Spectral reflectance is a reliable water-quality estimator for small, highly turbid wetlands

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F15%3A43888832" target="_blank" >RIV/60076658:12220/15:43888832 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67179843:_____/15:00447706 RIV/25173154:_____/15:N0000006

Výsledek na webu

<a href="http://link.springer.com/article/10.1007/s11273-015-9431-5" target="_blank" >http://link.springer.com/article/10.1007/s11273-015-9431-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11273-015-9431-5" target="_blank" >10.1007/s11273-015-9431-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spectral reflectance is a reliable water-quality estimator for small, highly turbid wetlands

Popis výsledku v původním jazyce

Spectral reflectance from water surfaces was measured in small (0.01-5 km2), turbid, eutrophic fishponds and mesotrophic quarry lakes in the Trvebonv basin (South Bohemia, Czech Republic). A spectral scanner for direct field measurements from water surfaces and a hyperspectral airborne scanner were both used. The quarry lakes and fishponds differed in their spectral signature, which reflected the extent of their eutrophication. Their chlorophyll-a (chl-a) concentrations ranged from 2 to 455 lg/l-1. Various algorithms were tested to best fit the relationships between reflectance patterns and the water-quality parameters used-concentration of chl-a and the total amount of suspended solids. The reflectance ratios at 714 and 650 nm gave the best estimates for chla concentrations, and simple reflectance at near infrared wavelengths, especially at 806 nm, gave the best predictive values for total suspended solid evaluation (r2 = 0.89). Field surface reflectance and airborne sensing measurements were well correlated; however, airborne reflectance data showed higher variability (r2 = 0.93 and 0.86, respectively). The results support the validity of reflectance measurements, both field and airborne, as a rapid tool for evaluating water quality in many turbid and greatly disturbed, small water bodies.

Název v anglickém jazyce

Spectral reflectance is a reliable water-quality estimator for small, highly turbid wetlands

Popis výsledku anglicky

Spectral reflectance from water surfaces was measured in small (0.01-5 km2), turbid, eutrophic fishponds and mesotrophic quarry lakes in the Trvebonv basin (South Bohemia, Czech Republic). A spectral scanner for direct field measurements from water surfaces and a hyperspectral airborne scanner were both used. The quarry lakes and fishponds differed in their spectral signature, which reflected the extent of their eutrophication. Their chlorophyll-a (chl-a) concentrations ranged from 2 to 455 lg/l-1. Various algorithms were tested to best fit the relationships between reflectance patterns and the water-quality parameters used-concentration of chl-a and the total amount of suspended solids. The reflectance ratios at 714 and 650 nm gave the best estimates for chla concentrations, and simple reflectance at near infrared wavelengths, especially at 806 nm, gave the best predictive values for total suspended solid evaluation (r2 = 0.89). Field surface reflectance and airborne sensing measurements were well correlated; however, airborne reflectance data showed higher variability (r2 = 0.93 and 0.86, respectively). The results support the validity of reflectance measurements, both field and airborne, as a rapid tool for evaluating water quality in many turbid and greatly disturbed, small water bodies.

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

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Wetlands Ecology And Management

ISSN

0923-4861

e-ISSN

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Svazek periodika

23

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

933-946

Kód UT WoS článku

000361630800013

EID výsledku v databázi Scopus

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