Persistent Link:
http://hdl.handle.net/10150/277119
Title:
Spectral properties of paddy rice with variable water depth
Author:
Qi, Jiaguo, 1959-
Issue Date:
1989
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
An experiment was conducted to determine whether the water depth (above soil) and soil type would have any influence on the multispectral reflectances of paddy rice, and their calculated vegetation index values. The results showed that, when vegetation cover was low (below 600 grams of dry biomass per square meter), the near infrared (NIR) reflectances decreased very little with water depth. The same was true for red reflectances, but to a lesser degree. Overall the changes were not significant at 0.05 level of significance when the water depth was increased from 2.5 centimeters to 10 centimeters. When the vegetation cover became higher most NIR and red reflectances did not show a significant decrease with the increase of the water depth, and sometimes they even increased slightly up to a water depth of 6.4 cm. Nevertheless both rice cover and water depth as well as soils played an important role in the reflectance pattern in red and NIR bands. Some index values increased and some decreased depending on water depth and rice cover. Statistical analysis of the data showed that rice multispectral responses were mainly controlled by vegetation and minimally influenced by soil and water depths.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Rice -- Remote sensing.; Water -- Remote sensing.; Soils -- Remote sensing.; Spectral reflectance.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Soil and Water Science
Degree Grantor:
University of Arizona
Advisor:
Huete, Alfredo R.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleSpectral properties of paddy rice with variable water depthen_US
dc.creatorQi, Jiaguo, 1959-en_US
dc.contributor.authorQi, Jiaguo, 1959-en_US
dc.date.issued1989en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractAn experiment was conducted to determine whether the water depth (above soil) and soil type would have any influence on the multispectral reflectances of paddy rice, and their calculated vegetation index values. The results showed that, when vegetation cover was low (below 600 grams of dry biomass per square meter), the near infrared (NIR) reflectances decreased very little with water depth. The same was true for red reflectances, but to a lesser degree. Overall the changes were not significant at 0.05 level of significance when the water depth was increased from 2.5 centimeters to 10 centimeters. When the vegetation cover became higher most NIR and red reflectances did not show a significant decrease with the increase of the water depth, and sometimes they even increased slightly up to a water depth of 6.4 cm. Nevertheless both rice cover and water depth as well as soils played an important role in the reflectance pattern in red and NIR bands. Some index values increased and some decreased depending on water depth and rice cover. Statistical analysis of the data showed that rice multispectral responses were mainly controlled by vegetation and minimally influenced by soil and water depths.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectRice -- Remote sensing.en_US
dc.subjectWater -- Remote sensing.en_US
dc.subjectSoils -- Remote sensing.en_US
dc.subjectSpectral reflectance.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineSoil and Water Scienceen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorHuete, Alfredo R.en_US
dc.identifier.proquest1338082en_US
dc.identifier.oclc23112548en_US
dc.identifier.bibrecord.b17571145en_US
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