首页> 外文期刊>Agriculture, Ecosystems & Environment: An International Journal for Scientific Research on the Relationship of Agriculture and Food Production to the Biosphere >Grassy strips in their landscape context, their role as new habitat for biodiversity. (Special Issue: Landscape ecology and biodiversity in agricultural landscapes.)
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Grassy strips in their landscape context, their role as new habitat for biodiversity. (Special Issue: Landscape ecology and biodiversity in agricultural landscapes.)

机译:草地带在其景观环境中扮演着生物多样性新栖息地的角色。 (特刊:农业景观中的景观生态学和生物多样性。)

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In the context of rapid and severe biodiversity decline in agroecosystems, the European Union has introduced agri-environmental schemes. However, these schemes require evaluation to estimate their efficiency, for further consolidation and improvement. The establishment of grassy strips along watercourses represents a measure of cross-compliance introduced in France in 2005. In this study, we analyzed the benefits of these new landscape elements for biodiversity, by (i) exploring the plant community composition of grassy strips in relation to their landscape context, (ii) analyzing the faunal communities of three major functional groups (i.e., small mammals, syrphids, and carabid beetles) present in grassy strips of agroecosystems, (iii) comparing the faunal biodiversity to that observed in other habitats of agroecosystems, such as fields and hedgerows, and (iv) investigating the relationships between faunal community indices and grassy strip properties. The results of our study showed that the plant community of grassy strips is mainly influenced by semi-natural habitats that are present within a landscape context, i.e., at a scale >500 m. We found that grassy strips do not necessarily present areas of particularly high animal biodiversity compared to other habitats (i.e., fields and hedgerows). However, the properties of these strips (i.e., length, width and plant biodiversity) influence the structure of faunal communities. Two years after the establishment of grassy strips, their role as ecotones between previous field margins (mostly hedgerows in our study site) is illustrated through the response of the fauna. Hence, grassy strips, being more stable than cultivated fields, contribute to a new refuge within the agroecosystem landscape.
机译:在农业生态系统中生物多样性迅速而严重减少的情况下,欧洲联盟已提出了农业环境计划。但是,这些计划需要进行评估以评估其效率,以进行进一步的合并和改进。沿水道的草带的建立代表了法国于2005年引入的交叉遵从性措施。在这项研究中,我们通过(i)探索与之相关的草带的植物群落组成,分析了这些新景观要素对生物多样性的好处。 (ii)分析草地生态系统中存在的三个主要功能组(即小型哺乳动物,蓝鳍金龟和甲壳纲甲虫)的动物群落,(iii)将动物群落的生物多样性与在其他生态系统中观察到的进行比较农业生态系统,例如田地和树篱,以及(iv)调查动物群落指数与草条性质之间的关系。我们的研究结果表明,草带的植物群落主要受景观环境中(即规模大于500 m)的半自然生境的影响。我们发现,与其他栖息地(即田野和树篱)相比,草丛不一定代表着动物生物多样性特别高的地区。但是,这些带的性质(即长度,宽度和植物生物多样性)会影响动物群落的结构。草带建立两年后,通过动物区系的响应说明了它们作为先前田间边缘(主要是我们研究地点的树篱)之间的过渡带的作用。因此,草地带比耕地更稳定,为农业生态系统景观提供了新的庇护所。

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