@article{d6608c636012464e8560369d49c5ea60,
title = "Convergence of daily light use efficiency in irrigated and rainfed C3 and C4 crops",
abstract = "The goal of this study is to quantify variability of daily light use efficiency (LUE) based on radiation absorbed by photosynthetically active vegetation (LUEgreen) in C3 and C4 crops. Data contained GPP, fAPAR, total and green leaf area index taken over 16 site years of irrigated and rainfed maize and 8 site years of soybean in 2001–2008 including years with quite strong drought events. LUEgreen in irrigated and rainfed sites were statistically indistinguishable showing low sensitivity to water availability. Seasonal changes of LUEgreen remained remarkably small over a wide range of water supply, leaf area index and weather conditions. The magnitude and composition of incident radiation affected the magnitude of the day-to-day LUEgreen change – increases in incident PAR caused statistically significant decreases of LUEgreen. Convergence of LUEgreen to a narrow range in irrigated and rainfed crops brought important implications for understanding mechanisms of plant response to stress and remote estimation of primary production in crops.",
keywords = "Incident radiation, Light use efficiency, Primary production",
author = "Gitelson, {Anatoly A.} and Arkebauer, {Timothy J.} and Suyker, {Andrew E.}",
note = "Funding Information: This research was supported by NASA NACP grant No. NNX08AI75G and by the U.S. Department of Energy: (a) EPSCoR program, Grant No. DE-FG-02-00ER45827 and (b) Office of Science (BER), Grant No. DE-FG03-00ER62996. We sincerely appreciate the support and the use of facilities and equipment provided by the Center for Advanced Land Management Information Technologies (CALMIT) the School of Natural Resources and the Carbon Sequestration Program at the University of Nebraska-Lincoln. AG greatly acknowledges support by the European Union FP7 Marie Curie International Incoming Fellowship at Technion. We are very thankful to RSE Associate Editor Pablo J. J. Zarco-Tejada and three anonymous reviewers for their very constructive and helpful reviews. Funding Information: This research was supported by NASA NACP grant No. NNX08AI75G and by the U.S. Department of Energy : (a) EPSCoR program, Grant No. DE-FG-02-00ER45827 and (b) Office of Science (BER), Grant No. DE-FG03-00ER62996 . We sincerely appreciate the support and the use of facilities and equipment provided by the Center for Advanced Land Management Information Technologies (CALMIT) the School of Natural Resources and the Carbon Sequestration Program at the University of Nebraska-Lincoln. AG greatly acknowledges support by the European Union FP7 Marie Curie International Incoming Fellowship at Technion . We are very thankful to RSE Associate Editor Pablo J. J. Zarco-Tejada and three anonymous reviewers for their very constructive and helpful reviews. Publisher Copyright: {\textcopyright} 2018 Elsevier Inc.",
year = "2018",
month = nov,
doi = "10.1016/j.rse.2018.08.007",
language = "English (US)",
volume = "217",
pages = "30--37",
journal = "Remote Sensing of Environment",
issn = "0034-4257",
publisher = "Elsevier Inc.",
}