Satellite sun‐induced chlorophyll fluorescence detects early response of winter wheat to heat stress in the Indian Indo‐Gangetic Plains

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cg.authorship.typesCGIAR single centreen
cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationInternational Food Policy Research Instituteen
cg.contributor.crpWater, Land and Ecosystems
cg.coverage.countryIndia
cg.coverage.iso3166-alpha2IN
cg.coverage.regionSouthern Asia
cg.coverage.regionAsia
cg.creator.identifierLiangzhi You: 0000-0001-7930-8814
cg.identifier.doihttps://doi.org/10.1111/gcb.14302en
cg.identifier.projectIFPRI - Environment and Production Technology Division
cg.identifier.publicationRankA plus
cg.identifier.wlethemeVariability, Risks and Competing Uses
cg.isijournalISI Journalen
cg.issn1354-1013en
cg.issue9en
cg.journalGlobal Change Biologyen
cg.reviewStatusPeer Reviewen
cg.river.basinGANGESen
cg.subject.wleAGRICULTURAL PRODUCTIONen
cg.volume24en
dc.contributor.authorSong, Lianen
dc.contributor.authorGuanter, Luisen
dc.contributor.authorGuan, Kaiyuen
dc.contributor.authorYou, Liangzhien
dc.contributor.authorHuete, Alfredoen
dc.contributor.authorJu, Weiminen
dc.contributor.authorZhang, Yongguangen
dc.date.accessioned2018-12-03T10:02:43Zen
dc.date.available2018-12-03T10:02:43Zen
dc.identifier.urihttps://hdl.handle.net/10568/98400
dc.titleSatellite sun‐induced chlorophyll fluorescence detects early response of winter wheat to heat stress in the Indian Indo‐Gangetic Plainsen
dcterms.abstractExtremely high temperatures represent one of the most severe abiotic stresses limiting crop productivity. However, understanding crop responses to heat stress is still limited considering the increases in both the frequency and severity of heat wave events under climate change. This limited understanding is partly due to the lack of studies or tools for the timely and accurate monitoring of crop responses to extreme heat over broad spatial scales. In this work, we use novel spaceborne data of sun‐induced chlorophyll fluorescence (SIF), which is a new proxy for photosynthetic activity, along with traditional vegetation indices (Normalized Difference Vegetation Index NDVI and Enhanced Vegetation Index EVI) to investigate the impacts of heat stress on winter wheat in northwestern India, one of the world's major wheat production areas. In 2010, an abrupt rise in temperature that began in March adversely affected the productivity of wheat and caused yield losses of 6% compared to previous year. The yield predicted by satellite observations of SIF decreased by approximately 13.9%, compared to the 1.2% and 0.4% changes in NDVI and EVI, respectively. During early stage of this heat wave event in early March 2010, the SIF observations showed a significant reduction and earlier response, while NDVI and EVI showed no changes and could not capture the heat stress until late March. The spatial patterns of SIF anomalies closely tracked the temporal evolution of the heat stress over the study area. Furthermore, our results show that SIF can provide large‐scale, physiology‐related wheat stress response as indicated by the larger reduction in fluorescence yield (SIFyield) than fraction of photosynthetically active radiation during the grain‐filling phase, which may have eventually led to the reduction in wheat yield in 2010. This study implies that satellite observations of SIF have great potential to detect heat stress conditions in wheat in a timely manner and assess their impacts on wheat yields at large scales.en
dcterms.accessRightsLimited Access
dcterms.available2018-06-22
dcterms.bibliographicCitationSong, Lian; Guanter, Luis; Guan, Kaiyu; You, Liangzhi; Huete, Alfredo; Ju, Weimin; Zhang, Yongguang. 2018. Satellite sun‐induced chlorophyll fluorescence detects early response of winter wheat to heat stress in the Indian Indo‐Gangetic Plains. Global Change Biology. 24(9):4023-4037. https://doi.org/10.1111/gcb.14302en
dcterms.extentp. 4023-4037en
dcterms.issued2018-09
dcterms.languageen
dcterms.licenseCopyrighted; Non-commercial use only
dcterms.publisherWileyen
dcterms.replaceshttps://ebrary.ifpri.org/digital/collection/p15738coll5/id/6241en
dcterms.subjectwheaten
dcterms.subjectheaten
dcterms.subjectcrop productionen
dcterms.subjectspatial dataen
dcterms.subjectsatellite observationen
dcterms.subjectwinter wheaten
dcterms.subjectagricultural researchen
dcterms.subjectcrop yielden
dcterms.subjectheat stressen
dcterms.subjectextreme weather eventsen
dcterms.subjectchlorophyllsen
dcterms.subjectclimate changeen
dcterms.typeJournal Article

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