科學(xué)60秒:小蛀蟲入侵，大錢財(cái)遭殃
來(lái)源：滬江聽(tīng)寫酷
2011-09-23 10:00
Many wooden shipping crates that enter the U.S. contain hungry stowaways: invasive species of insects. Although these pests often ___1___ trees, they also ___2___ a different resource: money.
After dividing up the invaders into three categories based on their diet—some insects ___3___ wood while others chew foliage or slurp sap—researchers chose the most damaging species from each category. Then they analyzed the cost of these “poster pests” to five sectors: federal and local governments, households, residential property values and timber values. The non-native bugs cost local governments a whopping $1.7 billion every year, while also ___4___ $830 million dollars in residential property values. [Juliann E. Aukema et al., "Economic Impacts of Non-Native Forest Insects in the Continental United States," in PLOS One]
To keep the ravenous insects from causing more economic damage, one of the study’s authors, Juliann Aukema of U.C. Santa Barbara, urges stronger regulations on international trade. Bug-sniffing dogs might help. After all, they ___5___ keeping trees healthy.
—Sophie Bushwick
【視聽(tīng)版科學(xué)小組榮譽(yù)出品】
After dividing up the invaders into three categories based on their diet—some insects ___3___ wood while others chew foliage or slurp sap—researchers chose the most damaging species from each category. Then they analyzed the cost of these “poster pests” to five sectors: federal and local governments, households, residential property values and timber values. The non-native bugs cost local governments a whopping $1.7 billion every year, while also ___4___ $830 million dollars in residential property values. [Juliann E. Aukema et al., "Economic Impacts of Non-Native Forest Insects in the Continental United States," in PLOS One]
To keep the ravenous insects from causing more economic damage, one of the study’s authors, Juliann Aukema of U.C. Santa Barbara, urges stronger regulations on international trade. Bug-sniffing dogs might help. After all, they ___5___ keeping trees healthy.
—Sophie Bushwick
【視聽(tīng)版科學(xué)小組榮譽(yù)出品】
通過(guò)航運(yùn)入境美國(guó)的很多木箱中攜帶了大量饑餓的偷渡者：入侵物種——昆蟲。這些害蟲?？惺蓸淠?，但事實(shí)上，間接遭罪的是人們口袋里的錢……
研究人員按照昆蟲的食物將它們分成三類：一類鉆枝干，一類吃樹葉，一類吸樹汁，然后從這三類中挑出破壞性最強(qiáng)的物種，以此分析了這些大牌們?cè)谖鍌€(gè)不同環(huán)境（聯(lián)邦、各地政府、一般家庭、物業(yè)、木料）下的散財(cái)能力。這些蛀蟲每年能啃掉當(dāng)?shù)卣块T高達(dá)17億美元，物業(yè)受損額達(dá)830,000,000美元。
為避免這幫貪婪的蛀蟲造成更大的經(jīng)濟(jì)損失，本研究作者之一，加州大學(xué)圣芭芭拉分校的朱利安?澳柯瑪，呼吁對(duì)國(guó)際貿(mào)易加強(qiáng)約束。臭蟲狗就能幫上大忙，畢竟保護(hù)樹木也是有既得利益滴~~