Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/22884
Full metadata record
DC FieldValueLanguage
dc.contributor.authorAlam, Muhammad Shahinuren
dc.contributor.authorLamb, Daviden
dc.contributor.authorRahman, Moshiur Men
dc.date.accessioned2018-04-23T09:42:00Z-
dc.date.issued2018-
dc.identifier.citationComputers and Electronics in Agriculture, v.147, p. 12-17en
dc.identifier.issn1872-7107en
dc.identifier.issn0168-1699en
dc.identifier.urihttps://hdl.handle.net/1959.11/22884-
dc.description.abstractThe estimation of actual crop evapotranspiration (ETc) from any given land cover or crop type is important for irrigation water management and agricultural water consumption analysis. The main parameter used for such estimations is the crop coefficient (Kc). Spectral reflectance indices, such as the normalized difference vegetation index (NDVI) and the crop coefficient of a specific crop or pasture canopy are important indicators of 'vigour', namely the photosynthetic activity and rate of biomass accumulation. Measuring both parameters simultaneously, with a view to understanding how they interact, or for creating optical, surrogate indicators of Kc is very difficult because Kc itself is difficult to measure. In this study a portable enclosed chamber was used to measure ETc of a pasture and subsequently calculated Kc from reference evapotranspiration (ETo) data derived from a nearby automatic weather station (AWS). Calibration of the chamber confirms the suitability of the device to measure the amount of water vapour produced by local plant evapotranspiration, producing a calibration factor (C) close to 1 (C=1.02, R2=0.87). The coincident NDVI values were measured using a portable active optical sensor. In a test involving a pasture (Festuca arundinacea var. Dovey) at two different stages of growth in two consecutive growing seasons, the NDVI and crop coefficients were observed to be strongly correlated (R2=0.80 and 0.77, respectively). A polynomial regression (R2=0.84) was found to be the best fit for the combined, multi-temporal Kc-NDVI relationship. The main advantages of this method include the suitability of operating at a smaller scale (<1 m2), in real time and repeatability.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofComputers and Electronics in Agricultureen
dc.titleA refined method for rapidly determining the relationship between canopy NDVI and the pasture evapotranspiration coefficienten
dc.typeJournal Articleen
dc.identifier.doi10.1016/j.compag.2018.02.008en
dc.subject.keywordsCrop and Pasture Biomass and Bioproductsen
dc.subject.keywordsCrop and Pasture Productionen
dc.subject.keywordsFarming Systems Researchen
local.contributor.firstnameMuhammad Shahinuren
local.contributor.firstnameDaviden
local.contributor.firstnameMoshiur Men
local.subject.for2008070107 Farming Systems Researchen
local.subject.for2008070399 Crop and Pasture Production not elsewhere classifieden
local.subject.for2008070304 Crop and Pasture Biomass and Bioproductsen
local.subject.seo2008960905 Farmland, Arable Cropland and Permanent Cropland Water Managementen
local.subject.seo2008830499 Pasture, Browse and Fodder Crops not elsewhere classifieden
local.profile.schoolSchool of Science and Technologyen
local.profile.schoolSchool of Science and Technologyen
local.profile.emailmalam3@myune.edu.auen
local.profile.emaildlamb@une.edu.auen
local.profile.emailmrahma37@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20180226-111243en
local.publisher.placeNetherlandsen
local.format.startpage12en
local.format.endpage17en
local.identifier.scopusid85042199019en
local.peerreviewedYesen
local.identifier.volume147en
local.contributor.lastnameAlamen
local.contributor.lastnameLamben
local.contributor.lastnameRahmanen
dc.identifier.staffune-id:malam3en
dc.identifier.staffune-id:dlamben
dc.identifier.staffune-id:mrahma37en
local.profile.orcid0000-0002-2917-2231en
local.profile.orcid0000-0001-6430-0588en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:23068en
local.identifier.handlehttps://hdl.handle.net/1959.11/22884en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleA refined method for rapidly determining the relationship between canopy NDVI and the pasture evapotranspiration coefficienten
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorAlam, Muhammad Shahinuren
local.search.authorLamb, Daviden
local.search.authorRahman, Moshiur Men
local.uneassociationUnknownen
local.identifier.wosid000428828200003en
local.year.published2018en
local.fileurl.closedpublishedhttps://rune.une.edu.au/web/retrieve/6048d987-76b3-48df-b220-c66d8248073den
local.subject.for2020300405 Crop and pasture biomass and bioproductsen
local.subject.seo2020180699 Terrestrial systems and management not elsewhere classifieden
local.subject.seo2020180607 Terrestrial erosionen
dc.notification.token7d2716b1-8f10-4eb4-ad38-fdbe382bcb15en
local.codeupdate.date2022-02-09T16:46:46.644en
local.codeupdate.epersonmrahma37@une.edu.auen
local.codeupdate.finalisedtrueen
local.original.for2020300405 Crop and pasture biomass and bioproductsen
local.original.for2020undefineden
local.original.for2020undefineden
local.original.seo2020180699 Terrestrial systems and management not elsewhere classifieden
local.original.seo2020undefineden
local.original.seo2020180607 Terrestrial erosionen
Appears in Collections:Journal Article
School of Science and Technology
Files in This Item:
2 files
File Description SizeFormat 
Show simple item record

SCOPUSTM   
Citations

24
checked on Dec 21, 2024

Page view(s)

1,968
checked on Feb 25, 2024
Google Media

Google ScholarTM

Check

Altmetric


Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.