NDVI variation and its relation to climate in Canadian ecozones

Parks Canada began the Northern Satellite Monitoring Program in 1997, with the objective of tracking large‐scale vegetation variation in Canadian ecosystems and helping land managers to develop appropriate management practices in response to climate change. Under this program, a sequence of 10‐day c...

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Published in:Canadian Geographies / Géographies canadiennes
Main Authors: He, Yuhong, Guo, Xulin, Dixon, Paul, Wilmshurst, John F.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2012
Subjects:
Online Access:http://dx.doi.org/10.1111/j.1541-0064.2012.00441.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1541-0064.2012.00441.x
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spelling crwiley:10.1111/j.1541-0064.2012.00441.x 2024-09-15T18:02:28+00:00 NDVI variation and its relation to climate in Canadian ecozones He, Yuhong Guo, Xulin Dixon, Paul Wilmshurst, John F. 2012 http://dx.doi.org/10.1111/j.1541-0064.2012.00441.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1541-0064.2012.00441.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1541-0064.2012.00441.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Canadian Geographies / Géographies canadiennes volume 56, issue 4, page 492-507 ISSN 0008-3658 1541-0064 journal-article 2012 crwiley https://doi.org/10.1111/j.1541-0064.2012.00441.x 2024-08-30T04:10:22Z Parks Canada began the Northern Satellite Monitoring Program in 1997, with the objective of tracking large‐scale vegetation variation in Canadian ecosystems and helping land managers to develop appropriate management practices in response to climate change. Under this program, a sequence of 10‐day composite Advanced Very High Resolution Radiometer (AVHRR)‐derived Normalized Difference Vegetation Index (NDVI) data from 1985 to 2007 was examined to study seasonal and inter‐annual relationships between vegetation and climate data over Canadian ecosystems using statistical and wavelet analysis. Statistical analysis showed that temperature was the principal driver for seasonal variability in greenness, explaining more than 70 percent of seasonal variation in vegetation for most Canadian ecozones. In comparison with temperature, the relationships between NDVI and precipitation were weaker but still significant. Maximum annual NDVI showed increasing trends in Canadian ecozones during the study period, although increasing rates were spatially heterogeneous. Wavelet analysis confirmed that inter‐annual variation in NDVI was different at two ecozones in Canada. NDVI variation in the Northern Arctic was significant at scales of 3–4 years from 1997 to 2001, which was associated with temperature and precipitation variation. Comparatively, NDVI variation in the Boreal Shield was significant at scales of 5–8 years from 1991 to 1999, but did not correspond with climate variation . Article in Journal/Newspaper Climate change Wiley Online Library Canadian Geographies / Géographies canadiennes 56 4 492 507
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description Parks Canada began the Northern Satellite Monitoring Program in 1997, with the objective of tracking large‐scale vegetation variation in Canadian ecosystems and helping land managers to develop appropriate management practices in response to climate change. Under this program, a sequence of 10‐day composite Advanced Very High Resolution Radiometer (AVHRR)‐derived Normalized Difference Vegetation Index (NDVI) data from 1985 to 2007 was examined to study seasonal and inter‐annual relationships between vegetation and climate data over Canadian ecosystems using statistical and wavelet analysis. Statistical analysis showed that temperature was the principal driver for seasonal variability in greenness, explaining more than 70 percent of seasonal variation in vegetation for most Canadian ecozones. In comparison with temperature, the relationships between NDVI and precipitation were weaker but still significant. Maximum annual NDVI showed increasing trends in Canadian ecozones during the study period, although increasing rates were spatially heterogeneous. Wavelet analysis confirmed that inter‐annual variation in NDVI was different at two ecozones in Canada. NDVI variation in the Northern Arctic was significant at scales of 3–4 years from 1997 to 2001, which was associated with temperature and precipitation variation. Comparatively, NDVI variation in the Boreal Shield was significant at scales of 5–8 years from 1991 to 1999, but did not correspond with climate variation .
format Article in Journal/Newspaper
author He, Yuhong
Guo, Xulin
Dixon, Paul
Wilmshurst, John F.
spellingShingle He, Yuhong
Guo, Xulin
Dixon, Paul
Wilmshurst, John F.
NDVI variation and its relation to climate in Canadian ecozones
author_facet He, Yuhong
Guo, Xulin
Dixon, Paul
Wilmshurst, John F.
author_sort He, Yuhong
title NDVI variation and its relation to climate in Canadian ecozones
title_short NDVI variation and its relation to climate in Canadian ecozones
title_full NDVI variation and its relation to climate in Canadian ecozones
title_fullStr NDVI variation and its relation to climate in Canadian ecozones
title_full_unstemmed NDVI variation and its relation to climate in Canadian ecozones
title_sort ndvi variation and its relation to climate in canadian ecozones
publisher Wiley
publishDate 2012
url http://dx.doi.org/10.1111/j.1541-0064.2012.00441.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1541-0064.2012.00441.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1541-0064.2012.00441.x
genre Climate change
genre_facet Climate change
op_source Canadian Geographies / Géographies canadiennes
volume 56, issue 4, page 492-507
ISSN 0008-3658 1541-0064
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1111/j.1541-0064.2012.00441.x
container_title Canadian Geographies / Géographies canadiennes
container_volume 56
container_issue 4
container_start_page 492
op_container_end_page 507
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