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首页> 外文期刊>Regional Environmental Change >Ecosystem engineer unleashed: Prosopis juliflora threatening ecosystem services?
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Ecosystem engineer unleashed: Prosopis juliflora threatening ecosystem services?

机译:生态系统工程师如虎添翼:Prosopis juliflora威胁着生态系统服务吗?

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摘要

The introduction of fast-growing plant species has been a strategy worldwide to combat problems arising from land degradation. Prosopis juliflora is an ecosystem engineer that was introduced to Ethiopia in the 1970s to address erosion problems but has subsequently become an important invader. This paper analyzes the spread of P. juliflora in Baadu, located in the middle Awash Basin of Ethiopia, qualitatively assesses its impacts on ecosystem services and identifies research needs and challenges for sustainable land management. The plant was introduced in 1983 around cotton farms in the case study region to provide erosion regulation. By the year 2013, P. juliflora had invaded 20,000 ha (40 % of wetlands). It partly invaded also the riverbanks and agricultural lands and is expanding into adjacent dryland areas. The negative impacts of this invasion are partially offset by provisioning of firewood and charcoal. However, the difficulties to control its rapid spread indicate that the threats it poses to ecosystem services, people's livelihoods and lifestyles may exceed its benefits. We argue for an integrated research approach that considers both the services and disservices, as well as the social discourse among different groups of actors to appropriately address this issue and identify options for sustainable action.
机译:引进快速生长的植物物种已成为世界范围内解决由土地退化引起的问题的战略。 Jusflora juliflora是一名生态系统工程师,于1970年代被引入埃塞俄比亚以解决侵蚀问题,但后来成为重要的入侵者。本文分析了位于埃塞俄比亚中部Awash盆地中部Baadu的Juliflora的传播,定性评估了其对生态系统服务的影响,并确定了可持续土地管理的研究需求和挑战。该植物于1983年在案例研究区域的棉花农场附近引入,以提供侵蚀控制。到2013年,水母已入侵20,000公顷(占湿地的40%)。它也部分地入侵了河岸和农田,并正在扩展到邻近的旱地地区。供应木柴和木炭可以部分抵消这种入侵的负面影响。但是,控制其迅速扩散的困难表明,它对生态系统服务,人们的生计和生活方式构成的威胁可能超出其益处。我们主张采用一种综合研究方法,同时考虑服务和损害,以及不同行为者群体之间的社会话语,以恰当地解决此问题并确定可持续行动的选择。

著录项

  • 来源
    《Regional Environmental Change》 |2015年第1期|155-167|共13页
  • 作者单位

    Professorship of Ecological Services, Department of Earth Sciences, BayCEER, University of Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany;

    Professorship of Disturbance Ecology, Department of Earth Sciences, BayCEER, University of Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany;

    Institute of Geography, University of Bonn, Meckenheimer Allee 166, 53115 Bonn, Germany;

    Institute of Human and Social Geography, Department of Earth Sciences, University of Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany;

    Institute of Political Geography, Department of Earth Sciences, University of Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany;

    Professorship of Ecological Services, Department of Earth Sciences, BayCEER, University of Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Invasive species; Land use; Remote sensing; Pastoralism; Livelihoods; Mapping;

    机译:入侵物种;土地利用;遥感;牧民主义生计;映射;

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