Posts Tagged ‘lumber’

BY TIMOTHY A. SCHULER

An ambitious forest restoration project in Ashland, Oregon, aims to reduce the risk that wildfire poses to residents—and their water supply.

This week, LAM is joining more than 250 media outlets for Covering Climate Now, flooding the zone, as it were, with climate coverage in the run-up to the United Nations Climate Action Summit on September 23. Landscape and landscape architecture are deeply implicated in the future of climate progress, or a lack of it. Over the past decade, LAM has dug into climate issues of landscape in numerous dimensions, mapping the big resource picture as well as local attempts to fend off increasingly apparent hazards of global warming—from the procurement of materials to the integrity of the food supply chain. Each day this week we’ll bring you excellent stories from recent years that follow landscape architects acting and thinking about climate change and the landscape.

FROM THE MARCH 2019 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE.

 

Though the warning signs had been present for months, the bad news officially came in March 2018, when forecasters at the Northwest Interagency Coordination Center (NWCC) in Portland, Oregon, released their long-range forecast of the upcoming fire season. Though it varied from state to state, in Oregon, light snowpack and higher-than-average temperatures combined to create a highly combustible landscape. “I’m worried about the 2018 fire season,” John Saltenberger, the fire weather program manager at the NWCC, told a Portland television station.

It was discouraging news for a state that, like California and other western states, has seen a growing number of increasingly intense wildfires in recent years. According to Oregon Department of Forestry statistics, 69 percent of the state’s largest recorded wildfires have occurred in the past 20 years. The largest, 2012’s Long Draw Fire, scorched nearly 560,000 acres of predominantly federal land in the southeastern part of the state. In the geological age known as the Anthropocene, the current epoch might one day be known as the Era of Megafires. A megafire is typically defined as a single wildfire that exceeds 100,000 acres. Such fires are “nearly commonplace now,” says Chris Chambers, who for the past 15 years has served as the forest division chief for the City of Ashland, Oregon. “Whereas 20, 30 years ago, a 100,000-acre fire was unheard of.” (more…)

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BY MEG CALKINS, FASLA

Promising new alternatives to tropical hardwoods come with caveats.

FROM THE APRIL 2017 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE

The past decade has brought an explosion in the use of tropical hardwood decking and furnishings in public, institutional, and commercial landscapes. Whereas wood decking was once largely the purview of residential landscapes, now it can be found in urban settings from the High Line to West 8’s sculptural Wavedecks. Tropical hardwoods are so durable, hard, and decay-resistant that they appear to be the ideal material, yet the impacts of using even hardwoods certified by the Forest Stewardship Council can be substantial and threaten the most critical ecosystems of our planet.

Wood is a renewable construction material if you compare the amount of time a wood member is in use to the amount of time it takes to grow a tree to yield a comparable piece. But that is not always the case. For example, it takes 90 years to grow a Handroanthus heptaphyllus tree to yield ipe lumber for deck boards, but the deck boards will likely not be in use for 90 years even if they are reclaimed, refinished, and reused.

As concern for the health of tropical forests is increasingly recognized in sustainable design thinking, alternatives to tropical hardwoods (more…)

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