英语翻译Heavy metals and sulphur have been emitted from the Cu-Ni smelter at Harjavalta since 1945.This article reviews the work that has been published in scientifi c journals after 1975 concerning heavy metal deposition and the effects of pollu

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/09 09:30:35

英语翻译Heavy metals and sulphur have been emitted from the Cu-Ni smelter at Harjavalta since 1945.This article reviews the work that has been published in scientifi c journals after 1975 concerning heavy metal deposition and the effects of pollu
英语翻译
Heavy metals and sulphur have been emitted from the Cu-Ni smelter at Harjavalta since 1945.This article reviews the work that has been published in scientifi c journals after 1975 concerning heavy metal deposition and the effects of pollution on forest ecosystem around Harjavalta.The pollution has had diverse effects on boreal forest ecosystem,e.g.vegetation,nutrient cycle mediated by microbiota and soil animals,herbivorous insects and pathogens,resistance mechanisms of vegetation,and birds.The deposition of heavy metals has increased up to 30 km distance from the smelter.At 8 km distance the eco-system began to approximate an undisturbed ecosystem where only slight changes in
the understorey vegetation were observed.At 4 km distance the species composition of different ecosystem components (vegetation,insects,birds,soil microbiota) had changed and the growth of trees was retarded.At 0.5–1 km distance,where the nutrient cycling was disturbed and only the most resistant organisms were surviving,the ecosystem had ceased to carry out its essential functions.Remediation through liming or mulching with organic matter,of forest soil has had some positive effects on the ecosystem.Keywords copper,forest,ecosystem,Harjavalta,nutrient cycle,remediation,liming,mulchAuthor’s address Vantaa Research Centre,Finnish Forest Research Institute,P.O.Box 18,FIN-01301 Vantaa,Finland E-mail oili.kiikkila@metla.fi Received 20 August 2001 Accepted 14 April 2003

英语翻译Heavy metals and sulphur have been emitted from the Cu-Ni smelter at Harjavalta since 1945.This article reviews the work that has been published in scientifi c journals after 1975 concerning heavy metal deposition and the effects of pollu
从1945年以来在Harjavalta 地区就存在重金属与硫从铜/镍冶炼厂泄露出来.这篇文章回顾了1975年之后在科技期刊上发表的关注重金属沉淀与对Harjavalta 周围地区森林生态系统污染的影响的相关文章.污染已经对北极的森林生态系统产生了各种各样的影响,如:植被,由微生物及土壤动物,食草昆虫和病原体调节的营养圈,植被与鸟类的防御机制.重金属沉淀已经增加到离冶炼厂30公里的距离.在8公里处生态系统开始变成一个近似于无法干扰的生态系统,在下层植被仅可以观察到轻微的变化.在4公里处,不同生态系统组份(植被,昆虫,鸟类,土壤微生物)构成的物种,已经改变,树木的增加很缓慢.在0.5-1公里处,营养圈已经被扰乱,仅留下最具抵御性的机制仍然存在,生态系统已经停止运行其基本功能.通过运用带有机物质的石灰或防护层的矫正,它们对于森林土壤生态系统有正面的影响.
关键词:黄铜,森林,生态系统,Harjavalta,营养圈,矫正,石灰.防护林层,作者地址:Vantaa Research Centre,森林研究学院,

英语翻译AbstractPrevious studies have indicated that an effective control technique for heavy metal emissions from incinerators is to use solid sorbents to capture metals by physical deposition and chemical adsorption.However,the adsorbed heavy m 英语翻译The prevalent tribulations with heavy metals are that they are persistent and they bioaccumulate in the time periods (Anu et al.,2009).So,in addition to posing a threat to various coastal ecosystems like mangroves,seagrasses and corals ar 英语翻译In the present study,Igeo（这是一个指数不用翻） was used to understand the heavy metals concentration in the sediments of different ecosystems of the Andaman islands and the world average concentrations of these elements report 英语翻译Zirconium phosphate (ZrP) has recently been demonstrated as an excellent sorbent for heavy metals due to its high selectivity,high thermal stability,and absolute insolubility in water.However,it cannot be readily adopted in fixed beds or 英语翻译Heavy metals and sulphur have been emitted from the Cu-Ni smelter at Harjavalta since 1945.This article reviews the work that has been published in scientifi c journals after 1975 concerning heavy metal deposition and the effects of pollu 英语翻译Ir metals怎么翻译 英语翻译1.The present study was undertaken to assess the toxicities of Al,Cd,and Cu separately and in combinations,three heavy metals very often coexisting on acid soil,and to identify their interactions in two kinds of barley seedlings differing 英语翻译The role of plastics The unhygienic use and disposal of plastics and its effects on human health has become a matter of concern.Colored plastics are harmful as their pigment contains heavy metals that are highly toxic.Some of the harmful You have to confirm that in this bag is free of formaldehyde and its azofree - You have to confirm that its also free of heavy metals这两句话是什么意思? 谢谢! 英语翻译he was heavy with sleep and wanted to 英语翻译Although the Jordanian air quality standards limit particulatematter in the air space,there is no current limitation on con-centration or mass loading of heavy metals due to particulateemissions.The purpose of this study was to quantify t 英语翻译More specifically,advancing technology is creating competition between new and traditional materials with reference to metals,construction materials,textile products,and in many other areas. 关于Heavy metals in traditional Chinese medicines的外文文献,找不到啊, China rice laced with heavy metals: report,求标题翻译,谢谢~ colloidal heavy metals 金属怎么会有胶状的状态呢 是关于污水杂志的文章中看到的 英语翻译Application of plastic materials on the housings ofcomputer and other electronic devices has been growingin terms of their advantages over metals,such as lightweight,design flexibility,low costs and mass productioncapability.Carbon fibre 英语翻译Magnetic Particle TestingMagnetic particle testing is a non-destructive testing method for detection of imperfections on or just below the surface of ferrous metals.It is a quick and reliable technique for detection and location of eg.sur 英语翻译.metals with a high coefficient of thermal expansion e.g.aluminium and copper,expand and contract more for a given heat input than those with a low expansion coefficient,thus creating difficulties in counteracting distortion