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首页> 外文期刊>Human Ecology >Assessing the effects of invasive alien species on rural livelihoods: Case examples and a framework from South Africa
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Assessing the effects of invasive alien species on rural livelihoods: Case examples and a framework from South Africa

机译：评估外来入侵物种对农村生计的影响：南非的案例和​​框架

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The detrimental impacts of invasive alien species (IAS) on ecosystem goods and services and local and regional economies are well documented. However, the use of IAS by rural communities is little understood, and rarely factored into IAS control programmes. Understanding the use of IAS by rural communities and factoring these into cost-benefit models is complex, depending upon a range of local-level attributes such as the time since invasion, abundance, and local-level costs and benefits. This paper reports on two case studies examining the role of IAS in rural livelihoods in the Eastern Cape, South Africa. In both cases, rural communities made widespread consumptive use of the IAS and generally would prefer higher densities, except in certain key localities. Several households traded in IAS products to generate supplementary income. We present a conceptual framework to guide interpretation of these and future case studies, considering attributes such as time since invasion, the competitiveness of the species, and the relative costs and benefits.
机译：充分记录了外来入侵物种（IAS）对生态系统产品和服务以及地方和区域经济的有害影响。但是，人们很少了解农村社区使用IAS的情况，很少将其纳入IAS控制计划中。了解农村社区对IAS的使用并将其纳入成本收益模型非常复杂，这取决于一系列本地级别的属性，例如入侵以来的时间，丰富程度以及本地级别的成本和收益。本文报告了两个案例研究，这些案例研究了IAS在南非东开普省农村生计中的作用。在这两种情况下，农村社区都广泛使用IAS进行消费，除某些关键地区外，农村社区通常更喜欢较高的密度。有几户人以IAS产品进行交易以产生补充收入。我们提出了一个概念框架，以指导这些和未来案例研究的解释，同时考虑诸如入侵以来的时间，物种的竞争力以及相对成本和收益之类的属性。

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