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    Defusing BC’s big, bad carbon bomb


    David Broadland

    Over the past 20 years, BC forests were so heavily logged that net carbon emissions are now twice as large as Alberta’s oil sands.

     

    AT THE HEIGHT OF LAST SUMMER'S ECONOMIC MELTDOWN in the BC interior’s forest industry, Marty Gibbons, president of United Steelworkers Local 1-417, based in Kamloops, told the Canadian Press: “Something needs to change immediately or these small communities that don’t have other employers are going to wither and die.” Gibbons concluded that “the largest driving factor is the Province’s complex stumpage system that results in high fees.”

    The average stumpage rate in BC—the price the Province charges forestry companies for harvesting a cubic metre of tree on Crown land—was around $23 for both the interior and the coast in 2019 (1). But the average stumpage paid for timber harvested from Crown land by major raw log exporters like TimberWest and Western Forest Products in the Campbell River Natural Resource District was much lower, ranging between $8 and $11 per cubic metre. Smaller companies paid even less—as little as $5 per cubic metre. Yet raw logs for export were selling at an average price of $128 per cubic metre through 2019 (2).

    Raw logs worth $4.146 billion were exported from BC to other countries for processing over the past five years (3). This huge overcut—unnecessary to meet domestic and international demand for BC’s finished wood products—has averaged 6.5 million cubic metres per year over those five years, equal to 41 percent of the total cut on Crown and private land on the coast (4). So claims that high stumpage rates in BC are the problem that needs to be solved seem out of touch with reality.

    But Gibbons is still right: something “needs to change immediately.” The required change, however, might be more than what he’s thinking. The interior’s forest industry has been destabilized by two climate-change-related phenomena—devastating wildfire and explosive mountain pine beetle infestation—that have been amplified by the immense extent of BC’s clearcut logging. Gibbons wants to knock a few bucks off the forest companies’ costs so they can run more shifts at the mills. What’s really needed, though, is a much deeper kind of change, one that would quickly transform BC’s forest industry. To start, we need to end the export of raw logs and shift that same volume to a new class of forest: protected forest-carbon reserves.

    There’s an urgent need to remove carbon from the atmosphere and reduce emissions at the same time. The only way to remove carbon on a large scale and then store it safely for a long time is to not harvest healthy, mature forests of long-lived species.

    The next 10 years need to be full of bold ideas as we look for and find solutions to the climate crisis. Initiatives like the Carbon Tax in Canada are necessary to disincentivize the use of fossil fuels, but planet Earth isn’t going to give us time to tax our emissions into submission. We need some quick shifts that will cut 10 megatonnes with a few strokes of the Premier’s pen. In BC, protecting the forest instead of destroying it is our only realistic option. If we don’t do this, we’ll run the risk that the rest of the world will start counting the emissions we are releasing from our forests and begin to think of us—and our manufactured wood products industry—as the Brazil of the North.

    Perhaps what’s required most at this critical moment is recognition by the BC government that an international market for sequestered forest-carbon is coming soon, and that forest companies need to start switching from destroying publicly-owned forests to protecting them. Not just old-growth forests, but mature second-growth stands of long-lived species, too.

     

    735022386_ForestlossonVancouverIsland2000-2018(yellow).thumb.jpg.517ca882779884e0edbb652a6ee631cf.jpg

    Forest loss (yellow) on Vancouver Island and the south coast mainland between 2000 and 2018 Source: Hansen/UMD/Google/USGS/NASA

     

    Our government leaders don’t seem to be thinking straight yet. Instead, deforestation on the BC coast is accelerating. Over the past six years, the area of coastal Crown land that was clearcut increased 16 percent over the previous six-year period. Our provincial forest’s capacity to serve as a carbon sink has vanished. Its catastrophic collapse is recorded in a 20-year segment of the Province’s annual inventory of provincial greenhouse gas emissions. In 1997, BC forests could sequester the equivalent of 103 megatonnes of CO2 annually. By 2017 that had fallen to 19.6 megatonnes (5). From 2020 on, our forests will be a net source of emissions—even without including those from wildfires. The image above shows—in yellow—the physical area of Vancouver Island, and the adjacent mainland coast, that was clearcut between 2000 and 2018. Vancouver Island has become an ecological war zone. But a different economic role for the forest is emerging, one that doesn’t destroy it.

    That new purpose is highlighted by a gaping hole in Canada’s plan to meet its emissions reduction commitment under the 2015 Paris Agreement. Canada’s 2018 progress report to the UN admits there’s a nearly 100-megatonne gap in the plan to 2030 (and this assumes the rest of the plan will actually work). How will Canada live up to its promise over the next 10 years? The progress report puts it this way: “Potential increases in stored carbon (carbon sequestration) in forests, soils and wetlands will also contribute to reductions which, for a country such as Canada, could also play an important role in achieving the 2030 target.”

    The report offers no other possibility for filling that gap.

    Canada, then, will likely depend on using the carbon sequestration capacity of its forests to meet its Paris Agreement commitments.

    Article 5 of the Paris Agreement encourages all countries to “…promote and cooperate in the conservation and enhancement, as appropriate, of sinks and reservoirs of all greenhouse gases not controlled by the Montreal Protocol, including biomass, forests and oceans as well as other terrestrial, coastal and marine ecosystems.”

    Depending on how Article 6 of the Paris Agreement is eventually detailed (its development was stymied at the Madrid COP), it’s possible that an international market mechanism for forest carbon is coming, and it can’t come soon enough.

    The over-exploitation of BC’s forests has added to an explosion in net carbon emissions, delivered to the atmosphere each year by the forest industry’s endless road building and progressive clearcuts. Below, I’ll show why this now amounts to over 190 megatonnes every year (and possibly much more), a far more powerful carbon bomb than is being dropped by Canada’s oil sands industry (6). It’s long past time for us to understand the inner workings of the bomb and to defuse it.

    There are two separate parts to BC’s bomb, and I will take you through each of these in some detail below.

    First, when a mature or old forest stand is logged, assuming it’s healthy, the living biomass that’s killed and cut up into small pieces begins a premature process of decay, often hundreds of years before that decay would occur naturally.

    Secondly, when that mature or old, healthy stand is clearcut, its potential to sequester carbon in the future is lost and it could then take anywhere from 60 years to several hundred years before a new replacement forest could sequester as much carbon as was being stored in the previous stand.

    Let me take you through the inner workings of each of these parts of BC’s carbon bomb. First, let’s consider the magnitude of the carbon emissions released when wood prematurely decays.

     

    746688124_OkisolloResourcesclearcutaboveHoskynChannel.thumb.jpg.5c4d1ac9a01af8a8512a99f97d7674d9.jpg

    Biomass left behind after clearcut logging on Crown land on Quadra Island (Photo by David Broadland)

     

    WHEN AN AREA OF FOREST IS CLEARCUT, three decay processes are initiated that result in emissions of carbon to the atmosphere.

    First, the removal of the trees allows the sun to warm the forest soil to a higher temperature than was possible when it was shaded by trees. That additional warmth speeds up decay processes and the release of greenhouse gases, a process somewhat akin to the melting of permafrost in the Arctic. Soil scientists tell us that forest soil contains even more carbon than all the trees and other biomass that grow in it. Recent studies have reported that as much as 20 percent of the carbon in the layer of soil at the forest floor is released to the atmosphere after an area of forest has been clearcut. This release is a wild card in our emerging understanding of the impact of clearcut logging on carbon emissions. For now it remains unquantified, but it’s definitely not zero.

    The second decay process begins after an area of forest is clearcut and the unused parts of trees left on the forest floor begin to decay. In his 2019 report Forestry and Carbon in BC (document at end of story), BC forest ecologist Jim Pojar estimated that 40 to 60 percent of the biomass of a forest is left in a clearcut. That includes the branches, stumps, roots, pieces of the stems that shattered when felled, the unutilizable tops of the trees, and unmerchantable trees that are killed in the mayhem of clearcut logging.

    For our purpose, we will use the mid-point of Pojar’s 40 to 60 percent estimate: half of the biomass is removed, and half remains on the forest floor. The Ministry of Forests’ log scaling system tells us what volume of wood is removed from the forest as merchantable logs. We then assume that an equal volume of wood is left in the clearcut.

    In 2018, the total volume of wood removed from BC’s forests, as reported in the ministry’s Harvest Billing System, was 54.1 million cubic metres. As per above, we are using the same number for the volume of wood that was left in clearcuts all over the province. So the total volume of wood in play is 108.2 million cubic metres. Both pools of wood—the wood left behind and the wood trucked away—begin to decay after a relatively short period of time following harvest. Each cubic metre of wood will eventually produce about 0.82 tonnes of CO2-equivalent emissions (7). So the wood left behind will produce 44 megatonnes and the wood trucked away will also produce 44 megatonnes of CO2-equivalent emissions—eventually.

    The average 6.5-million-cubic-metre cut for raw log exports accounts for 11 megatonnes of that 88-megatonne carbon bomb.

    You might have heard that the carbon in the logs that are harvested and turned into finished wood products will be safely stored in those products indefinitely. But the Ministry of Forests’ own research shows that after 28 years, half of the carbon in the wood products is no longer being safely stored; at 100 years, only 33 percent of the wood is still in safe storage (graph below). The rest will have returned to the atmosphere or is headed in that direction.

     

    190186311_CarbonStoredinUseOver100-yearperiod.thumb.jpg.fe9f302fd993cd5f70baa5e38f54c024.jpg

    This BC Ministry of Forests graph shows how the carbon stored in wood products declines over time. After 28 years, half of the carbon stored has been lost to the atmosphere. At 100 years, 33 percent remains.

     

    BC’s Greenhouse Gas Inventory quantifies the magnitude of the currently acknowledged deterioration of wood products. For 2017 it noted that “Emissions from Decomposition of Harvested Wood Products” contributed 42 megatonnes annually to the provincial greenhouse gas inventory, which is close to our estimate of 44 megatonnes for 2018 (8).

    For ethical reasons, we ought to attribute all of those future emissions to the year in which the wood was harvested.

    Note that the period of safe storage of carbon in wood products is much shorter than the expected life of most of the tree species that grow in coastal BC. A Sitka spruce is capable of attaining 700 years of age. Douglas fir commonly reach 600 to 800 years of age, and have been known to survive to 1000 years. Red cedar can reach even greater longevity. The Cheewat Lake Cedar near Clo-oose has been estimated to be as old as 2,500 years.

    The coastal forest’s longevity—compared with BC’s interior forests—arises, in part, because the coast’s wetter climate lowers the incidence of drought and wildfires that could kill the forest. As well, there are no mountain pine beetles in coastal BC.

    By eliminating the export of raw logs and instead protecting an equivalent volume of long-lived coastal stands each year, 11 megatonnes of CO2-equivalent emissions could be avoided. That would be a much more substantial reduction in provincial emissions than, for example, the BC Carbon Tax has produced after 10 years.

     

    1692278724_Undisclosedlocation2approx800-year-oldDouglasfironQuadraIsland.thumb.jpg.2fd2efcf1481439af4bbffa34ee08dcd.jpg

    The author measures the circumference (27 feet) of an apparently healthy 700-800-year-old Douglas fir on Quadra Island. Douglas fir are known to live for as long as 1000 years.

     

    THE SECOND PART OF THE BOMB—the loss of sequestration capacity—is a measure of the net growth, per year, of the carbon stored by our forests. Provincial data shows that sequestration capacity held steady at about 103 megatonnes of CO2-equivalent emissions per year between 1990 and 1999, and then began to decline through to 2017, the last year for which data is available. But the rate of decline suggests that our forests are now a net source of emissions, even without including the emissions released as a result of natural disturbances such as wildfires.

    The impact on climate stability of BC’s forests losing the ability to absorb 103 megatonnes of CO2-equivalent emissions per year is no different than the impact of releasing 103 megatonnes of CO2-equivalent emissions every year. Let me give you just a glimpse of how unbridled logging has reduced sequestration capacity. Consider the impact of logging roads.

    Logging in BC has required the construction of a vast and very expensive network of industrial-duty roads that have gouged out an equally vast area of previously productive forest and covered it over with blasted rock and gravel. The public has paid for these roads through reduced stumpage payments. They’re poor, if not impossible places for trees to grow.

    In BC, logging roads and landings are allowed to occupy up to seven percent of the area of a cutblock. As well, to avoid slash burning, the unmarketable wood left in a clearcut is increasingly consolidated in semi-permanent piles that, like the roads and landings, reduce the space available for a new forest to grow.

    A recent report at The Narwhal by Sarah Cox described a study in Ontario that examined the extent of such forest loss in that province. Cox reported that researchers there found “logging scars created by roads and landings…occupied an average of 14.2 percent of the area logged.” So our province’s seven percent restriction could well be an underestimation of the forest base that’s being lost. But let’s use seven percent and calculate how much forest has been lost.

    Sierra BC’s recent report, Clearcut Carbon (document at end of story), put the total area logged in BC between 2005 and 2017 at 3,597,291 hectares, which included private land on Vancouver Island.

    If seven percent of that area was covered with roads and landings, the area of forest lost over that 13-year period would be 251,810 hectares. That’s larger than Vancouver Island’s largest protected area, Strathcona Park.

     

    1766830168_TypicalmixofclearcutsandroadsonQuadraIsland.thumb.jpg.10736cca3217639c52e587c2cd232433.jpg

    In this randomly selected, typical aerial view of Crown forest on Quadra Island, the permanent, ballasted logging roads occupy 8.2 percent of the area of the recent clearcuts.

     

    Sierra BC chose a 13-year period for its report because it takes at least 13 years after a clearcut has been replanted for the area to shift from being a source of carbon emissions to a carbon sink. The report grimly observed: “For at least 13 years, these areas are ‘sequestration dead zones’: clearcut lands that emit more carbon than they absorb.”

    In the case of roads, though, the forest land they now occupy has become a permanent just-plain-dead zone, and another one the size of Strathcona Park is being created every 13 years.

    While the blame for BC’s forests becoming a net source of carbon emissions has been directed at non-human causes like the mountain pine beetle and wildfires, the forest industry’s production of 251, 810 hectares of just-plain-dead zones and 3.6 million hectares of sequestration dead zones every 13 years is pushing ecological stability to the brink.

    Once upon a time, management of BC’s forests was based on the concept of “sustained yield.” It was a commonly held belief of residents of this province that this meant the annual allowable cut was restricted to no more than the amount of new forest growth each year. Many of us, including myself, have mistakenly believed that approach to managing the public forests was how the Forest Service still operated. This is clearly not the case.

    The Forest Service has turned the resource into an annual carbon bomb that has become one of the largest carbon emitters/carbon-sink killers in Canada. At more than 190 megatonnes a year (88 from premature decay emissions and 103 from loss of the forest-carbon sink), it’s well over twice the size of emissions from Canadian oil sands operations and three times the rest of BC’s emissions. Yet we cut far more than we need for our own use. That’s just plain nuts.

    The most obvious starting point for repairing BC’s broken forest-carbon sink would be to ban the export of raw logs. That would make it possible to put the 6.5 million cubic metres of trees that weren’t harvested into a protected carbon reserve each year until the provincial forest-carbon sink has been rebuilt to at least 1997’s level: 103 megatonnes per year.

     

    YOU MIGHT THINK THAT THE GREATEST CHALLENGE to eliminating raw log exports and putting that uncut volume into protected carbon reserves would be the huge loss in employment that would result. You’d be wrong.

    There were 17,800 people employed in “forestry and logging with support activities” in all of BC in 2018, according to BC Stats (9). This figure doesn’t include BC’s wood products manufacturing jobs, but eliminating log exports wouldn’t affect those jobs since raw log exports create zero manufacturing jobs in BC.

    2018 was a very good year for employment in the forest industry. The total volume cut in BC forests, including on both public and private land, was 54.1 million cubic metres. Of that, 30 percent was cut on the coast and 70 percent in the interior. Based on that split, about 30 percent of the employment in “forestry and logging with support activities” was on the coast, or about 5340 jobs. In 2018, raw log exports were at a five-year low of 5.03 million cubic metres, equivalent to 31 percent of the coastal cut. So eliminating log exports that year would have eliminated about 31 percent of those 5340 coastal logging jobs, or 1650 jobs. It would have also eliminated, or at least greatly delayed, 8.3 megatonnes of emissions.

    To put those 1650 jobs in perspective, they represented less than one-tenth of one percent of BC’s total workforce in 2018. They are amongst the most carbon-emission-intensive jobs on Earth. In the approaching low-carbon economy, employment will need to shift from carbon-emission-intensive to carbon-absorption-intensive. Any job that is part of a low-cost process for removing carbon from the atmosphere is going to be in demand. Allowing trees to grow is currently the lowest-cost process for absorbing carbon from the atmosphere. This is unlikely to change.

    When BC starts to put thousands of hectares of forest land into carbon sequestration reserves each year, optimizing the amount of carbon stored will require scientists, surveyors, mappers, planners, foresters, tree planters, thinners, pruners, salvagers and fire suppressors. It’s likely to include some selection logging. If anything, optimizing the forests’ capacity for sequestration is likely to require more workers than are provided by road building and the mechanized form of clearcutting widely practiced on the coast. Where would the money for all this employment come from?

    The Carbon Tax is slated to rise to $50 per tonne in 2021. If the 5-year-average export cut was ended and the trees left standing, a net reduction in emissions of 11 megatonnes would have an annual value of $550 million. That’s a lot more than necessary to keep 1650-2000 jobs in a transformative BC Forest-Carbon Service. Do the arithmetic yourself.

    David Broadland is the publisher of Focus. He is working with a group of scientists, journalists and citizens to explore the potential for conserving selected BC forests for carbon sequestration, biodiversity conservation and short-distance tourism potential. He welcomes your feedback.

    Forestry and Carbon In BC by Dr. Jim Pojar: Forestry and Carbon in BC Dr. Jim Pojar.pdf

    Clearcut Carbon by Sierra BC: 2019-Clearcut-Carbon-report.pdf

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    Very intellectual and reasoned and scentific. Very encouraging and explicit. Do you believe anything will change in this province under NDP or Liberals? Good luck. Same goes for salmon. Remember 1992 in Nfld? Well, get ready...

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