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Satellite imagery tracks logging of B.C. old-growth forests

Forest Eye also uses government data and time-lapse video to identify incursions into old growth
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Forest Eye, the database of old growth logging developed by STAND.earth, provides alerts on where such logging has taken place, names the timber company, and links to satellite imagery with time-lapse video showing the cut. Map: STAND.earth

The public can now use an online interactive tool to check if logging has happened in any B.C. old-growth forest.

Angeline Robertson, project lead for STAND.earth鈥檚 new site , says the tool allows the public to see exactly where timber companies have logged in areas the provincial government has designated as old growth.

She said Forest Eye was borne out of frustration.

鈥淲hat we were struggling with was trying to get information from the government, asking for maps, asking for updated figures, and getting a lot of shaping of those numbers, (telling us that) everything was just fine, that lots of things are being protected.鈥

In 2020 the B.C. government announced its intention to temporarily defer the cutting of specific areas of old growth until a new province-wide ecosystem-based forest management approach based on the is implemented.

Since then the public and the media have not been able to get basic information about areas that were deferred, including the location, size and status of deferral areas. Occasional rumours would surface about old growth that had been logged, but there has been no clear way of fact-checking these.

Angeline Robertson, senior investigative researcher at the international environmental organization STAND.earth, says the Forest Eye database was designed to provide information about old growth logging that the public has been unable to get from the provincial government. Photo: Submitted
Angeline Robertson, senior investigative researcher at the international environmental organization STAND.earth, says the Forest Eye database was designed to provide information about old growth logging that the public has been unable to get from the provincial government. Photo: Submitted

Forest Eye states that it uses provincial government data and maps, combined with satellite data, remote sensing, and time-lapse video to show where old growth has been logged. The data can be produced two-to-four weeks after the logging is done, Robertson says.

The system observes the overlap between mapped old growth and cutting permits. Then it looks for vegetation loss within that overlap, which indicates logging has taken place. Robertson says the system can distinguish between logging and other disturbances such as wildfire. It also ignores vegetation disturbances that occurred before January 2020.

Indicators like roads and slash piles confirm the presence of logging, and time lapse photography documents the timing and progress of road building and logging.

The tracking system can also identify whether logging roads have been built through old growth, which the government allows even in small old growth stands.

鈥淲e鈥檙e so keen to watch what happens in environments around the world,鈥 says Robertson. 鈥淚n this instance, we see logging occurring here, despite all of this work that鈥檚 been done to justify deferring it. So I also think that there鈥檚 a moment here to say, 鈥業t鈥檚 time to turn the lens on ourselves.鈥欌

She says the satellite surveillance system does not use Google Earth, whose data tends to be out of date, but rather uses information from Planet Labs.

For each incursion of loggers into old growth, the database issues an alert on an interactive map, showing how many hectares of old growth that was cut, the date and location of the cut, and the timber company鈥檚 name.

Users of the site can sign up for updates and alerts that will be sent out whenever new logging is confirmed. The site has confirmed 214 alerts so far, and reports that nearly 2,800 hectares of forest slated for deferrals has been logged.

An added problem, she said, was that in 2021 when the deferrals were announced the deferral did not apply if there was already a timber harvesting permit in place.

The Ministry of Forests did not respond to questions from the Nelson Star about the accuracy of the Forest Eye system or why it has not provided a similar tool for the public.

Providing a similar tool is something the province could easily do, says Robertson.

鈥淎nd they could probably do it way better than us. But they鈥檙e not.鈥

Old growth cedar in the Russell Creek drainage in the Slocan Valley. Photo: Bill Metcalfe
Old growth cedar in the Russell Creek drainage in the Slocan Valley. Photo: Bill Metcalfe

Forest consultant Len Vanderstar of Smithers says he likes the Forest Eye system, even though some of the government information on which it relies may not always be accurate or up to date.

Vanderstar is a retired registered professional forester who worked for 26 years as a biologist for the province.

鈥淚 like the product,鈥 Vanderstar says of Forest Eye. 鈥淔rom our knowledge of the land base, it鈥檚 fairly accurate. You鈥檙e going get anomalies 鈥 but that doesn鈥檛 mean that the end product is bad.鈥

Another B.C. forest consultant says the Forest Eye technology 鈥渓ooks accurate and robust.鈥

Dave Daust, a consultant forester and landscape analyst, said in an email that the tool adds a visual element to the province鈥檚 vegetation data, 鈥渨hich is a critical step in such analyses.鈥

Daust was one of the members of the province鈥檚 Technical Advisory Panel, which recommended in 2021 that the province defer 2.6 million ha of at-risk old growth from logging until such time as the province conducted further planning in conjunction with First Nations, and until it revamped its forest management system to better take ecosystem health into account.

Grand Chief Stewart Phillip, president of the Union of B.C. Indian Chiefs, praised the STAND.earth database in a July 20 statement.

鈥淥ur earth and our trees need more protections because we are losing them at an unacceptable rate due to logging and constant wildfires,鈥 Phillip said. 鈥淭his tracker is just one way that we can hold corporate greed to account, and we applaud STAND.earth for taking a stand.鈥

The Forest Eye site states that so far most of the old growth alerts stem from cutting by major logging companies including Canfor, West Fraser, Interfor and Western Forest Products, as well as pipelines including TransCanada鈥檚 Coastal Gaslink pipeline.

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bill.metcalfe@nelsonstar.com

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Bill Metcalfe

About the Author: Bill Metcalfe

I have lived in Nelson since 1994 and worked as a reporter at the Nelson Star since 2015.
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