimation of soil water content in visible and near infra-red range AU - Attila NAGY , Péter RİCZU , Bernadett GÁLYA , János TAMÁS Y1 - 2014 PY - 2014 N1 - doi: 10.18393/ejss.69645 DO - 10.18393/ejss.69645 T2 - Eurasian Journal of Soil Science JF - Journal JO - JOR SP - 163 EP - 171 VL - 3 IS - 3 SN - -2147-4249 M3 - doi: 10.18393/ejss.69645 UR - https://doi.org/10.18393/ejss.69645 Y2 - 2020 ER -
EndNote %0 Eurasian Journal of Soil Science Spectral estimation of soil water content in visible and near infra-red range %A Attila NAGY , Péter RİCZU , Bernadett GÁLYA , János TAMÁS %T Spectral estimation of soil water content in visible and near infra-red range %D 2014 %J Eurasian Journal of Soil Science %P -2147-4249 %V 3 %N 3 %R doi: 10.18393/ejss.69645 %U 10.18393/ejss.69645
ISNAD NAGY, Attila , RİCZU, Péter , GÁLYA, Bernadett , TAMÁS, János . "Spectral estimation of soil water content in visible and near infra-red range". Eurasian Journal of Soil Science 3 / 3 (November 2014): 163-171 . https://doi.org/10.18393/ejss.69645
AMA NAGY A , RİCZU P , GÁLYA B , TAMÁS J . Spectral estimation of soil water content in visible and near infra-red range. EJSS. 2014; 3(3): 163-171.
Vancouver NAGY A , RİCZU P , GÁLYA B , TAMÁS J . Spectral estimation of soil water content in visible and near infra-red range. Eurasian Journal of Soil Science. 2014; 3(3): 171-163.