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为防野兽破坏农田 日本7年研制“怪兽”(图)
2017-07-13 09:47:44 中国青年网
据日本《产经新闻》报道,近几年来,日本全国野生动物破坏农作物的情况日渐严重,日本千叶县前不久订购了一批被称为"怪兽狼"的机械野兽,希望能够用它们来驱散闯入农田的大型野生动物。这些"怪兽狼"为日本北海道大学、东京农业大学和一家精密仪器公司耗时7年联合研制,它以在北海道出没的狼为原型,身长约60厘米,高约50厘米,四条腿用铁管制成,嘴巴大张,露出一口尖利的牙齿。通过内置红外线装置来感知有无动物靠近,一旦"发现"大型动物,其眼睛就会发出闪烁的红光,同时还伴有巨大的咆哮声。
网络配图
这种咆哮声最高可达90分贝,它还可以模拟狼叫、枪声、狗叫等数十种能够令动物感到恐惧或不快的声音。该机器采用太阳能供电,使用时只要把它放在经常有野兽出没的农田里即可。研制者称,声、光和外形三种因素的综合作用能够让野生动物很容易记住它,不断变换的声音类型可以让动物难以"适应",这样对周遭环境变化十分敏感的动物就不会"见怪不怪"了。
网络配图
图为日本野生动物破坏农作物造成损失金额及大型野生动物捕获量及种类表。
研究者曾在北海道的5处农地内实地测试,并用摄像头跟踪监控,发现在它"出现"以后的半年里,当地的野熊和鹿等动物再也没有来过。但也有动物学家表示,如果这个机器不能"追赶"目标,那野生动物对它的恐惧迟早会消失,所以还需要继续研发更有效的办法。
据报道,日本的野生动物对农作物的破坏十分严重,2011年到2014年全日本农作物被野兽破坏的损失约2亿日元(100日元约合人民币5.9元),2015年这个数字更是上升到近3亿日元,其中以野猪造成的损失最为严重。
责任编辑:孙鑫鑫 CN066
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