FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2007146840> ?p ?o ?g. }

• W2007146840 endingPage "50" @default.
• W2007146840 startingPage "38" @default.
• W2007146840 abstract "This work advances the evaluation and interpretation of the Photochemical Reflectance Index (PRI) as an indicator of water stress, over a range of canopy structures and pigment content levels. Very high resolution (VHR) narrow-band multispectral (10 cm) and thermal (20 cm) imagery was acquired diurnally, in four airborne campaigns conducted over an experimental vineyard site undergoing three different irrigation treatments. Field measurements of leaf stomatal conductance (Gs) and leaf water potential (Ψleaf) were acquired concurrently with the airborne campaigns and compared against the Crop Water Stress Index (CWSI), a widely accepted, thermal-based indicator of water stress, and against narrow-band multispectral indices calculated from pure-vegetation pixels. The study proposes a new formulation, a normalized PRI (PRInorm), in which the standard PRI index is normalized by an index that is sensitive to canopy structure (Renormalized Difference Vegetation Index, RDVI) and by a red edge index that is sensitive to chlorophyll content (R700/R670). The hypothesis investigated is that the new index, calculated as PRInorm = PRI/[RDVI · R700/R670], not only detects xanthophyll pigment changes as a function of water stress, but also normalizes for the chlorophyll content level and canopy leaf area reduction induced by stress. Results demonstrated that when comparing PRInorm against stomatal conductance (r2 = 0.79; p < 0.001) and leaf water potential (r2 = 0.77; p < 0.001) measured at midday, the new index performed better than the standard PRI (r2 = 0.52 and 0.49, respectively). Further, when using the four flights conducted during the diurnal experiment, the relationships with stomatal conductance also showed the superior performance of PRInorm (r2 = 0.68) as opposed to PRI (r2 = 0.4). The proposed normalized PRI was highly related (r2 = 0.75; p < 0.001) to the thermal indicator of water stress, CWSI, which was used here as a benchmark. In comparison, the standard PRI index was found to be significantly related to CWSI (p < 0.001), although the relationship was weaker (r2 = 0.58) than that obtained for PRInorm. In summary, this study demonstrates that PRInorm isolated better than PRI the physiological changes against a changing background of altered pigments and structure, tracking more precisely the diurnal dynamics of the stomatal aperture. Simulations conducted, using leaf and canopy radiative transfer models to elucidate these results, showed that PRInorm is more linearly related to canopy pigment content than the standard PRI, and was more capable of differentiating between stress levels, providing better insight into the results of this diurnal study." @default.
• W2007146840 created "2016-06-24" @default.
• W2007146840 creator A5027917176 @default.
• W2007146840 creator A5033939967 @default.
• W2007146840 creator A5042505362 @default.
• W2007146840 creator A5066318573 @default.
• W2007146840 creator A5070012917 @default.
• W2007146840 creator A5073169666 @default.
• W2007146840 creator A5088613599 @default.
• W2007146840 date "2013-11-01" @default.
• W2007146840 modified "2023-10-14" @default.
• W2007146840 title "A PRI-based water stress index combining structural and chlorophyll effects: Assessment using diurnal narrow-band airborne imagery and the CWSI thermal index" @default.
• W2007146840 cites W1964697047 @default.
• W2007146840 cites W1978626717 @default.
• W2007146840 cites W1985504572 @default.
• W2007146840 cites W1989844834 @default.
• W2007146840 cites W1998767864 @default.
• W2007146840 cites W2002182265 @default.
• W2007146840 cites W2006383267 @default.
• W2007146840 cites W2012686349 @default.
• W2007146840 cites W2017014841 @default.
• W2007146840 cites W2018454632 @default.
• W2007146840 cites W2019012731 @default.
• W2007146840 cites W2019088823 @default.
• W2007146840 cites W2019819424 @default.
• W2007146840 cites W2025967407 @default.
• W2007146840 cites W2030233869 @default.
• W2007146840 cites W2038206529 @default.
• W2007146840 cites W2048690294 @default.
• W2007146840 cites W2058486620 @default.
• W2007146840 cites W2070472168 @default.
• W2007146840 cites W2071525319 @default.
• W2007146840 cites W2077724519 @default.
• W2007146840 cites W2086285672 @default.
• W2007146840 cites W2087325533 @default.
• W2007146840 cites W2097615691 @default.
• W2007146840 cites W2097911224 @default.
• W2007146840 cites W2111443984 @default.
• W2007146840 cites W2111483712 @default.
• W2007146840 cites W2118873607 @default.
• W2007146840 cites W2124274454 @default.
• W2007146840 cites W2129575841 @default.
• W2007146840 cites W2133125644 @default.
• W2007146840 cites W2138484303 @default.
• W2007146840 cites W2142087338 @default.
• W2007146840 cites W2143392008 @default.
• W2007146840 cites W2144260204 @default.
• W2007146840 cites W2145979991 @default.
• W2007146840 cites W2147341427 @default.
• W2007146840 cites W2153958436 @default.
• W2007146840 cites W2154083639 @default.
• W2007146840 cites W2154261987 @default.
• W2007146840 cites W2157905269 @default.
• W2007146840 cites W2162452804 @default.
• W2007146840 cites W2163004831 @default.
• W2007146840 cites W2163410149 @default.
• W2007146840 cites W2164995320 @default.
• W2007146840 cites W2166174464 @default.
• W2007146840 cites W2168897235 @default.
• W2007146840 cites W2170172513 @default.
• W2007146840 cites W2171330228 @default.
• W2007146840 cites W2187076425 @default.
• W2007146840 cites W2221225501 @default.
• W2007146840 cites W2318376325 @default.
• W2007146840 cites W2327096636 @default.
• W2007146840 doi "https://doi.org/10.1016/j.rse.2013.07.024" @default.
• W2007146840 hasPublicationYear "2013" @default.
• W2007146840 type Work @default.
• W2007146840 sameAs 2007146840 @default.
• W2007146840 citedByCount "226" @default.
• W2007146840 countsByYear W20071468402014 @default.
• W2007146840 countsByYear W20071468402015 @default.
• W2007146840 countsByYear W20071468402016 @default.
• W2007146840 countsByYear W20071468402017 @default.
• W2007146840 countsByYear W20071468402018 @default.
• W2007146840 countsByYear W20071468402019 @default.
• W2007146840 countsByYear W20071468402020 @default.
• W2007146840 countsByYear W20071468402021 @default.
• W2007146840 countsByYear W20071468402022 @default.
• W2007146840 countsByYear W20071468402023 @default.
• W2007146840 crossrefType "journal-article" @default.
• W2007146840 hasAuthorship W2007146840A5027917176 @default.
• W2007146840 hasAuthorship W2007146840A5033939967 @default.
• W2007146840 hasAuthorship W2007146840A5042505362 @default.
• W2007146840 hasAuthorship W2007146840A5066318573 @default.
• W2007146840 hasAuthorship W2007146840A5070012917 @default.
• W2007146840 hasAuthorship W2007146840A5073169666 @default.
• W2007146840 hasAuthorship W2007146840A5088613599 @default.
• W2007146840 hasConcept C101000010 @default.
• W2007146840 hasConcept C127313418 @default.
• W2007146840 hasConcept C144027150 @default.
• W2007146840 hasConcept C173163844 @default.
• W2007146840 hasConcept C183688256 @default.
• W2007146840 hasConcept C185592680 @default.
• W2007146840 hasConcept C24630173 @default.
• W2007146840 hasConcept C2776373379 @default.
• W2007146840 hasConcept C2776388979 @default.
• W2007146840 hasConcept C2777476368 @default.

• next