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(单词翻译:双击或拖选)
RYAN HEINSIUS, BYLINE1: Large-scale forest restoration designed to prevent wildfires in northern Arizona is behind schedule. One reason why - there are very few places for low-value branches and small diameter logs to go once they've been cut down but are still on the forest floor. It's known as the biomass bottleneck2. From member station KNAU in Flagstaff, Ryan Heinsius reports.
HEINSIUS: A huge mechanical claw scoops3 up several ponderosa pine logs and feeds them into an industrial chipper. Thousands of wood chunks4 are blasted into a large shipping5 container.
(SOUNDBITE OF WOOD CHIPPER RUNNING)
HEINSIUS: Overseeing what's fondly known as the chip-and-ship project is Jeff Halbrook with Northern Arizona University's Ecological6 Restoration Institute.
JEFF HALBROOK: It goes anywhere from one to four to three...
HEINSIUS: Yeah.
HALBROOK: Up to seven small ones can just kind of - and throw in that little jaws7 there.
HEINSIUS: These trees being fed into the chipper were recently cut from the nearby Coconino National Forest. A crew has been working to pack the shipping containers as tightly as possible, stuffing each with about 40,000 pounds of chipped wood. In about two weeks, nearly 60 containers will arrive at a port in South Korea.
HAN-SUP HAN: They primarily use these wood chips for collection of energy, moving away from the fossil-based energy operation in South Korea.
HEINSIUS: Han-Sup Han teaches forestry8 at Northern Arizona University. He is hopeful the chip-and-ship project could support global efforts to move toward carbon neutrality and, at the same time, bypass the main roadblock to large-scale forest restoration in the region.
HAN: This material is so small. And it has so low value. As far as hauling this material to the market - has been - economically, it's unfeasible. To be able to complete the restoration of operation, you need to move that out of the forest.
HEINSIUS: This debris9 is called biomass. And burning it, at least small chunks like this, releases less carbon than traditional coal. The U.S. Forest Service wants to eventually thin a million acres of ponderosa pines vulnerable to wildfire in Arizona. But the agency can't get there without first clearing all that debris. Rich Van Demark is a forester with the Arizona Department of Forestry and Fire Management.
RICH VAN DEMARK: When you fan an acre, you can't go and do another acre until you finish that load of slash10 or small-diameter material. The bottleneck is essentially11 not having homes for that lower-value, lower-quality wood.
HEINSIUS: Experts say a lack of domestic markets is mostly to blame for the delays. Biomass-produced energy is expensive. And there just aren't many facilities in the U.S. Plus, the material can be sold in Asia for more than double of what it fetches domestically. That's why forest managers looked overseas for a solution.
VAN DEMARK: As these markets develop and these techniques are refined, we're able to do more acres. And we're way behind the eight ball on our ability to manage acres.
HEINSIUS: Chip-and-ship could eventually export half a million tons of biomass each year. Jeff Halbrook, who's showing me the project, and others are even hopeful it could help restart the long-dormant wood-products industry in northern Arizona.
HALBROOK: We would need to get more workers in the forest, more truck drivers to haul the material here. So our workforce12 would need to increase before we could really ramp13 up.
HEINSIUS: Project supervisors14 acknowledge transporting that much material nearly 6,000 miles across the Pacific would come with a substantial carbon footprint. To offset15 that, they'd use hundreds of shipping containers that already return empty to Asia from the U.S. If all the pieces fall into place, chip-and-ship could be key for South Korea to move away from fossil fuels while helping16 make U.S. forests more resilient to wildfire. For NPR News, I'm Ryan Heinsius in Flagstaff.
1 byline | |
n.署名;v.署名 | |
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2 bottleneck | |
n.瓶颈口,交通易阻的狭口;妨生产流程的一环 | |
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3 scoops | |
n.小铲( scoop的名词复数 );小勺;一勺[铲]之量;(抢先刊载、播出的)独家新闻v.抢先报道( scoop的第三人称单数 );(敏捷地)抱起;抢先获得;用铲[勺]等挖(洞等) | |
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4 chunks | |
厚厚的一块( chunk的名词复数 ); (某物)相当大的数量或部分 | |
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5 shipping | |
n.船运(发货,运输,乘船) | |
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6 ecological | |
adj.生态的,生态学的 | |
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7 jaws | |
n.口部;嘴 | |
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8 forestry | |
n.森林学;林业 | |
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9 debris | |
n.瓦砾堆,废墟,碎片 | |
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10 slash | |
vi.大幅度削减;vt.猛砍,尖锐抨击,大幅减少;n.猛砍,斜线,长切口,衣衩 | |
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11 essentially | |
adv.本质上,实质上,基本上 | |
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12 workforce | |
n.劳动大军,劳动力 | |
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13 ramp | |
n.暴怒,斜坡,坡道;vi.作恐吓姿势,暴怒,加速;vt.加速 | |
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14 supervisors | |
n.监督者,管理者( supervisor的名词复数 ) | |
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15 offset | |
n.分支,补偿;v.抵消,补偿 | |
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16 helping | |
n.食物的一份&adj.帮助人的,辅助的 | |
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