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Article

A National Assessment of Wetland Status and Trends for Canada’s Forested Ecosystems Using 33 Years of Earth Observation Satellite Data

1
Canadian Forest Service, Pacific Forestry Center, Natural Resources Canada, 506 West Burnside Road, Victoria, BC V8Z 1M5, Canada
2
Department of Forest Resource Management, Forest Sciences Centre, 2424 Main Mall, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
*
Author to whom correspondence should be addressed.
Remote Sens. 2018, 10(10), 1623; https://doi.org/10.3390/rs10101623
Received: 5 September 2018 / Revised: 28 September 2018 / Accepted: 10 October 2018 / Published: 12 October 2018
(This article belongs to the Section Forest Remote Sensing)
Wetlands are important globally for supplying clean water and unique habitat, and for storing vast amounts of carbon and nutrients. The geographic extent and state of wetlands vary over time and represent a dynamic land condition rather than a permanent land cover state. Herein, we combined a time series of land cover maps derived from Landsat data at 30-m resolution to inform on spatial and temporal changes to non-treed and treed wetland extents over Canada’s forested ecosystems (>650 million ha) from 1984 to 2016. Overall, for the period, 1984 to 2016, we found the extent of wetlands (non-treed and treed combined) in Canada’s forested ecosystems to be stable, with some regional variability, often resulting from offsetting decreases and increases within a given ecozone. Notwithstanding difficulties in using optical satellite data for mapping a land condition, by accumulating wetland evidence via earth observations consistently through multiple decades, our results capture the trends in wetland cover over a previously unmapped, national extent at a level of spatial detail and temporal reach suitable for further focused interpretations of wetlands and drivers and projections of wetland dynamics. View Full-Text
Keywords: Landsat; time series; ecosystem dynamics; Canada; boreal; wetland Landsat; time series; ecosystem dynamics; Canada; boreal; wetland
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MDPI and ACS Style

Wulder, M.A.; Li, Z.; Campbell, E.M.; White, J.C.; Hobart, G.; Hermosilla, T.; Coops, N.C. A National Assessment of Wetland Status and Trends for Canada’s Forested Ecosystems Using 33 Years of Earth Observation Satellite Data. Remote Sens. 2018, 10, 1623. https://doi.org/10.3390/rs10101623

AMA Style

Wulder MA, Li Z, Campbell EM, White JC, Hobart G, Hermosilla T, Coops NC. A National Assessment of Wetland Status and Trends for Canada’s Forested Ecosystems Using 33 Years of Earth Observation Satellite Data. Remote Sensing. 2018; 10(10):1623. https://doi.org/10.3390/rs10101623

Chicago/Turabian Style

Wulder, Michael A., Zhan Li, Elizabeth M. Campbell, Joanne C. White, Geordie Hobart, Txomin Hermosilla, and Nicholas C. Coops. 2018. "A National Assessment of Wetland Status and Trends for Canada’s Forested Ecosystems Using 33 Years of Earth Observation Satellite Data" Remote Sensing 10, no. 10: 1623. https://doi.org/10.3390/rs10101623

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