Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa.
CSIRO Health & Biosecurity, Brisbane, GPO Box 2593, Brisbane 4001, Australia.
Curr Opin Insect Sci. 2020 Apr;38:1-5. doi: 10.1016/j.cois.2019.12.004. Epub 2020 Jan 29.
Invasive alien plants reduce ecosystem service delivery, resulting in environmental, economic and social costs. Here we review the returns on investment from biological control of alien plants that invade natural ecosystems. Quantifying the economic benefits of biological control requires estimates of the reductions in ecosystem goods and services arising from invasion. It also requires post-release monitoring to assess whether biological control can restore them, and conversion of these estimates to monetary values, which has seldom been done. Past studies, mainly from Australia and South Africa, indicate that biological control delivers positive and substantial returns on investment, with benefit:cost ratios ranging from 8:1 to over 3000:1. Recent studies are rare, but they confirm that successful biological control delivers attractive returns on investment, which increase over time as the value of avoided impacts accumulates.
入侵外来植物会降低生态系统服务的提供，从而导致环境、经济和社会成本。在这里，我们回顾了生物控制入侵自然生态系统的外来植物的投资回报。量化生物控制的经济效益需要估计入侵所导致的生态系统商品和服务的减少。它还需要释放后监测，以评估生物控制是否可以恢复它们，并将这些估计转换为货币价值，而这很少被做过。过去的研究主要来自澳大利亚和南非，表明生物控制带来了积极的、实质性的投资回报，效益：成本比从 8:1 到 3000:1 以上不等。最近的研究很少，但它们证实，成功的生物控制带来了有吸引力的投资回报，随着避免影响的价值积累，回报会随着时间的推移而增加。
