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Assessing biomass and metal contents in riparian vegetation along a pollution gradient using an unmanned aircraft system
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.
Luleå tekniska universitet.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0003-4208-345X
2014 (Engelska)Ingår i: Water, Air and Soil Pollution, ISSN 0049-6979, E-ISSN 1573-2932, Vol. 225, nr 6, artikel-id 1957Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Quantifying plant biomass and related processes such as element allocation is a major challenge at the scale of entire riparian zones. We applied sub-decimetre-resolution (5 cm) remote sensing using an unmanned aircraft system (UAS) in combination with field sampling to quantify riparian vegetation biomass at three locations (320-m river stretches) along a mining-impacted boreal river and estimated the amounts of Cd, Cu, and Zn stored in the dominant species. A species-level vegetation map was derived from visual interpretation of aerial images acquired using the UAS and field sampling to determine species composition and cover. Herbaceous and shrub biomass and metal contents were assessed by combining the vegetation maps with field sampling results. Riparian zone productivity decreased from 9.5 to 5.4 t ha-1 with increasing distance from the source of contamination, and the total amount of vegetation-bound Cd and Zn decreased from 24 to 0.4 and 3,488 to 211 g, respectively. Most Cu was stored at the central location. Biomass and metal contents indicated large variation between species. Salix spp. comprised only 17% of the total dominant-species biomass but contained 95% of all Cd and 65% of all Zn. In contrast, Carex rostrata/vesicaria comprised 64% of the total dominant-species biomass and contained 63% of all Cu and 25% of all Zn. Our study demonstrates the applicability of UAS for monitoring entire riparian zones. The method offers great potential for accurately assessing nutrient and trace element cycling in the riparian zone and for planning potential phytoremediation measures in polluted areas

Ort, förlag, år, upplaga, sidor
2014. Vol. 225, nr 6, artikel-id 1957
Nationell ämneskategori
Geokemi
Forskningsämne
Tillämpad geologi
Identifikatorer
URN: urn:nbn:se:ltu:diva-7844DOI: 10.1007/s11270-014-1957-2ISI: 000338334200004Scopus ID: 2-s2.0-84901372790Lokalt ID: 643ae333-f4f6-4585-b375-fc2014362d3dOAI: oai:DiVA.org:ltu-7844DiVA, id: diva2:980734
Anmärkning

Validerad; 2014; 20140612 (andbra)

Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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Husson, EvaLindgren, FredrikEcke, Frauke

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Husson, EvaLindgren, FredrikEcke, Frauke
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Geovetenskap och miljöteknikLuleå tekniska universitet
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Water, Air and Soil Pollution
Geokemi

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