荷兰研究表明无线网络可能危害树木

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文：林·爱德华兹  2010年11月24日
(PhysOrg.com) -- A new study carried out in the Netherlands suggests radiation from Wi-Fi networks may be damaging trees and affecting the growth of other plants near routers.
（physOrg.com）——荷兰一项新的研究表明无线网络的辐射可能正在毁坏树木，并且影响到路由器附近的其他植物的生长。
Scientists from Wageningen University were asked to carry out the study five years ago after local officials in Alphen aan den Rijn noted that ash trees planted near a wireless router were suffering from bleeding bark, cracks, lumps, discolorations, and their leaves were dying. No bacterial or viral infection could be identified in the trees.
五年前，荷兰埃尔芬市的地方官员发现长在无线路由器附近的白蜡树出现了树皮渗液、龟裂，树干肿块、变色，以及树叶枯萎等现象。但是这些树并没有受到细菌或者病毒的感染。于是他们请瓦赫宁根大学的科学家对此展开研究。
The researchers, led by Dr. A.A.M. van Lammeren, exposed small ash trees and other plants to six sources of radiation at frequencies varying from 2412 to 2472 MHz and a capacity of 100 mW EIRP, the range common for Wi-Fi. The plants were placed at distances varying from 50 to 300 cm for a period of more than three months. The results revealed that in trees closest to the Wi-Fi source the upper and lower epidermis (skin) of the leaves developed a metallic luster and began to die off.
在A.A.M. 范·腊美伦博士的领导下，研究人员将一些小白蜡树和其他植物放到六个辐射源附近，这些辐射源的频率从2,412到2,472兆赫不等，等效各向同性辐射功率为100毫瓦。无线网络的频率和辐射功率基本就是这个水平。这些植物被放置到距离这些辐射源50到300厘米远的地方，历时3个月。结果是，离无线宽带辐射源最近的小树，叶子的上下表皮出现了金属光泽，并且开始枯萎。
A survey of trees in urban areas in the Netherlands showed 70 percent of all deciduous trees had similar symptoms, compared to only 10 percent five years ago, while in wooded areas away from urban centers trees were unaffected.
对荷兰城市地区的树木勘察结果显示，70%的落叶乔木都出现了类似的症状，而5年前，只有10%。在远离市中心的林区，树木则没有受到影响。
Reports on the study may inflame concerns in some over locating wireless routers in schools and fears radiation from them may affect humans as well as trees, but the scientists concerned stress the findings are preliminary and no far-reaching conclusions can be made. The researchers say larger scale research is needed over a longer period to confirm the findings. It is unclear whether the experiments ruled out other possible factors such as the presence of more pollution in urban areas than forests. The study also acknowledges that other research carried out elsewhere has shown Wi-Fi radiation has no detrimental effects.
对该研究的报道可能导致一些人对在学校安装无线路由器产生担忧，害怕这些路由器发出的辐射不仅危害树木而且也有可能影响人类。但是，有关科学家强调，他们的发现只是初步的，还不能得出有影响的结论。目前还不清楚这些实验是不是排除了其他可能的因素，例如：市区比林区的污染严重。此项研究也承认，其他国家或地区的研究表明无线网络的辐射不会造成危害。
The study will be the subject of a conference in the Netherlands in February next year.
明年二月荷兰将举行会议专门讨论这项研究。