Show simple item record

dc.contributor.advisorHuete, Alfredo R.en_US
dc.contributor.authorQi, Jiaguo, 1959-
dc.creatorQi, Jiaguo, 1959-en_US
dc.date.accessioned2013-03-28T10:29:28Zen
dc.date.available2013-03-28T10:29:28Zen
dc.date.issued1989en_US
dc.identifier.urihttp://hdl.handle.net/10150/277119en
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.
dc.language.isoen_USen_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.subjectRice -- Remote sensing.en_US
dc.subjectWater -- Remote sensing.en_US
dc.subjectSoils -- Remote sensing.en_US
dc.subjectSpectral reflectance.en_US
dc.titleSpectral properties of paddy rice with variable water depthen_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.identifier.oclc23112548en_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.levelmastersen_US
dc.identifier.proquest1338082en_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineSoil and Water Scienceen_US
thesis.degree.nameM.S.en_US
dc.identifier.bibrecord.b17571145en_US
refterms.dateFOA2018-07-14T22:10:35Z
html.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.


Files in this item

Thumbnail
Name:
azu_td_1338082_sip1_w.pdf
Size:
9.678Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record