Relationships between the evaporative stress index and winter wheat and spring barley yieldanomalies in the Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F16%3A00464738" target="_blank" >RIV/86652079:_____/16:00464738 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/62156489:43210/16:43910603

Výsledek na webu

<a href="http://dx.doi.org/10.3354/cr01411" target="_blank" >http://dx.doi.org/10.3354/cr01411</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3354/cr01411" target="_blank" >10.3354/cr01411</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Relationships between the evaporative stress index and winter wheat and spring barley yieldanomalies in the Czech Republic

Popis výsledku v původním jazyce

There is a growing demand for timely, spatially distributed information regardingncrop condition and water use to inform agricultural decision making and yield forecasting efforts.nThermal infrared remote sensing of land-surface temperature has proven valuable for mappingnevapotranspiration (ET) and crop stress from field to global scales using energy balance models.nThis is because canopy temperature is strongly regulated by the transpiration flux, which isnreduced under stress conditions. This study investigates the utility of an evaporative stress indexn(ESI), computed using the thermal-based Atmosphere–Land Exchange Inverse (ALEXI) surfacenenergy balance model, for explaining yield variability over the Czech Republic for the periodn20022014. ESI timeseries, representing standardized anomalies in the actual-to-reference ETnratio and an indicator of vegetation health, are compared with yield data collected for winternwheat and spring barley crops in 32 agricultural districts, comprising a range of climatic conditionsnwithin the Czech Republic. Correlations between ESI and yield anomalies vary with climaticnregion, with strongest correlations identified in the more drought-prone South Moravian districtsnand weaker relationships in the wetter highlands regions. In most regions, correlations withnspring barley yield anomalies exceeded performance for winter wheat. For both crops, correlationsnpeaked during the 1 to 2 mo period prior to the nominal harvest date. These results providenguidance for effective integration of remotely sensed moisture stress indicators within operationalnyield forecasting systems.

Název v anglickém jazyce

Relationships between the evaporative stress index and winter wheat and spring barley yieldanomalies in the Czech Republic

Popis výsledku anglicky

There is a growing demand for timely, spatially distributed information regardingncrop condition and water use to inform agricultural decision making and yield forecasting efforts.nThermal infrared remote sensing of land-surface temperature has proven valuable for mappingnevapotranspiration (ET) and crop stress from field to global scales using energy balance models.nThis is because canopy temperature is strongly regulated by the transpiration flux, which isnreduced under stress conditions. This study investigates the utility of an evaporative stress indexn(ESI), computed using the thermal-based Atmosphere–Land Exchange Inverse (ALEXI) surfacenenergy balance model, for explaining yield variability over the Czech Republic for the periodn20022014. ESI timeseries, representing standardized anomalies in the actual-to-reference ETnratio and an indicator of vegetation health, are compared with yield data collected for winternwheat and spring barley crops in 32 agricultural districts, comprising a range of climatic conditionsnwithin the Czech Republic. Correlations between ESI and yield anomalies vary with climaticnregion, with strongest correlations identified in the more drought-prone South Moravian districtsnand weaker relationships in the wetter highlands regions. In most regions, correlations withnspring barley yield anomalies exceeded performance for winter wheat. For both crops, correlationsnpeaked during the 1 to 2 mo period prior to the nominal harvest date. These results providenguidance for effective integration of remotely sensed moisture stress indicators within operationalnyield forecasting systems.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Climate Research

ISSN

0936-577X

e-ISSN

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Svazek periodika

70

Číslo periodika v rámci svazku

2-3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

16

Strana od-do

215-230

Kód UT WoS článku

000388194400009

EID výsledku v databázi Scopus

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