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Can changes in management regimes in BC mitigate the reductions in timber harvests caused by beetle
Timber harvests in BC plunged by over 40% between 2005 and 2009, but have since recovered somewhat. As a consequence of the infestation of the pine beetle, long-term log supply is estimated to be about 20% below historical levels.
Since the bottom in 2009, harvests have gone up thanks to a substantial increase in exports of logs and lumber China, reports the Wood Resource Quarterly. In 2011, harvested volumes reached 70 million m3 or close the average annual harvest before the forests in the Interior of the province were hit by the mountain pine beetle infestation.
The beetle has infected just over 18 million hectares of forests and an estimated 710 million m3 of pine trees (53 percent of all pine volume in the province) are dead or dying. Over the next 3-5 years, it is possible for harvest levels to increase in the Interior of the province because of the availability of beetled-killed trees that need to be utilized before the quality has deteriorated to the point when it can be used only for making pulp or for energy generation, including the manufacturing of wood pellets. Long-term, harvest levels are likely to be approximately 20 percent below historical levels.
In a recent study by the BC government, it was noted that the Annual Allowable Cut (AAC) in four Timber Supply Areas (TSA) in the Interior of the province could be reduced by almost 40 percent by 2020 as compared to the pre-beetle AAC. However, the report also discusses opportunities to mitigate the sharp reduction in available supply by:
A. Investing in harvesting and mill equipment able to harvest small-diameter trees in stands that are currently considered being uneconomical.
B. Intensifying silviculture management and increasing stand fertilization.
C. Harvesting in areas currently managed for non-timber values such as biodiversity and wildlife habitat.
The report predicts that by utilizing smaller trees, investing in intensive forest management and harvesting stands managed for non-timber values, future “mitigated-
Global pulpwood and timber market reporting is included in the 52-page quarterly publication Wood Resource Quarterly (WRQ). The report, established in 1988 and with subscribers in over 25 countries, tracks sawlog, pulpwood, lumber and pellet prices and market developments in most key regions around the world. To subscribe to the WRQ, please go to www.woodprices.com