http://www.cnr.it/ontology/cnr/individuo/prodotto/ID13266

Responses of the reflectance indices PRI and NDVI to experimental warming and drought in European shrublands along a north-south climatic gradient (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Responses of the reflectance indices PRI and NDVI to experimental warming and drought in European shrublands along a north-south climatic gradient (Articolo in rivista) (literal)

Anno

2010-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.rse.2009.11.003 (literal)

Alternative label

Pille Mänd; Lea Hallik; Josep Peñuelas; Tiit Nilson; Pierpaolo Duce; Bridget A. Emmett; Claus Beier; Marc Estiarte; János Garadnai; Tibor Kalapos; Inger Kappel Schmidt; Edit Kovács-Láng; Patricia Prieto; Albert Tietema; Joke W. Westerveld; Olevi Kull (2010)
Responses of the reflectance indices PRI and NDVI to experimental warming and drought in European shrublands along a north-south climatic gradient
in Remote sensing of environment; Elsevier Science Inc., New York (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Pille Mänd; Lea Hallik; Josep Peñuelas; Tiit Nilson; Pierpaolo Duce; Bridget A. Emmett; Claus Beier; Marc Estiarte; János Garadnai; Tibor Kalapos; Inger Kappel Schmidt; Edit Kovács-Láng; Patricia Prieto; Albert Tietema; Joke W. Westerveld; Olevi Kull (literal)

Pagina inizio

626 (literal)

Pagina fine

636 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://ac.els-cdn.com/S0034425709003289/1-s2.0-S0034425709003289-main.pdf?_tid=cdef00cbf7592dcb07b308dc90a6bd9d&acdnat=1335093097_e3bb21531b4509d8419825b588571041 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

114 (literal)

Rivista

Remote sensing of environment (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

11 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

3 (literal)

Note

Scopu (literal)
ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

- Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, Estonia - Department of Plant Physiology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu, Estonia - Ecophysiology and Global Change Unit CSIC-CEAB-CREAF, CREAF (Center for Ecological Research and Forestry Applications), Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain - Tartu Observatory, Tõravere, Estonia - Institute of Biometeorology, Consiglio Nazionale delle Ricerche, CNR-IBIMET, Sassari, Italy - Centre for Ecology and Hydrology, Environment Centre Wales, Bangor, Gwynedd, United Kingdom - RISØ National Laboratory, Roskilde, Denmark - Ecophysiology and Global Change Unit CSIC-CEAB-CREAF, CREAF (Center for Ecological Research and Forestry Applications), Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain - Institute of Ecology and Botany, Hungarian Academy of Sciences, Vácrátót, Hungary - Department of Plant Taxonomy and Ecology, Institute of Biology, Loránd Eötvös University, Budapest, Hungary - Forest & Landscape Denmark, Copenhagen University, Hørsholm, Denmark - Institute of Ecology and Botany, Hungarian Academy of Sciences, Vácrátót, Hungary - Ecophysiology and Global Change Unit CSIC-CEAB-CREAF, CREAF (Center for Ecological Research and Forestry Applications), Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain - Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, The Netherlands - Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, The Netherlands - Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, Estonia (literal)

Titolo

Responses of the reflectance indices PRI and NDVI to experimental warming and drought in European shrublands along a north-south climatic gradient (literal)

Abstract

The aim of this study was to evaluate the use of ground-based canopy reflectance measurements to detect changes in physiology and structure of vegetation in response to experimental warming and drought treatment at six European shrublands located along a North-South climatic gradient. We measured canopy reflectance, effective green leaf area index (green LAIe) and chlorophyll fluorescence of dominant species. The treatment effects on green LAIe varied among sites. We calculated three reflectance indices: photochemical reflectance index PRI [531 nm: 570 nm], normalized difference vegetation index NDVI680 [780 nm; 680 nm] using red spectral region, and NDVI570 [780 nm: 570 nm] using the same green spectral region as PRI. All three reflectance indices were significantly related to green LAIe and were able to detect changes in shrubland vegetation among treatments. In general warming treatment increased PRI and drought treatment reduced NDVI values. The significant treatment effect on photochemical efficiency of plants detected with PRI could not be detected by fluorescence measurements. However, we found canopy level measured PRI to be very sensitive to soil reflectance properties especially in vegetation areas with low green LAIe. As both soil reflectance and LAI varied between northern and southern sites it is problematic to draw universal conclusions of climate-derived changes in all vegetation types based merely on PRI measurements. We propose that canopy level PRI measurements can be more useful in areas of dense vegetation and dark soils. (literal)

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