小柯机器人

法国巴黎萨克雷大学Franck Courchamp、Christophe Diagne等研究人员合作发现，全球生物入侵的经济代价高昂且不断攀升。相关论文于2021年3月31日在线发表在《自然》杂志上。

研究人员发现，过去几十年（1970-2017年）报告的入侵总成本至少达到1.288万亿美元（按2017年美元度量），年平均损失为268亿美元。此外，研究人员估计，2017年的年均成本可能达到1,627亿美元。但这些成本仍然被低估了，没有任何放缓的迹象，并且每十年持续增长三倍。

研究人员发现，记录在案的成本分布广泛，并且在区域和分类规模上存在很大差距，损害成本要比管理支出高一个数量级。因此，记录生物入侵成本的研究方法需要进一步改进。尽管如此，这个调查结果认为，目前需要采取一致的管理行动和减轻外来入侵物种负担的国际政策协议。

据介绍，生物入侵是造成生物多样性大幅下降以及管理相关社会高额经济损失和金钱支出的原因。InvaCost数据库使全球生物入侵的货币成本管理能够更为可靠、全面、标准化和易于更新。

附：英文原文

Title: High and rising economic costs of biological invasions worldwide

Author: Christophe Diagne, Boris Leroy, Anne-Charlotte Vaissire, Rodolphe E. Gozlan, David Roiz, Ivan Jari, Jean-Michel Salles, Corey J. A. Bradshaw, Franck Courchamp

Issue&Volume: 2021-03-31

Abstract: Biological invasions are responsible for substantial biodiversity declines as well as high economic losses to society and monetary expenditures associated with the management of these invasions1,2. The InvaCost database has enabled the generation of a reliable, comprehensive, standardized and easily updatable synthesis of the monetary costs of biological invasions worldwide3. Here we found that the total reported costs of invasions reached a minimum of US$1.288 trillion (2017 US dollars) over the past few decades (1970–2017), with an annual mean cost of US$26.8 billion. Moreover, we estimate that the annual mean cost could reach US$162.7 billion in 2017. These costs remain strongly underestimated and do not show any sign of slowing down, exhibiting a consistent threefold increase per decade. We show that the documented costs are widely distributed and have strong gaps at regional and taxonomic scales, with damage costs being an order of magnitude higher than management expenditures. Research approaches that document the costs of biological invasions need to be further improved. Nonetheless, our findings call for the implementation of consistent management actions and international policy agreements that aim to reduce the burden of invasive alien species.

DOI: 10.1038/s41586-021-03405-6

Source: https://www.nature.com/articles/s41586-021-03405-6

Nature：《自然》，创刊于1869年。隶属于施普林格·自然出版集团，最新IF：69.504
官方网址：http://www.nature.com/
投稿链接：http://www.nature.com/authors/submit_manuscript.html