噪声污染 演讲稿_噪音污染演讲稿
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We know the sounds of cities are loud enough to cause great harm to people's hearing.And all over the world the situation is getting worse and worse all the time since the noise increases with the population.噪声的定义
Noise pollution is displeasing human-,animal-or machine-created sound that disrupts the activity or balance of human or animal life.The word noise comes from the Latin word nausea meaning seasickne.噪声污染的原因
With the development of machines, noise has also increased greatly in the 20th century.We live surrounded by loud planes, trucks and electric tools.TV sets and radios add up to 90 or 100 decibels, a certain unit used to measure the loudne of sound.A normal dialogue reaches 55 decibels;a plane goes to 100, and an ordinary train, reaching the station, can be twice as loud as the loudest plane.Disco music reaches about 118.At decibels the ear stops hearing sound, and pain starts.噪声对人的影响
Noise pollution can cause just as many damaging effects on people's health as other forms of pollution.Exposure to exceive noise can cause hearing lo, stre, lack of sleep, irritability, indigestion, heartburn, high blood preure and ulcers.噪声对植物的影响
Plants don't have ears, right? At least not the kind we hear things with, which is why researchers haven't given much thought to the effect of noise and noise pollution on plants.But all that could be about to change.In northwestern New Mexico's Rattlesnake Canyon, gnarled juniper trees and piñon pines dominate a landscape of high mesas and rough sandstone cliffs.Tucked in among the trees are thousands of natural gas wells, about 1/3 of them preurized by ear-splitting compreors.“They run 24 hours a day, 365 days a year, with the exception of periodic maintenance, so they are going all the time.” That's Clinton Francis, of the National Evolutionary Synthesis Center in North Carolina.Since 2005, he's been studying how Rattlesnake Canyon's birds respond to the compreors' non-stop racket.“Black-chinned hummingbirds, for example, tend to prefer and settle in really noisy landscapes, and western scrub jays tend to avoid these noisy areas.” 植物是没有耳朵的，对吗？至少，植物没有那种我们用来听声音的耳朵，这就是为什么研究人员们没有过多的考虑噪音和噪音污染对植物的影响。但是，新的研究发现有可能会改变这些认知。在新墨西哥西北方的响尾蛇峡谷，高台地和粗砂岩峭壁上主要生长着粗糙的桧树和矮松。树林间隐藏着数以千计的天然气井。其中大约有三分之一的天然气井被压缩机加压，发出震耳欲聋的声音。北卡罗来纳州国家发展综合中心的克林顿•弗朗西斯说：“这些压缩机一天24小时运行，一年365天除了定期维护就全年无休。”从2005年开始，他就开始研究响尾蛇峡谷的鸟类是如果应对压缩机永不消停的噪音的。他说：“例如有着黑色下巴的蜂鸟，往往喜欢定居在嘈杂的景观区，而西部的灌丛鸦则会远离这样嘈杂的地方。”
噪声污染的解决方案
How terrible if things go on like this!So we should take some effective ways to stop noise pollution and get a peaceful world back.1.In 1985, the Noise Control Act was enacted;however, the law is too lax and is seldom adequately enforced.Fortunately, the Environmental Protection Administration(EPA)plans to have amendments to the law paed by the end of the year.The revised law would prohibit building renovations and interior decorations at noon, and between 6:00 p.m.and 8:00 a.m.in residential areas.The EPA also plans to ban karaoke singing at home during lunchtime and from 10:00 p.m.to 8:00 a.m.Those who violate the amended law would be fined a maximum NT$30,000.Hopefully the revision to the Act will be paed as scheduled.More importantly, it must be strictly enforced.Authorities responsible for implementing the law, especially environmental protection authorities and the police, must never shirk their duties in enforcing legislation.2.Other steps should be taken to protect people from the damaging effects of environmental noise.Such steps include locating residential buildings as far from noise sources as poible, banning the honking of car horns in certain areas, and planting more trees in front of buildings to absorb noise
