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首页> 外文期刊>Agricultural Systems >Heterogeneity and the trade-off between ecological and productive functions of agro-landscapes: a model of cattle-bird interactions in a grassland agroecosystem. (Special Issue: Designing sustainable agricultural production systems for a changing world: methods and applications.)
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Heterogeneity and the trade-off between ecological and productive functions of agro-landscapes: a model of cattle-bird interactions in a grassland agroecosystem. (Special Issue: Designing sustainable agricultural production systems for a changing world: methods and applications.)

机译：农业景观的异质性与生态功能与生产功能之间的折衷：草原农业生态系统中牛禽相互作用的模型。 （特刊：为不断变化的世界设计可持续农业生产系统：方法和应用。）

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There is empirical evidence that the proportions of different land uses or management regimes and their spatial arrangements can affect the long-term dynamics of bird species in agro-landscapes. The aim of our study was to assess the extent to which biodiversity can be enhanced by altering landscape structure without reducing agricultural production. We focused on a wader bird, the Northern Lapwing (Vanellus vanellus), in grassland landscapes in the Marais Poitevin area (France). For the purposes of our study, we developed a spatially explicit, dynamic model linking grass dynamics in grazed and mowed fields to lapwing population dynamics on a landscape scale. We then computed contrasting landscapes composed of fields with different management regimes that compensated for or complemented each other. The mechanism of compensation corresponded to the case where one management regime is favorable to a species, and the other is less so. The mechanism of complementation corresponded to the case where each of two management regimes is partially favorable to a species. Our results showed that the relative share of different management regimes was the main driver of Northern Lapwing dynamics in landscapes characterized by compensatory management regimes. In landscapes characterized by complementary management regimes, the spatial arrangement of the management regimes was also an important, albeit secondary, driver of bird population dynamics. Managing the spatial arrangement of management regimes is a way to improve the trade-off between ecological and agricultural performances on a landscape scale by improving ecological performances without altering the level of production. Landscape heterogeneity appears to be a promising way to reconcile the agricultural and ecological functions of agriculture, although it raises several issues concerning collective management.
机译：有经验证据表明，不同土地利用或管理制度的比例及其空间布局会影响农业景观中鸟类的长期动态。我们研究的目的是评估在不减少农业产量的情况下通过改变景​​观结构来增强生物多样性的程度。我们专注于在Marais Poitevin地区（法国）的草原景观中涉禽，即北田p（Vanellus vanellus）。为了我们的研究目的，我们开发了一个空间明确的动态模型，该模型将草场和割草场中的草丛动态与景观尺度上的田间种群动态联系起来。然后，我们计算了由具有不同补偿机制或互补机制的不同领域构成的对比景观。补偿机制对应于一种管理制度对某个物种有利，而另一种则不那么有利的情况。互补机制对应于两种管理制度中的每一种都部分有利于某个物种的情况。我们的结果表明，不同管理制度的相对份额是补偿性管理制度为特征的景观中北田La动态的主要驱动力。在以互补管理制度为特征的景观中，管理制度的空间安排也是鸟类种群动态的重要驱动因素，尽管是次要的。管理管理制度的空间安排是一种在不改变生产水平的情况下通过改善生态绩效来改善景观尺度上生态与农业绩效之间权衡的方法。景观异质性似乎是调和农业的农业和生态功能的一种有前途的方式，尽管它提出了有关集体管理的若干问题。

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