change analysis

Field validation exercise: testing the accuracy of a global forest change dataset

(2014-07-24) Global Forest Watch Canada conducted a field validation exercise to test the accuracy of the “forest gain” component of the new global dataset of forest change (High-Resolution Global Maps of 21st-Century Forest Cover Change; see sciencemag.org) for two sites in a forested region of southwestern Alberta, Canada, known regionally as the Eastern Slopes. Our study warrants a close consideration of the dataset's use in the Canadian context.

Menu categories: 

The State of Alberta's Forests - With a Focus on the Eastern Slopes

(2014-06-26) New Global Forest Watch satellite data reveals extensive forest loss in Alberta’s Eastern Slopes during the period 2000-2012. 6.8% of the forests in the Eastern Slopes were lost between 2000 and 2013 due to industrialization. This amount of loss is more than double that of the average throughout Canada’s forests and is also significantly greater than in Alberta’s tar sands region.

Menu categories: 

Atlas of land cover, industrial land uses and industrial-caused land change in the Peace Region of British Columbia

(2012-12-13) Oil and gas development, logging, mines, large dams and other industrial infrastructure are having an alarming impact on natural areas and wildlife habitat in the booming Peace Region of northeastern British Columbia; a new science study released today shows. Global Forest Watch Canada's new report also maps industrial changes over the last 38 years from satellite imagery.

Menu categories: 

Summary of Global Forest Watch Canada's Anthropogenic Change Projects: 2006–2010

(2010-09-13) This report summarizes Global Forest Watch Canada’s anthropogenic change work since 2006. These studies were conducted across Canada and resulted in a series of reports for Québec, Ontario, Saskatchewan/Manitoba, Alberta, British Columbia, Nova Scotia and Northwest Territories. The reports focused on major ecosystem types, such as terrestrial ecozones, watersheds, inland temperate rainforests, Rocky Mountain Foothills, and Greenbelt surrounding Toronto.

Menu categories: 

Recent Anthropogenic Changes within the Forest Landscapes of Nova Scotia

(2009-06-25) A report of Nova Scotia's forest landscapes that reveals the dramatic pace and scale of recent human-caused changes due to industrial activities in recent decades. GFWC examined old and new satellite images for almost the entire area of Nova Scotia and combined what we saw with existing information in order to map the industrial-caused changes, primarily logging, that have occurred throughout much of the province, from approximately 1990-2007. The resulting maps and analyses paint a stark picture of industry's impacts.

Menu categories: 
Subject categories: 

Nova Scotia Change Analysis, 1990-2007

(2009-06-25) Anthropogenic Change analysis was performed in Nova Scotia using Landstat TM imagery between the approximate time periods of 1990 and 2007. Changes were detected using a simple image differencing technique between Band 5 of temporal image pairs at a user specified change threshold. The detected change was converted to vector format and visually analyzed to identify anthropogenic changes and digitize changes not detected by the image differencing process.

Menu categories: 
Subject categories: 

Urban Sprawl and Other Major Land Use Conversions in Ontario's Greenbelt From 1993 to 2007

(2008-07-02) This dataset was developed to determine the extent and location of changes within the Ontario Greenbelt between 1993 and 2007. While the analysis likely underestimates the amount of conversion, a key result of the study was that there was very little conversion or loss of forests and wetlands, but a disproportionately high conversion of high-value agricultural lands to urban/built-up areas.

Menu categories: 

Urban Sprawl and Other Major Land Use Conversions in Ontario's Greenbelt From 1993 to 2007: A Change Analysis Project Using Satellite Imagery

(2008-07-02) The Ontario Greenbelt presents both opportunities and challenges for managing growth and retaining natural areas and key agricultural production lands. This report contributed to a larger project (by the David Suzuki Foundation and the Greenbelt foundation) around analyzing key ecosystem values in Ontario's Greenbelt.

Menu categories: 

Recent Anthropogenic Changes within the Inland Temperate Rainforest of Southeastern British Columbia: Interim Report

(2008-06-02) A results summary for a survey of human disturbances in BC's Inland Temperate Rainforest. The study was undertaken using satellite imagery for the approximate period of 1989 to 2001. This is an interim report as we had planned to perform additional verification of the results.

Menu categories: 
Subject categories: 

Recent Anthropogenic Changes within the Boreal Forests of Ontario and Their Potential Impacts on Woodland Caribou

(2007-03-27) This stage of GFWC's "Where's the Best of What's Left?" project involved identifying all disturbances to Ontario's Boreal that were caused by industry in the 1990s and early 2000s. The potential impacts of these disturbances on woodland caribou habitat were also considered in this analysis.

Menu categories: 

Pages