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This is Scientific American 60-Second Science. I'm Steve Mirsky.
这是科学美国人60秒科学。我是Steve Mirsky。
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"Noise can prevent an animal from hearing other important sounds."
“噪音可以防止动物听到其他重要声音。”
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Rachel Buxton, a conservation biologist at Colorado State University.
Rachel Buxton，科罗拉多州立大学的保护生物学家。
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Buxton and colleagues wanted to see, or rather hear, whether sounds made by human activity-called anthropogenic sound, think airplanes, highway traffic, heavy machinery-were significant in protected areas around the country.
巴克斯顿及其同事希望看到，或者更确切地说，听到人类活动所产生的声音 - 人为声音，想想飞机，公路交通，重型机械 - 是否在全国各地的保护区都很重要。
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"Park Service engineers on our team used over a million hours of acoustic measurements taken from 492 sites around the contiguous United States.
“我们团队的公园服务工程师使用了从美国毗邻的492个站点进行的超过一百万小时的声学测量。
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And they built a sound model...so to get at an idea of noise pollution, we used two thresholds: where anthropogenic noise raises sound levels three and 10 decibels above natural."
他们建立了一个声音模型...所以为了弄清楚噪音污染的概念，我们使用了两个门槛：人为噪音使声音水平比自然高出3和10分贝。“
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Which translates to a doubling and 10-times increase in sound levels.
这意味着音量增加了一倍，增加了10倍。
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Buxton and her team determined that humans were responsible for doubling the sound in 63 percent of protected areas.
巴克斯顿和她的团队确定人类有责任将63％的保护区内的声音加倍。
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And we raise the natural sound levels by 10 times in 21 percent of such landscapes.
我们在21％的景观中将自然声级提高了10倍。
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"These levels are known to impact both the human experience in national parks and have a range of repercussions for wildlife...
“众所周知，这些水平会影响国家公园的人类体验，并对野生动物产生一系列影响......
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so animals use sounds for many essential life functions, such as predator avoidance, navigation, finding food, mate attraction and maintenance of social groups.
因此，动物将声音用于许多基本的生命功能，例如捕食者避免，航行，寻找食物，交配吸引力和维持社会群体。
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So not being able to hear these sounds has serious consequences."
因此，无法听到这些声音会产生严重后果。“
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The study is in the journal Science, which also provided the audio of Buxton.
该研究发表在“科学”杂志上，该杂志还提供了巴克斯顿的音频。
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"The challenge here is managing noise sources that are coming from outside the protected area...
“这里的挑战是管理来自保护区外的噪声源......
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however, our paper provides some really valuable information and options for managing noise and also enhancing opportunities to enjoy natural quiet."
然而，我们的论文提供了一些非常有价值的信息和选项，用于管理噪音，并增加享受自然安静的机会。“
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Because it's not just the non-human residents of wilderness areas that need some peace and quiet.
因为不只是荒野地区的非人类居民需要一些平静和安静。
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For Scientific American 60-Second Science. I'm Steve Mirsky.
对于科学美国人60秒科学。我是Steve Mirsky.