Inland rainforest Totally Explained

Everything about The Inland Rainforest totally explained

The inland rainforest of North Central British Columbia, a temperate rainforest, is one of the most diverse, ancient ecosystems on the planet. The inland rainforest is part of the interior cedar hemlock (ICH) zone in the Rocky Mountain Trench, and one of the richest parts of this wet belt lies 110 kilometres (70 miles) east of the city of Prince George and nearly a thousand kilometres (600 miles) east of the coastal rainforests. The oldest and most diverse parts of the forest are typically found on northeasterly aspect wet toe slopes, with Western Redcedar (Thuja plicata) trees over 1,000 years old and undisturbed forest stands much older than that. Some of these toe slope benches were cleared in the 1960s to develop the Yellowhead Highway, with the added result that most of the remainder became easily accessible to industrial logging and recreation, and more recently to research and interpretation. As a consequence there are only a handful of the best sites left undisturbed in 2008. As well, the inexorable northward movement of climatic zones means that the Inland Rainforest east of Prince George may be the last refuge on the planet within half a century. With the establishment of the new University of Northern British Columbia (UNBC) in Prince George the 1990s, research began to highlight the significance of the ICH zone east of the city. In the 1990s, an environmental group, Save the Cedar League was formed. The arrival of a defoliating insect outbreak, the Hemlock Looper, Lambdina fiscellaria fiscellaria, resulted in increased salvage logging of old cedar stands along Yellowhead Highway. This was reduced by the province’s chief forester in the early 2000s as the appreciation of non-timber values of the zone began to be realized and as the Mountain Pine Beetle catastrophe spread across the Interior Plateau to the west and large scale salvage logging moved in that direction. As the Mountain Pine Beetle wave passes, attention is returning to the mountain wet zones. Some of this came to a head in 2006 with the development of an old growth forest trail by the nearby small community of Dome Creek in the richest site yet found, a place that was also scheduled to be logged. The resulting socio-economic and ecological issues were investigated in a documentary film, Block 486.

Climate change effects

The Interior Cedar Hemlock (ICH) zone is of particular significance with respect to climate change. Climatic warming projections suggest that by mid century or soon afterwards, this location may be at the southerly extent of the ICH. (Ref. Northern Hydrometeorology Environmental Science Program, UNBC; Columbia Mountains Institute of Applied Ecology - Climate Change). The ICH zone will also have spread throughout much of the Prince George area and farther north. The Rocky Mountain Trench east of Prince George therefore offers the last best chance to preserve some of the globally rare 'Tier-1' ICH sites.

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