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  5. <title>UTas ePrints - Crown-scale evaluation of spectral indices for defoliated and discoloured eucalypts</title>
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  13. <meta content="Barry, K.M." name="eprints.creators_name" />
  14. <meta content="Stone, C" name="eprints.creators_name" />
  15. <meta content="Mohammed, C L" name="eprints.creators_name" />
  16. <meta content="Karen.Barry@utas.edu.au" name="eprints.creators_id" />
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  23. <meta content="Crown-scale evaluation of spectral indices for defoliated and discoloured eucalypts" name="eprints.title" />
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  25. <meta content="300603" name="eprints.subjects" />
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  28. <meta content="Remote sensing for evaluation of canopy health in plantation eucalypts is a realistic option for forest managers in the near future if reliable and robust methods of spectral analysis can be developed. Pot-grown eucalypts of three species important to the Australian plantation industry were used for crown-scale spectral (400–1000 nm) evaluations of vegetation indices as indicators of common
  29. symptoms of stress. When defoliation treatments (in E. globulus) or exposure to cold and nutrient deprivation (in E. pilularis) resulted in large differences in leaf
  30. cover, the red edge position and slope indices, two normalized difference vegetation indices (NDVIs), modified chlorophyll absorption ratio index 2 (MCARI2) or modified triangular vegetation index 2 (MTVI2) were most strongly correlated to leaf cover. However the NDVIs were significantly affected by soil background in a study with E. globulus. The percentage of red leaves resulting from stress treatment was most strongly correlated with the
  31. anthocyanin reflectance index (ARI) and red-green index (RGI) in both E. grandis and E. pilularis, however the RGI was affected by background type in the E. globulus study while the ARI was not. Exposure to cold and nutrient
  32. deprivation led to marked changes in leaf cover for E. pilularis but not in E. grandis and a much more reduced level of chlorophyll in E. pilularis than is suspected in E. grandis. In E. globulus, defoliation from the upper crown was easier to detect with spectral data than from the lower crown. Results were generally comparable to studies of eucalypt crown condition from native forests." name="eprints.abstract" />
  33. <meta content="2008" name="eprints.date" />
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  35. <meta content="International Journal of Remote Sensing" name="eprints.publication" />
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  38. <meta content="47-69" name="eprints.pagerange" />
  39. <meta content="10.1080/01431160701281056" name="eprints.id_number" />
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  41. <meta content="0143-1161" name="eprints.issn" />
  42. <meta content="http://dx.doi.org/10.1080/01431160701281056" name="eprints.official_url" />
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  269. Crown-scale test of spectral indices for stressed eucalypts 69" name="eprints.referencetext" />
  270. <meta content="Barry, K.M. and Stone, C and Mohammed, C L (2008) Crown-scale evaluation of spectral indices for defoliated and discoloured eucalypts. International Journal of Remote Sensing, 29 (1). pp. 47-69. ISSN 0143-1161" name="eprints.citation" />
  271. <meta content="http://eprints.utas.edu.au/2731/1/Barry_IJRS_2008_published.pdf" name="eprints.document_url" />
  272. <link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" />
  273. <meta content="Crown-scale evaluation of spectral indices for defoliated and discoloured eucalypts" name="DC.title" />
  274. <meta content="Barry, K.M." name="DC.creator" />
  275. <meta content="Stone, C" name="DC.creator" />
  276. <meta content="Mohammed, C L" name="DC.creator" />
  277. <meta content="300603 Pests, Health and Diseases" name="DC.subject" />
  278. <meta content="300601 Nutrition and Physiology" name="DC.subject" />
  279. <meta content="Remote sensing for evaluation of canopy health in plantation eucalypts is a realistic option for forest managers in the near future if reliable and robust methods of spectral analysis can be developed. Pot-grown eucalypts of three species important to the Australian plantation industry were used for crown-scale spectral (400–1000 nm) evaluations of vegetation indices as indicators of common
  280. symptoms of stress. When defoliation treatments (in E. globulus) or exposure to cold and nutrient deprivation (in E. pilularis) resulted in large differences in leaf
  281. cover, the red edge position and slope indices, two normalized difference vegetation indices (NDVIs), modified chlorophyll absorption ratio index 2 (MCARI2) or modified triangular vegetation index 2 (MTVI2) were most strongly correlated to leaf cover. However the NDVIs were significantly affected by soil background in a study with E. globulus. The percentage of red leaves resulting from stress treatment was most strongly correlated with the
  282. anthocyanin reflectance index (ARI) and red-green index (RGI) in both E. grandis and E. pilularis, however the RGI was affected by background type in the E. globulus study while the ARI was not. Exposure to cold and nutrient
  283. deprivation led to marked changes in leaf cover for E. pilularis but not in E. grandis and a much more reduced level of chlorophyll in E. pilularis than is suspected in E. grandis. In E. globulus, defoliation from the upper crown was easier to detect with spectral data than from the lower crown. Results were generally comparable to studies of eucalypt crown condition from native forests." name="DC.description" />
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  395. <h1 class="ep_tm_pagetitle">Crown-scale evaluation of spectral indices for defoliated and discoloured eucalypts</h1>
  396. <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Barry, K.M.</span> and <span class="person_name">Stone, C</span> and <span class="person_name">Mohammed, C L</span> (2008) <xhtml:em>Crown-scale evaluation of spectral indices for defoliated and discoloured eucalypts.</xhtml:em> International Journal of Remote Sensing, 29 (1). pp. 47-69. ISSN 0143-1161</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2731/1/Barry_IJRS_2008_published.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2731/1/Barry_IJRS_2008_published.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />497Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="3604" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1080/01431160701281056">http://dx.doi.org/10.1080/01431160701281056</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Remote sensing for evaluation of canopy health in plantation eucalypts is a realistic option for forest managers in the near future if reliable and robust methods of spectral analysis can be developed. Pot-grown eucalypts of three species important to the Australian plantation industry were used for crown-scale spectral (400–1000 nm) evaluations of vegetation indices as indicators of common&#13;
  397. symptoms of stress. When defoliation treatments (in E. globulus) or exposure to cold and nutrient deprivation (in E. pilularis) resulted in large differences in leaf&#13;
  398. cover, the red edge position and slope indices, two normalized difference vegetation indices (NDVIs), modified chlorophyll absorption ratio index 2 (MCARI2) or modified triangular vegetation index 2 (MTVI2) were most strongly correlated to leaf cover. However the NDVIs were significantly affected by soil background in a study with E. globulus. The percentage of red leaves resulting from stress treatment was most strongly correlated with the&#13;
  399. anthocyanin reflectance index (ARI) and red-green index (RGI) in both E. grandis and E. pilularis, however the RGI was affected by background type in the E. globulus study while the ARI was not. Exposure to cold and nutrient&#13;
  400. deprivation led to marked changes in leaf cover for E. pilularis but not in E. grandis and a much more reduced level of chlorophyll in E. pilularis than is suspected in E. grandis. In E. globulus, defoliation from the upper crown was easier to detect with spectral data than from the lower crown. Results were generally comparable to studies of eucalypt crown condition from native forests.</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/300603.html">300000 Agricultural, Veterinary and Environmental Sciences &gt; 300600 Forestry Sciences &gt; 300603 Pests, Health and Diseases</a><br /><a href="http://eprints.utas.edu.au/view/subjects/300601.html">300000 Agricultural, Veterinary and Environmental Sciences &gt; 300600 Forestry Sciences &gt; 300601 Nutrition and Physiology</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2731</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Karen Barry</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">17 Dec 2007 15:47</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">01 Feb 2008 15:04</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2731;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=2731">item control page</a></p>
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